CN1527648A - Organic electroluminesence device - Google Patents
Organic electroluminesence device Download PDFInfo
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- CN1527648A CN1527648A CNA031201024A CN03120102A CN1527648A CN 1527648 A CN1527648 A CN 1527648A CN A031201024 A CNA031201024 A CN A031201024A CN 03120102 A CN03120102 A CN 03120102A CN 1527648 A CN1527648 A CN 1527648A
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Abstract
The present invention reveals organic electroluminescence device in the structure capable of preventing degradation of outer quantum efficiency of the organic electroluminescence assembly caused by surface plasma sub-resonance. The organic electroluminescent device has organic electroluminescence light leading out layer in nano structure of dielectric material or organic material and metal grains in nano size. The nano structure film layer may resonate with surface plasma in the assembly to form coupling, so that the light falling into the assembly may be taken out from the assembly to raise the light-emitting efficiency of the organic electroluminescence device effectively.
Description
Technical field
The present invention relates to an Organic Light-Emitting Device Ji Qi System making method, particularly about a kind of have solve the Organic Light-Emitting Device that reduces the structure of its external quantum efficiency of organic EL component in the organic EL component because of the surface plasma sub-resonance.
Background technology
(be called its principle of luminosity of Organic Light Emitting Diode (organic light emitting diode, OLED) display) again is to apply an extra electric field at organic molecule material (being divided into small molecule material (small molecule material) and polymeric material (polymer material) according to the big I of molecular weight) to make it produce luminescence phenomenon to organic electro-luminescent display (organic electroluminescent devices).Organic electro-luminescent display (organic electroluminescent devices) is self-luminosity (self emission) assembly because of it, but array type shows (dot matrix type display), have frivolous, high contrast, low consumpting power, high-resolution, reaction time short (fast response time), do not need characteristics such as backlight and wide viewing angle, and the large-scale billboards display when its panel size can be by 4mm miniscope to 100, be regarded as next from generation to generation flat panel display (flat panel display, FPD).Except the application of display, because organic EL component more can form the array type structure on the material of frivolous, deflection, make it more extensive on using, be fit to especially very much be applied to illumination.Generally estimate its luminous efficiency of organic EL component if can be promoted to more than the 100Lm/W, the organic electro-luminescent display device promptly has an opportunity to replace the general lighting light source, so the lifting of efficient is an instant important topic for the development of organic EL component.
The principle of organic electric-excitation luminescent is, inject electric hole by negative electrode injection electronics and anode, the potential difference of deriving because of extra electric field impels these electronics and electric hole to move in thin layer and meet, and produce again in conjunction with (recombination) phenomenon, this can be made it be in high-energy and non-stable excited state by stimulated luminescence layer molecule in conjunction with what emit again and again, then is returned to low-yield and stable ground state when energy disengages.The luminous efficiency of Organic Light-Emitting Device is decided by its internal quantum (internal quantumefficiency) and external quantum efficiency (external quantum efficiency).Internal quantum (internal quantum efficiency) is the internal efficiency (internal efficiency) that converts photoreduction process for the electricity in the physical phenomenon to, after being excited, organic molecule has singlet state (singlet) form that 1/4 excitation electron (excitingelectron) can form asymmetric spin configuration (asymmetric spin configuration), and give off energy in fluorescent (fluorescence) mode, but there is 3/4 excitation electron (exciting electron) can form the triplet (triplet) of symmetry spin configuration (symmetric spin configuration), and gives off energy with inactive phosphorescence (phosphorescence) hairdo.But confirmed that at present organo-metallic compound can give off energy the triplet (triplet) of excitation electron (exciting electron) hairdo with phosphorescence (phosphorescence), therefore, its internal quantum of Organic Light-Emitting Device (internal quantum efficiency) depends on its luminous excitation mechanism (excitationmechanism), just depends on to select to use fluorescent (fluorescence) luminescent material or phosphorescence (fluorescence) luminescent material.
