CN201893381U - Optical device - Google Patents
Optical device Download PDFInfo
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- CN201893381U CN201893381U CN 201020252888 CN201020252888U CN201893381U CN 201893381 U CN201893381 U CN 201893381U CN 201020252888 CN201020252888 CN 201020252888 CN 201020252888 U CN201020252888 U CN 201020252888U CN 201893381 U CN201893381 U CN 201893381U
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- optics
- porous membrane
- glass substrate
- optical module
- light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The utility model discloses an optical device, belonging to the photoelectric technical field. The optical device comprises a negative pole, an organic layer and a positive pole which are sequentially superimposed. The optical device is characterized in that the optical device also comprises a porous thin film, wherein the porous thin film is arranged on the upper surface or the lower surface of the optical device. With the adoption of the optical device, the light-emitting and the light-absorbing rates of the optical devices can be improved, such as an optical element and a solar cell and the like.
Description
Technical field
The utility model relates to field of photoelectric technology, especially a kind of optics and preparation method thereof.
Background technology
In field of photoelectric technology, light extraction efficiency is the problem that light-emitting diode (LED) and Organic Light Emitting Diode (OLED) all face, and for solar cell, the light source absorptivity also is an important indicator of its performance of decision.Be that led lighting device or solar cell generally all are made up of four parts, as described in Figure 1, be followed successively by negative electrode 1, organic layer 2, ITO (tin indium oxide) anode 3 and underlay substrate 4.Generally speaking, the refractive index of the underlay substrate of organic layer 2 and ito anode 3 ratio such as glass substrates is big, and the refractive index of underlay substrate is bigger than the refractive index of air.According to Snell laws of refraction, launch from the side owing to be subjected to the influence of organic layer and ito anode from the light that organic layer sends, concerning surperficial optics, the light that sends from the side of glass substrate, organic layer and ito anode is to the not contribution of device luminosity, and the actual light that sends to the outside from glass baseplate surface only accounts for 17.5% of the luminous total amount of OLED device self.If improve the luminosity and the efficient of device, just must reduce the light that sends from glass substrate, organic layer and ito anode side.
The utility model content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of and can reduce luminous loss, strengthen the optics of light extraction efficiency or absorptivity.
The technical solution adopted in the utility model is such: this optics comprises and has from top to bottom the optical module of negative electrode, organic layer and the anode of mutual superposition successively, also comprise the light that is arranged at described optics and penetrate one deck porous membrane on the path, wherein porous membrane is positioned on the upper surface or lower surface of described optical module, porous membrane is along the direction of pointing to optical module furtherly, and pore quantity reduces gradually or the aperture reduces gradually.This optics also comprises glass substrate, and wherein this glass substrate is between the upper surface or lower surface and porous membrane of optical module; Perhaps this porous membrane is between the upper surface or lower surface and glass substrate of optical module.This porous membrane is made of two kinds of materials or a kind of expanded material with different gasification temperatures at least, wherein can comprise at least a embedded photoluminescent material at least two kinds of materials or the expanded material.When having embedded photoluminescent material in the constituent material of porous membrane, set up the reflector that one deck is made with metal material, wherein porous membrane and optical module are in the same side in reflector.This optics also comprise be arranged on the first film between porous membrane and the glass substrate and be arranged on the optical module upper surface or lower surface and porous membrane between second film.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1, set up the equally distributed porous membrane of one deck hole in the utility model, most of light that its loose structure makes optics send can scatter out, rather than go out, thereby increased the light emission rate of light in the optics from glass substrate, organic layer and ito anode side-emitted;
2, be designed to pore quantity at the luminescent device porous membrane and be the trend distribution that increases step by step along light ejaculation path, be designed to pore quantity at the optics that absorbs light source and penetrate the trend distribution that the path is minimizing step by step, to reach the purpose of further enhancing light emission rate along light;
3, have under the situation of glass substrate at optics, optics has two kinds of structures, the one, make porous membrane between ito anode and glass substrate, at this moment not only can between glass substrate and porous membrane, set up one deck by the first film that constitutes such as oxide, be used for increasing adhesive force between the two, can also between ito anode and porous membrane, set up the second higher film of one deck transmitance, be used for playing the effect of buffering, reduce the roughness of porous membrane, thereby reduce the short circuit current of device, improve the optical property of device; The 2nd, make glass substrate between ito anode and porous membrane, at this moment between glass substrate and porous membrane, set up one deck by the first film that constitutes such as oxide, be used for increasing adhesive force between the two;
4, optics is removed glass substrate in the utility model, be substrate directly with porous membrane or foamed glass, so just can between ito anode and porous membrane, set up the second higher film of one deck transmitance, but also need not adopt glass substrate, with respect to above-mentioned two kinds of structure decrease processing step, reduced manufacturing cost.