Its definition of the external quantum efficiency of Organic Light-Emitting Device (external quantum efficiency) is the electric energy that is transfused in the assembly and with respect to the ratio of the luminous energy that is produced, just outside energy that produces of Organic Light-Emitting Device or number of photons.With typical organic EL component is example, and the light that organic layer sends not is all to pass to assembly outside, and organic EL component has 40% light to form the surface plasma sub-resonance and lose in component internal approximately.In addition, because the refractive index of organic material and glass substrate is high than air, therefore the light of part is easy to generate total reflection and is restricted in the assembly even that the assembly both sides scatter, and it is estimated has 80% light to be restricted in the assembly altogether approximately.So the external electrical efficient of general organic EL component is less than 20%.Therefore, if the light that can will sink in the assembly retrieves outside assembly, must greatly effectively promote the luminous efficiency of organic EL component.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of Organic Light-Emitting Device, have one by dielectric material and have the nanostructure organic electric-excitation luminescent light removing layer that metallic particles constituted (organic electroluminescent light recovery layer) of nano-scale, this nanostructure rete can form common coupling with the surface plasma sub-resonance in the assembly, the light that sinks in the assembly is retrieved (recover) outside assembly, to solve the problem that reduces its external quantum efficiency of organic EL component (external quantum efficiency) in the organic EL component because of surface plasma sub-resonance (surface plasmon resonance), increase the luminous efficiency of organic EL component.
For reaching the present invention's above-mentioned purpose, the invention provides a kind of organic electro-luminescent display structure, have one or above being constituted or by organic material and have the nanostructure organic electric-excitation luminescent light removing layer that metallic particles constituted (organic electroluminescent light recovety layer) of nano-scale of one deck by dielectric material and metallic particles with nano-scale.
Organic Light-Emitting Device with nanostructure organic electric-excitation luminescent light removing layer of the present invention comprises a substrate at least; One first electrode is disposed on the aforesaid substrate; One organic luminous layer is disposed on above-mentioned first electrode; One second electrode is disposed on the above-mentioned organic luminous layer, and above-mentioned organic luminous layer is between above-mentioned first electrode and above-mentioned second electrode; And the organic electric-excitation luminescent light removing layer of a nanostructure.And the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is configurable on aforesaid substrate, just between aforesaid substrate and above-mentioned first electrode; The organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is also configurable on above-mentioned first electrode, and the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is between above-mentioned first electrode and above-mentioned organic luminous layer; The organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is also configurable on above-mentioned organic luminous layer, and the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is between above-mentioned organic luminous layer and above-mentioned second electrode; And the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is also configurable on above-mentioned second electrode.
Organic Light-Emitting Device with nanostructure organic electric-excitation luminescent light removing layer of the present invention also can comprise the organic electric-excitation luminescent light removing layer of a substrate, one first electrode, an organic luminous layer, one second electrode, one first nanostructure and the organic electric-excitation luminescent light removing layer of one second nanostructure.The organic electric-excitation luminescent light removing layer of above-mentioned first nanostructure can be formed between aforesaid substrate and above-mentioned first electrode, also can be formed between above-mentioned first electrode and the organic luminous layer; And the organic electric-excitation luminescent light removing layer of above-mentioned second nanostructure can be formed between above-mentioned second electrode and the organic luminous layer or can be formed on above-mentioned second electrode.
Organic Light-Emitting Device with nanostructure organic electric-excitation luminescent light removing layer of the present invention can be one luminous by substrate-side, top is luminous (top emitting) (i.e. the second electrode side) or the luminous Organic Light-Emitting Device in a two sides.
The invention is characterized in Organic Light-Emitting Device, and this nanostructure organic electric-excitation luminescent light removing layer is to be made of dielectric material and the metallic particles that has the metallic particles or the organic material of nano-scale and have a nano-scale with nanostructure organic electric-excitation luminescent light removing layer.Wherein above-mentioned formation is how by the dielectric material or the organic material of the organic electric-excitation luminescent light removing layer of rice structure and to have nanometer sized metal particles be to form simultaneously in identical or different mode, and above-mentionedly has nanometer sized metal particles and mix (doping) in dielectric material or organic material with alloy (dopant) form.The dielectric material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure can be selected from the group that silicide, oxide, carbide, nitride and the composition thereof of insulation form, and can be silica (SiOx), aluminium oxide (AlOx), magnesium oxide (MgO), silicon nitride (SiNx), aluminium nitride (AlNx) or magnesium fluoride (MgFx).The organic material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is optional from micromolecule or macromolecule organic material.And the nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be selected from the group that gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof form, or formed by above-mentioned two or more element.
Substrate of the present invention can be printing opacity or lighttight glass or plastic base.The plastic base that the present invention is suitable for can be polyethylene terephthaldehyde ester (polyethyleneterephthalate), polyester (polyester), Merlon (polycarbonates), polyene ammonium (Polyimide), heat-resisting transparent resin (Arton), polyacrylate (polyacrylates) or polystyrene (polystyrene) etc.
Organic Light-Emitting Device of the present invention, wherein the material of above-mentioned organic luminous layer comprises micromolecule luminous organic material and macromolecule luminous organic material.Above-mentioned organic luminous layer can by the individual layer luminous organic material or the plural layer luminous organic material is superimposed constitutes.And above-mentioned organic luminous layer also can be fluorescent (fluorescence) luminescent material or phosphorescence (fluorescence) luminescent material.
First electrode of the present invention and second electrode can be transparency electrode, metal electrode or combination electrode.Wherein above-mentioned transparency electrode can be indium tin oxide (ITO), indium-zinc oxide (IZO), Zinc-aluminium (AZO) or zinc oxide (ZnO).Above-mentioned metal electrode can be selected from the group that is made up of lithium, magnesium, calcium, aluminium, silver, indium, gold, nickel and platinum, or the alloy of being made up of above-mentioned two or more element.Wherein above-mentioned combination electrode can be selected from the group that is made up of lithium, magnesium, calcium, aluminium, silver, indium, gold, nickel, platinum, indium tin oxide (ITO), indium-zinc oxide (IZO), Zinc-aluminium (AZO) and zinc oxide (ZnO) for to constitute by the plural layer electrode is superimposed.
According to Organic Light-Emitting Device of the present invention, by having the nanostructure organic electric-excitation luminescent light removing layer that metallic particles constituted (organic electroluminescent light recoverylayer) of nano-scale, form common coupling with the surface plasma sub-resonance in the assembly, the light that sinks in the assembly is retrieved (recover) outside assembly.And plating one deck nanostructure organic electric-excitation luminescent light removing layer (organic electroluminescent light recovery layer) gets final product in the structure that only needs in the making of original paper at assembly, by this simple manufacturing process, can effectively promote the luminous efficiency of organic EL component.
To state with other purpose, feature and advantage and can become apparent on the present invention in order to allow, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is the Organic Light-Emitting Device profile according to the embodiment 1 of Organic Light-Emitting Device of the present invention.
Fig. 2 is the Organic Light-Emitting Device profile according to the embodiment 2 of Organic Light-Emitting Device of the present invention.
Fig. 3 is the Organic Light-Emitting Device profile according to the embodiment 3 of Organic Light-Emitting Device of the present invention.
Fig. 4 is the Organic Light-Emitting Device profile according to the embodiment 4 of Organic Light-Emitting Device of the present invention.
Fig. 5 is the Organic Light-Emitting Device profile according to the embodiment 5 of Organic Light-Emitting Device of the present invention.
Wherein, description of reference numerals is as follows:
10,20,30,40,50～Organic Light-Emitting Device;
110,210,310,410,510～substrate;
120,220,320,420～nanostructure organic electric-excitation luminescent light removing layer;
121,221,321,421,521,561～dielectric material (organic material);
122,222,322,422,522,562～have a metallic particles of nano-scale;
130,230,330,430,530～the first electrodes;
140,240,340,440,540～organic luminous layer;
150,250,350,450,550～the second electrodes;
520～the first nanostructure organic electric-excitation luminescent light removing layers; And
560～the second nanostructure organic electric-excitation luminescent light removing layers.
Embodiment
Below please cooperate Organic Light-Emitting Device profile, to describe the present invention in detail with reference to the 1st figure, the 2nd figure, the 3rd figure, the 4th figure and the 5th figure.