Description of drawings
Fig. 1 is the schematic diagram of the structure of known in the prior art OLED device;
Fig. 2 is according to an embodiment of the present utility model, a kind of schematic diagram of structure of optics;
Fig. 3 is the schematic diagram of the another kind of structure of this optics;
Fig. 4 is the schematic diagram of another structure of this optics;
Fig. 5 is the schematic diagram of the hole regularity of distribution of porous membrane in the OLED luminescent device;
Fig. 6 is the schematic diagram of the hole regularity of distribution of porous membrane in the solar cell.
Mark among the figure: 1 is the Al negative electrode, and 2 is organic layer, and 3 is ito anode, and 4 is glass substrate, and 5 penetrate the path for light, and 6 is porous membrane, and 7 is the first film, and 8 is second film.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Optics is divided into two types, and a kind of is the optics that can launch bright dipping, and a kind of is to absorb the optics that light source converts thereof into other energy.In the utility model, be that example is described above-mentioned two kinds of optics with organic electroluminescent device OLED and solar cell respectively.Optics generally comprises and has from top to bottom the optical module of Al negative electrode, organic layer and the ito anode of mutual superposition successively, and such as the underlay substrate of glass substrate.
According to an embodiment of the present utility model, optics is compared with part of the prior art, has set up one deck porous membrane.This porous membrane can be made of two kinds of mixtures of material with different gasification temperatures at least, the composite material that the organic molecule that includes but not limited to conduct electricity, the polymer of conduction, oxide or above-mentioned material constitute.In this case, with metal oxide tungstic acid WoO
3With organic material TPD be that example is illustrated.Because TPD and WoO
3Gasification temperature compare lowly, wherein the molar concentration of TPD can be any one numerical value in 0.1%～99.9% scope.Step below optics adopts is prepared: at first prepare porous membrane, in the process that after with above-mentioned two kinds of material mixing, heats, both are heated to the gasification temperature of TPD, and (at the inner hole that forms of film, this moment, the constituent material of porous membrane can only comprise WoO until the pleated structure that forms nanometer scale on the surface of mixture to keep a period of time
3Perhaps WoO
3, two kinds of materials of TPD all comprise), then by making porous membrane, at last thereon with the optical module preparation including but not limited to the method for physical vapor precipitation, chemical gaseous phase deposition, spin coating, dip-coating, spraying, ink jet printing.In addition, the organic material TPD in the foregoing description can be by gasification temperature less than WoO
3One or more embedded photoluminescent materials substitute.Embedded photoluminescent material can not only generate the pleated structure that presents owing to porous on the mixture surface in gasification, and it can absorb the light that is sent by optics under the situation that embedded photoluminescent material is not gasified totally, and launch the longer light of wavelength, thereby change the color of optics, strengthen the brightness of optics.For example, added the embedded photoluminescent material of three kinds of colors that are respectively red, green and blue in mixture, these three kinds of color material just mix and can generate white light.At this moment, increasing one deck by the reflector of making such as the metal material of aluminium, make its same side at porous membrane and optical module, after the light part that is used for making optical module to send is absorbed by the embedded photoluminescent material of porous membrane, reflect back the light compositing with assembly, thereby form the light of different colours.But in this case, two electrodes (negative electrode and anode) in the both sides of optical module must have certain transparency (transparent or partially transparent fully).
This porous membrane can also be made of the expanded material such as foamed glass.(foamed glass also can directly be used as porous membrane) expanded material can produce bubble in the inner gasification of material in heating process makes it become loose structure.In addition, in expanded material, also can add at least a embedded photoluminescent material.
On structure, optics is penetrated the optical module that path 5 is mutual superposition from top to bottom successively (being Al negative electrode 1, organic layer 2 and ito anode 3), porous membrane 6 and glass substrate 4 along light, as shown in Figure 3.Because the surface ratio of porous membrane 6 is more coarse, so can all set up thin film on two contact-making surfaces of porous membrane 6.Between ito anode 3 (lower surface of optical module) and porous membrane 6, set up the higher film of one deck transmitance as second film, be used for playing the effect of buffering, reduce the roughness of porous membrane, thereby reduce the short circuit current of device, improve the photoelectric properties of device; The film of setting up one deck such as oxide between porous membrane 6 and glass substrate 4 is used for increasing adhesive force between the two as the first film, make both can in conjunction with tightr.Film between porous membrane 6 and the glass substrate 4 can be to be made of the higher a kind of material of gasification temperature in the constituent material of porous membrane, such as the oxide material WoO in the foregoing description
3
In addition, optics also can be designed to penetrate assembly Al negative electrode 1, organic layer 2, ito anode 3, glass substrate 4 and the porous membrane 6 that path 5 is mutual superposition from top to bottom successively along light, as shown in Figure 3.Similarly, because the surface ratio of porous membrane 6 is more coarse, and porous membrane 6 has only one side to contact with other assemblies (being glass substrate 4) in this kind structure, so can only set up above-mentioned one deck the first film on the basis of said structure between glass substrate 4 and porous membrane 6.