Organic Light-Emitting Device of the present invention, at least comprise a substrate, one first electrode, one organic luminous layer, the organic electric-excitation luminescent light removing layer of one second electrode and a nanostructure, and the organic electric-excitation luminescent light removing layer of this nanostructure can be formed between aforesaid substrate and above-mentioned first electrode (shown in embodiment 1), can be formed at (shown in embodiment 2) between above-mentioned first electrode and the organic luminous layer, can be formed between above-mentioned second electrode and the organic luminous layer (shown in embodiment 3) or can be formed at (shown in embodiment 4) on above-mentioned second electrode.
Embodiment 1
At first, provide a substrate 110, please refer to the 1st figure.This substrate 110 can be transparency carrier or opaque substrate, is to be made of glass or plastic material (flexible substrate).On this substrate 110, form by dielectric (dielectric) material or organic material 121 and have the nanostructure organic electric-excitation luminescent light removing layer 120 that the metallic particles 122 of nano-scale (nano-scale) is constituted, and the dielectric material or the organic material 121 of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure and to have nanometer sized metal particles 122 be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles 122 and mix (doping) in dielectric material or organic material 121 with alloy (dopant) form.The dielectric material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be silica (SiOx), aluminium oxide (AlOx), magnesium oxide (MgO), silicon nitride (SiNx), aluminium nitride (AlNx) or magnesium fluoride (MgFx), and the production method that forms above-mentioned dielectric material can be sputter or electricity slurry reinforcement formula chemical vapour deposition (CVD) mode.The organic material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be micromolecule or macromolecule organic material, and the production method that forms above-mentioned organic material can be modes such as hot vapour deposition method, rotary coating, ink-jet or screen painting and forms.The nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure can be gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof, or is made up of above-mentioned two or more element.The method that forms above-mentioned metallic particles can be sputtering method, electron beam evaporation plating method, hot vapour deposition method, chemical gaseous phase coating method or modes such as rotary coating, ink-jet or screen painting and forms.The ratio that nanometer sized metal particles is doped in dielectric material or organic material can be 0.001% to 70% (percentage by weight) that accounts for this layer composition, and its ratio is to utilize different deposition rates (power) formation dielectric material and nanometer sized metal particles to allocate, or utilizes different mixing proportion to form organic material and nanometer sized metal particles.Then, on nanostructure organic electric-excitation luminescent light removing layer 120, form first electrode 130, make organic electric-excitation luminescent light removing layer 120 between first electrode 130 and substrate 110.This first electrode 130 can be transparency electrode, metal electrode or combination electrode.Form organic luminous layer 140 on first electrode 130, this organic luminous layer 140 can be micromolecule or macromolecule luminous organic material, if the micromolecule luminous organic material can utilize the vacuum evaporation mode to be formed with the OLED material layer; If the macromolecule luminous organic material then can use modes such as rotary coating, ink-jet or screen painting to be formed with the OLED material layer.At last, form second electrode 150 on organic luminous layer 140, this second electrode 150 can be transparency electrode, metal electrode or combination electrode.The method of above-mentioned formation first electrode 130 and second electrode 150 can be sputtering method, electron beam evaporation plating method, hot vapour deposition method, chemical gaseous phase coating method or spray pyrolysis method and forms.The formed Organic Light-Emitting Device 10 of embodiment can be one luminous by substrate-side, top is luminous (top emitting) (i.e. the second electrode side) or the luminous Organic Light-Emitting Device in a two sides thus.
Embodiment 2
At first, provide a substrate 210, please refer to the 2nd figure.This substrate 210 can be transparency carrier or opaque substrate, is to be made of glass or plastic material (deflection substrate).Form first electrode 230 on this substrate 210, this first electrode 230 can be transparency electrode, metal electrode or combination electrode.Then, form one by dielectric (dielectric) material or organic material 221 and have the nanostructure organic electric-excitation luminescent light removing layer 220 that the metallic particles 222 of nano-scale (nano-scale) is constituted at this first electrode 230, and the dielectric material or the organic material 221 of the organic electric-excitation luminescent light removing layer 220 of above-mentioned formation nanostructure and to have nanometer sized metal particles 222 be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles 222 and mix (doping) in dielectric material 221 with alloy (dopant) form.The dielectric material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be silica (SiOx), aluminium oxide (AlOx), magnesium oxide (MgO), silicon nitride (SiNx), aluminium nitride (AlNx) or magnesium fluoride (MgFx).The organic material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be micromolecule or macromolecule organic material, and the production method that forms above-mentioned organic material can be modes such as hot vapour deposition method, rotary coating, ink-jet or screen painting and forms.The nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure can be gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof, or is made up of above-mentioned two or more element.The ratio that nanometer sized metal particles is doped in dielectric material or organic material can be 0.001% to 70% (percentage by weight) that accounts for this layer composition, and its ratio is to utilize different deposition rates (power) formation dielectric material and nanometer sized metal particles to allocate.Then, on nanostructure organic electric-excitation luminescent light removing layer 220, form organic luminous layer 240, make organic electric-excitation luminescent light removing layer 220 between the organic luminous layer 240 and first electrode 230.This organic luminous layer 240 can be micromolecule or macromolecule luminous organic material.At last, form second electrode 250 on organic luminous layer 240, this second electrode 250 can be transparency electrode, metal electrode or combination electrode.The formed Organic Light-Emitting Device 20 of embodiment can be one luminous by substrate-side, top is luminous (top emitting) (promptly luminous by the second electrode side) or the luminous Organic Light-Emitting Device in a two sides thus.Its mode that forms each layer is shown in embodiment 1.
Embodiment 3
At first, provide a substrate 310, please refer to the 3rd figure.This substrate 310 can be transparency carrier or opaque substrate, is to be made of glass or plastic material (deflection substrate).Form first electrode 330 on this substrate 310, this first electrode 330 can be transparency electrode, metal electrode or combination electrode.Then, form organic luminous layer 340 at this first electrode 330, this organic luminous layer 340 can be micromolecule or macromolecule luminous organic material.Then on organic luminous layer 340, form one by dielectric (dielectric) material or organic material 321 and have the nanostructure organic electric-excitation luminescent light removing layer 320 that the metallic particles 322 of nano-scale (nano-scale) is constituted, and the dielectric material 321 of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure and to have nanometer sized metal particles 322 be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles 322 and mix (doping) in dielectric material or organic material 321 with alloy (dopant) form.The dielectric material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be silica (SiOx), aluminium oxide (AlOx), magnesium oxide (MgO), silicon nitride (SiNx), aluminium nitride (AlNx) or magnesium fluoride (MgFx).The organic material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be micromolecule or macromolecule organic material, and the production method that forms above-mentioned organic material can be modes such as hot vapour deposition method, rotary coating, ink-jet or screen painting and forms.The nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure can be gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof, or is made up of above-mentioned two or more element.The ratio that nanometer sized metal particles is doped in dielectric material or organic material can be 0.001% to 70% (percentage by weight) that accounts for this layer composition, and its ratio is to utilize different deposition rates (power) to form dielectric material or organic material and nanometer sized metal particles to allocate.Then, on nanostructure organic electric-excitation luminescent light removing layer 320, form second electrode 350, make organic electric-excitation luminescent light removing layer 320 between the organic luminous layer 340 and second electrode 350.This second electrode 350 can be transparency electrode, metal electrode or combination electrode.The formed Organic Light-Emitting Device 30 of embodiment can be one luminous by substrate-side, top is luminous (top emitting) (promptly luminous by the second electrode side) or the luminous Organic Light-Emitting Device in a two sides thus.Its mode that forms each layer is shown in embodiment 1.