Moreover optics can also be designed to penetrate assembly Al negative electrode 1, organic layer 2, ito anode 3 and the porous membrane 6 that path 5 is mutual superposition from top to bottom successively along light, as shown in Figure 4.That is to say, removed glass substrate 4 on the basis of Fig. 2 and Fig. 3, is substrate with porous membrane 6 or foamed glass directly.In this case, can set up above-mentioned second layer film between ito anode 3 and porous membrane 6, wherein the thickness of this second layer film is the arbitrary numerical value between 1 nm～5 mm.
In sum, than previous device, the loose structure of porous membrane makes most of light of optics of transmitting illuminant to scatter out, rather than goes out from glass substrate, organic layer and ito anode side-emitted, so increased the light emission rate of light in the optics; Make that simultaneously the optics such as solar cell that absorbs light source can absorb more sunlight, increased its absorptivity.
Be directed to above-mentioned three kinds of structures, in the preparation process of porous membrane, for can be with such as lower speed and the WoO of material of the gasification temperature of TPD to increase gradually such as the luminescent device of OLED
3Codope and heating make hole in the porous membrane penetrate the path along the light of optics and are the trend that increases gradually and distribute, as shown in Figure 5; Similarly, also can use the same method for the optics that absorbs light source and to make porous membrane 6 such as solar cell, wherein the hole of porous membrane 6 is penetrated the trend distribution that the path is minimizing gradually along the light of optics, as shown in Figure 6, thus further strengthen light emission rate or absorptivity.
Similarly, porous membrane 6 and glass substrate 4 also can be provided with the upper surface of optical module in the drawings, and glass substrate 4 or porous membrane 6 are linked to each other with Al negative electrode 1 in the optical module.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. optics comprises and has from top to bottom the optical module of negative electrode, organic layer and the anode of mutual superposition successively, it is characterized in that also comprise one deck porous membrane, wherein said porous membrane is positioned on the upper surface or lower surface of described optical module.
2. optics as claimed in claim 1 is characterized in that, described porous film layer is the foamed glass layer.
3. optics as claimed in claim 1, it is characterized in that, also comprise the reflector made from metal material, wherein said porous membrane and described optical module are positioned at the same side in described reflector, and this moment, described anode and described negative electrode were transparent or partially transparent.
4. optics as claimed in claim 1 is characterized in that, along the pore quantity of the described porous membrane of direction that points to described optical module reduce gradually or and the aperture reduce gradually.
5. optics as claimed in claim 1 is characterized in that described optics also comprises glass substrate, and wherein said glass substrate is between the upper surface or lower surface and described porous membrane of described optical module.
6. optics as claimed in claim 1 is characterized in that described optics also comprises glass substrate, and wherein said porous membrane is between the upper surface or lower surface and described glass substrate of described optical module.
7. as claim 5 or 6 described optics, it is characterized in that described optics comprises the first film that is arranged between described porous membrane and the described glass substrate.
8. as claim 5 or 6 described optics, it is characterized in that described optics comprises the upper surface that is arranged on described optical module or second film between lower surface and the described porous membrane.
9. optics as claimed in claim 8 is characterized in that, the thickness of described second film is 1 nm～5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020252888 CN201893381U (en) | 2010-07-09 | 2010-07-09 | Optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020252888 CN201893381U (en) | 2010-07-09 | 2010-07-09 | Optical device |
Publications (1)
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|---|---|
| CN201893381U true CN201893381U (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020252888 Expired - Fee Related CN201893381U (en) | 2010-07-09 | 2010-07-09 | Optical device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016184059A1 (en) * | 2015-05-20 | 2016-11-24 | 京东方科技集团股份有限公司 | Organic light emitting diode substrate and organic light emitting diode device |
| CN108091770A (en) * | 2016-12-28 | 2018-05-29 | 南京第壹有机光电有限公司 | A kind of OLED device containing light extraction film adhesion promoting layer |
| CN109585685A (en) * | 2018-12-07 | 2019-04-05 | 纳晶科技股份有限公司 | Light takes out structure, its production method and luminescent device |
-
2010
- 2010-07-09 CN CN 201020252888 patent/CN201893381U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016184059A1 (en) * | 2015-05-20 | 2016-11-24 | 京东方科技集团股份有限公司 | Organic light emitting diode substrate and organic light emitting diode device |
| CN108091770A (en) * | 2016-12-28 | 2018-05-29 | 南京第壹有机光电有限公司 | A kind of OLED device containing light extraction film adhesion promoting layer |
| CN109585685A (en) * | 2018-12-07 | 2019-04-05 | 纳晶科技股份有限公司 | Light takes out structure, its production method and luminescent device |
| CN109585685B (en) * | 2018-12-07 | 2021-06-01 | 纳晶科技股份有限公司 | Light extraction structure, manufacturing method thereof and light emitting device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20140709 |
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| EXPY | Termination of patent right or utility model |