Embodiment 4
At first, provide a substrate 410, please refer to the 4th figure.This substrate 410 can be transparency carrier or opaque substrate, is to be made of glass or plastic material (deflection substrate).Form first electrode 430 on this substrate 410, this first electrode 430 can be transparency electrode, metal electrode or combination electrode.Then, form organic luminous layer 440 on this first electrode 430, this organic luminous layer 440 can be micromolecule or macromolecule luminous organic material.Then form second electrode 450 on organic luminous layer 440, this second electrode 450 can be transparency electrode, metal electrode or combination electrode.At last, on second electrode 450, form one by dielectric material or organic material 421 and have the nanostructure organic electric-excitation luminescent light removing layer 420 that the metallic particles 422 of nano-scale (nano-scale) is constituted, and the dielectric material or the organic material 421 of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure and to have nanometer sized metal particles 422 be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles 422 and mix (doping) in dielectric material or organic material 421 with alloy (dopant) form.The dielectric material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be silica (SiOx), aluminium oxide (AlOx), magnesium oxide (MgO), silicon nitride (SiNx), aluminium nitride (AlNx) or magnesium fluoride (MgFx).The organic material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be micromolecule or macromolecule organic material, and the production method that forms above-mentioned organic material can be modes such as hot vapour deposition method, rotary coating, ink-jet or screen painting and forms.The nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure can be gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof, or is made up of above-mentioned two or more element.The ratio that nanometer sized metal particles is doped in dielectric material or organic material can be 0.001% to 70% (percentage by weight) that accounts for this layer composition, and its ratio is to utilize different deposition rates (power) to form dielectric material or organic material and nanometer sized metal particles to allocate.The formed Organic Light-Emitting Device 40 of embodiment can be one luminous by substrate-side, top is luminous (top emitting) (promptly luminous by the second electrode side) or the luminous Organic Light-Emitting Device in a two sides thus.Its mode that forms each layer is shown in embodiment 1.
Organic Light-Emitting Device of the present invention also can comprise the organic electric-excitation luminescent light removing layer of a substrate, one first electrode, an organic luminous layer, one second electrode, one first nanostructure and the organic electric-excitation luminescent light removing layer of one second nanostructure.The organic electric-excitation luminescent light removing layer of above-mentioned first nanostructure can be formed between aforesaid substrate and above-mentioned first electrode, also can be formed between above-mentioned first electrode and the organic luminous layer; And the organic electric-excitation luminescent light removing layer of above-mentioned second nanostructure can be formed between above-mentioned second electrode and the organic luminous layer or can be formed on above-mentioned second electrode.
Embodiment 5
Please refer to the 5th figure, this embodiment is an Organic Light-Emitting Device, and it has the organic electric-excitation luminescent light removing layer of one first nanostructure and the organic electric-excitation luminescent light removing layer of one second nanostructure.At first, provide a substrate 510.This substrate 510 can be transparency carrier or opaque substrate, is to be made of glass or plastic material (deflection substrate).On this substrate 510, form one by dielectric material or organic material 521 and have the first nanostructure organic electric-excitation luminescent light removing layer 520 that the metallic particles 522 of nano-scale (nano-scale) is constituted, and the dielectric material or the organic material 521 of the organic electric-excitation luminescent light removing layer of above-mentioned formation first nanostructure and to have nanometer sized metal particles 522 be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles 522 and mix (doping) in dielectric material or organic material 521 with alloy (dopant) form.Then, form first electrode 530 on the first nanostructure organic electric-excitation luminescent light removing layer 520, this first electrode 530 can be transparency electrode, metal electrode or combination electrode.Then, form organic luminous layer 540 on this first electrode 530, this organic luminous layer 540 can be micromolecule or macromolecule luminous organic material.Then form second electrode 550 on organic luminous layer 540, this second electrode 550 can be transparency electrode, metal electrode or combination electrode.At last, on second electrode 550, form one by dielectric material or organic material 561 and have the second nanostructure organic electric-excitation luminescent light removing layer 560 that the metallic particles 562 of nano-scale (nano-scale) is constituted, and the dielectric material or the organic material 561 of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure and to have nanometer sized metal particles 562 be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles 562 and mix (doping) in dielectric material or organic material 561 with alloy (dopant) form.The dielectric material of the organic electric-excitation luminescent light removing layer of above-mentioned first and second nanostructure of formation is to be silica (SiOx), aluminium oxide (AlOx), magnesium oxide (MgO), silicon nitride (SiNx), aluminium nitride (AlNx) or magnesium fluoride (MgFx).The organic material of the organic electric-excitation luminescent light removing layer of above-mentioned formation nanostructure is to be micromolecule or macromolecule organic material, and the production method that forms above-mentioned organic material can be modes such as hot vapour deposition method, rotary coating, ink-jet or screen painting and forms.The nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of above-mentioned first and second nanostructure of formation can be gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof, or is made up of above-mentioned two or more element.The ratio that nanometer sized metal particles is doped in dielectric material or organic material can be 0.001% to 70% (percentage by weight) that accounts for this layer composition, and its ratio is to utilize different deposition rates (power) to form dielectric material or organic material and nanometer sized metal particles to allocate.The formed Organic Light-Emitting Device 50 of embodiment can be one luminous by substrate-side, top is luminous (topemitting) (promptly luminous by the second electrode side) or the luminous Organic Light-Emitting Device in a two sides thus.Its mode that forms each layer is shown in embodiment 1.
Though the present invention with preferred embodiment openly as above; so it is not in order to limit scope of the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when can making various changes and modification, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (33)
1. Organic Light-Emitting Device comprises at least:
One substrate;
One first electrode is disposed on the aforesaid substrate;
One organic luminous layer is disposed on above-mentioned first electrode;
One second electrode is disposed on the above-mentioned organic luminous layer, and above-mentioned organic luminous layer is positioned at above-mentioned
Between one electrode and above-mentioned second electrode; And
The organic electric-excitation luminescent light removing layer of one nanostructure.
2. Organic Light-Emitting Device as claimed in claim 1, wherein the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is disposed on the aforesaid substrate, and the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is between aforesaid substrate and above-mentioned first electrode.
3. Organic Light-Emitting Device as claimed in claim 1, wherein the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is disposed on above-mentioned first electrode, and the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is between above-mentioned first electrode and above-mentioned organic luminous layer.
4. Organic Light-Emitting Device as claimed in claim 1, wherein the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is disposed on the above-mentioned organic luminous layer, and the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is between above-mentioned organic luminous layer and above-mentioned second electrode.
5. Organic Light-Emitting Device as claimed in claim 1, wherein the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is disposed on above-mentioned second electrode.
6. Organic Light-Emitting Device as claimed in claim 1, wherein above-mentioned organic luminous layer is made of the individual layer luminous organic material.
7. Organic Light-Emitting Device as claimed in claim 1, wherein above-mentioned organic luminous layer constitutes by the plural layer luminous organic material is superimposed.
8. Organic Light-Emitting Device as claimed in claim 1, wherein above-mentioned organic luminous layer is a fluorescent) luminescent material or phosphorescent light-emitting materials.
9. Organic Light-Emitting Device as claimed in claim 1, wherein the material of above-mentioned organic luminous layer comprises the micromolecule luminous organic material.
10. Organic Light-Emitting Device as claimed in claim 9, wherein above-mentioned micromolecule luminous organic material utilizes the vacuum evaporation mode to form organic luminous layer.
11. Organic Light-Emitting Device as claimed in claim 1, wherein the material of above-mentioned organic luminous layer comprises the macromolecule luminous organic material.
12. Organic Light-Emitting Device as claimed in claim 11, the wherein above-mentioned macromolecule luminous organic material that comprises is to utilize rotary coating, ink-jet or screen painting mode to form organic luminous layer.
13. Organic Light-Emitting Device as claimed in claim 1, wherein aforesaid substrate is printing opacity or lighttight glass or plastic base.
14. Organic Light-Emitting Device as claimed in claim 13, wherein above-mentioned plastic base are polyethylene terephthaldehyde ester polyester, Merlon, polyene ammonium, heat-resisting transparent resin, polyacrylate or polystyrene.
15. Organic Light-Emitting Device as claimed in claim 1, wherein above-mentioned first electrode is transparency electrode, metal electrode or combination electrode.
16. Organic Light-Emitting Device as claimed in claim 1, wherein above-mentioned second electrode is transparency electrode, metal electrode or combination electrode.
17. as claim 15 or 16 described Organic Light-Emitting Device, wherein above-mentioned transparency electrode is indium tin oxide ITO, indium-zinc oxide IZO, Zinc-aluminium AZO or zinc oxide ZnO.
18. as claim 15 or 16 described Organic Light-Emitting Device, wherein above-mentioned metal electrode is selected from the group that is made up of lithium, magnesium, calcium, aluminium, silver, indium, gold, nickel and platinum, or the alloy of being made up of above-mentioned two or more element.
19. as claim 15 or 16 described Organic Light-Emitting Device, wherein above-mentioned combination electrode constitutes by the plural layer electrode is superimposed, is selected from the group that is made up of lithium, magnesium, calcium, aluminium, silver, indium, gold, nickel, platinum, indium tin oxide ITO, indium-zinc oxide IZO, Zinc-aluminium AZO and zinc oxide ZnO.
20. Organic Light-Emitting Device as claimed in claim 1, wherein the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is one to have the thin layer of nanostructure, and the thin layer of this nanostructure is made of dielectric material and metallic particles with nano-scale.
21. Organic Light-Emitting Device as claimed in claim 20, the dielectric material of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure are selected from the group that silicide, oxide, carbide, nitride and the composition thereof of insulation form.
22. Organic Light-Emitting Device as claimed in claim 20, the dielectric material of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure is silicon oxide sio x, aluminium oxide Al Ox, magnesium oxide MgO, silicon nitride SiNx, aluminium nitride AlNx or magnesium fluoride MgFx.
23. Organic Light-Emitting Device as claimed in claim 20, the nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure is selected from the group that gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof form, or is made up of above-mentioned two or more element.
24. Organic Light-Emitting Device as claimed in claim 20, the dielectric material of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure and to have nanometer sized metal particles be to form simultaneously in identical or different mode, and above-mentionedly have nanometer sized metal particles and mix (doping) in dielectric material with alloy (dopant) form.
25. Organic Light-Emitting Device as claimed in claim 1, wherein the organic electric-excitation luminescent light removing layer of above-mentioned nanostructure is one to have the thin layer of nanostructure, and the thin layer of this nanostructure is made of organic material and metallic particles with nano-scale.
26. Organic Light-Emitting Device as claimed in claim 25, the organic material of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure are selected from the group that micromolecule or macromolecule organic material form.
27. Organic Light-Emitting Device as claimed in claim 25, the nanometer sized metal particles that has of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure is selected from the group that gold, silver, germanium, selenium, tin, antimony, tellurium, gallium and composition thereof form, or is made up of above-mentioned two or more element.
28. Organic Light-Emitting Device as claimed in claim 25, the organic material of the organic electric-excitation luminescent light removing layer of wherein above-mentioned formation nanostructure and have nanometer sized metal particles and form simultaneously in identical or different mode, and above-mentioned have nanometer sized metal particles with the alloy form be doped in organic material in.
29. an Organic Light-Emitting Device comprises at least:
One substrate;
One first electrode is disposed on the aforesaid substrate;
One organic luminous layer is disposed on above-mentioned first electrode;
One second electrode is disposed on the above-mentioned organic luminous layer, and above-mentioned organic luminous layer is between above-mentioned first electrode and above-mentioned second electrode;
The first organic electric-excitation luminescent light removing layer of one nanostructure; And
The second organic electric-excitation luminescent light removing layer of one nanostructure.
30. Organic Light-Emitting Device as claimed in claim 29, the organic electric-excitation luminescent light removing layer of wherein above-mentioned first nanostructure is disposed on the aforesaid substrate, and the organic electric-excitation luminescent light removing layer of above-mentioned first nanostructure is between aforesaid substrate and above-mentioned first electrode.
31. Organic Light-Emitting Device as claimed in claim 29, the organic electric-excitation luminescent light removing layer of wherein above-mentioned first nanostructure is disposed on above-mentioned first electrode, and the organic electric-excitation luminescent light removing layer of above-mentioned first nanostructure is between above-mentioned first electrode and above-mentioned organic luminous layer.
32. Organic Light-Emitting Device as claimed in claim 29, the organic electric-excitation luminescent light removing layer of wherein above-mentioned second nanostructure is disposed on the above-mentioned organic luminous layer, and the organic electric-excitation luminescent light removing layer of above-mentioned second nanostructure is between above-mentioned organic luminous layer and above-mentioned second electrode.
33. Organic Light-Emitting Device as claimed in claim 29, the organic electric-excitation luminescent light removing layer of wherein above-mentioned second nanostructure is disposed on above-mentioned second electrode.
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| CNA031201024A CN1527648A (en) | 2003-03-07 | 2003-03-07 | Organic electroluminesence device |
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| CNA031201024A CN1527648A (en) | 2003-03-07 | 2003-03-07 | Organic electroluminesence device |
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