A kind of method preparing transparency conductive electrode
Technical field
The present invention relates to transparency conductive electrode field, more particularly, it relates to a kind of method preparing transparency conductive electrode.
Background technology
At present, the material of transparency electrode mainly includes transparent conductive oxide film, CNT, Graphene, conducting polymer, metal grill, metal nanometer line etc..Ito transparent electrode has occupied the most market share by its high grade of transparency and high conductivity.But ITO electrode needs the method using vacuum vapor deposition to prepare, and contains rare element indium, thus relatively costly, and ITO enbrittles, it is impossible to use in flexible device.Thus people begin look for other transparent electrode materials, metal nanometer line is due to its relatively low cost, higher performance, gain great popularity to the adaptability of flexible device.Although thicker metal film is opaque, if but carried out waffle-like pattern and make metal grill, then can want, with metal nanometer line, the transparency conductive electrode that matches in excellence or beauty by becoming.And conductive metal material coordinates Graphene, CNT, conducting polymer, metal oxide semiconductor material can obtain the better suitability.
In the practical application in the fields such as liquid crystal display, OLED (organic electroluminescent), touch screen, solaode, it is often necessary to the transparency conductive electrode of patterning completes various function.For existing transparent conductive material, prior art has multiple patterns method, the method such as including laser ablation, the chemical etching method of gold-tinted technique, the chemical etching of silk-screen etching paste, ink jet printing etching solution.But existing method all can cause that etching region and non-etched district exist bigger optical property difference, and have and environment has bigger pollution, and preparation flow is complicated, the shortcoming that preparation cost is higher.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of method preparing transparency conductive electrode, the present invention is reacted with conductive layer by reacting gas, make Conductive layer portions conductive material be converted into electrically non-conductive material, thus obtain patterning electrode, and conductive region and non-conducting areas poor optical properties heteropole low, realize the shadow etching that disappears completely, effect is notable in actual applications, and preparation flow is simple, and preparation cost is low.
For solving the problems referred to above, the technical solution adopted in the present invention is as follows:
A kind of method preparing transparency conductive electrode, including:
1) transparent conductive material is prepared;
2) conversion zone is formed: on the conductive layer of transparent conductive material, form conversion zone;
3) import reacting gas to react: import reacting gas to conversion zone, make the conductive layer in conversion zone react with reacting gas;
4) obtain transparency conductive electrode: after reaction terminates, pass into protective gas to conversion zone and remove the residual reaction gas in conversion zone, obtain transparency conductive electrode.
Preferably, described transparent base is glass, macromolecule transparent membrane or macromolecular sheet material.
Preferably, described conductive layer is one or more in 1-dimention nano conductive material, two-dimensional nano conductive material, metal grill transparent conductive material, electrically conducting transparent macromolecular material and burning system transparent conductive material.
Preferably, described 1-dimention nano conductive material is metal nanometer line transparent conductive material, carbon nano tube transparent conductive material, nano metal band transparent conductive material or nano metal rod transparent conductive material.
Preferably, in described metal nanometer line transparent conductive material, metal nanometer line is any one elemental metals nano wire or several alloying metal nano wire in silver, nickel, copper, palladium, platinum, gold, cobalt and ferrum;In described metal grill transparent conductive material, metal grill is any one elemental metals grid or several alloying metal grid in silver, nickel, copper, aluminum, palladium, platinum, gold, cobalt and ferrum.
Preferably, described two-dimensional nano conductive material is nanometer metallic film transparent conductive material or carbon system transparent conductive material.
Preferably, described reacting gas is one or more in ozone, steam, hydrogen peroxide, organic amine, ammonia, halogen gas and compound, carbon dioxide, organic acid, nitric acid, hydrochloric acid, sulfur vapor and sulfide steam.
Preferably, described protective gas be in nitrogen, air and noble gas one or more.
Further,
Described step 2) 3) 4) adopt transparency conductive electrode processing unit (plant) to carry out, described transparency conductive electrode processing unit (plant) includes template body, absorption platform and for template body being pressed on the compressing member on absorption platform, described template body is plate, template body is arranged on absorption platform, template body is provided with sealing ring, contact and passage, described sealing ring and contact are fixed on the template body side near transparent conductive material, described contact is positioned at sealing ring, noncontact chamber is formed between described sealing ring and contact, described passage is arranged on template body noncontact chamber place, passage is two or more;
Described step 1) particularly as follows: form conductive layer over the transparent substrate by spin coating, spraying, printing, self assembly, vapour deposition, liquid deposition or electroplating technology;
Described step 2) particularly as follows: transparent conductive material is placed on absorption platform, sealing ring and contact on template body support on the conductive layer of transparent conductive material and compress, and noncontact chamber forms conversion zone on transparent conductive material;
Described step 3) particularly as follows: import reacting gas by the passage on template body to conversion zone, the conductive layer in conversion zone and reacting gas react;
Described step 4) particularly as follows: pass into protective gas by the passage on template body to conversion zone to remove the residual reaction gas in conversion zone, remove template body, obtain transparency conductive electrode.
Further,
Described step 2) 3) 4) adopt transparency conductive electrode processing unit (plant) to carry out, described transparency conductive electrode processing unit (plant) includes template body, absorption platform, for template body being pressed on compressing member on absorption platform and flexible protective film, described template body is plate, template body is arranged on absorption platform, template body is provided with sealing ring, contact and passage, described sealing ring and contact are fixed on the template body side near transparent conductive material, described contact and transparent conductive material contact position indent have pressure chamber, described contact is positioned at sealing ring, noncontact chamber is formed between described sealing ring and contact, described passage is arranged on template body noncontact chamber place, described passage is two or more;The noncontact chamber place of described absorption platform corresponding templates body is provided with gas port, and described flexible protective film is arranged between absorption platform and template body;
Described step 1) particularly as follows: form conductive layer over the transparent substrate by spin coating, spraying, printing, self assembly, vapour deposition, liquid deposition or electroplating technology, and open hole at transparent conductive material correspondence absorption platform gas port place;
Described step 2) particularly as follows: transparent conductive material is placed on absorption platform; transparent conductive material covers flexible protective film; sealing ring and contact on template body support on flexible protective film and compress, and flexible protective film and transparent conductive material form conversion zone at noncontact chamber place;
Described step 3) particularly as follows: import reacting gas by gas port to conversion zone, make the flexible protective film bubbling in conversion zone form reaction compartment, the conductive layer in reaction compartment and reacting gas react;
Described step 4) particularly as follows: pass into protective gas by gas port to reaction compartment to remove the residual reaction gas in reaction compartment, remove template body and flexible protective film, obtain transparency conductive electrode.
Compared to existing technology, the beneficial effects of the present invention is: the present invention is reacted with conductive layer by reacting gas, Conductive layer portions conductive material is made to be converted into electrically non-conductive material, thus obtaining the electrode of patterning, and conductive region and non-conducting areas poor optical properties heteropole are low, realizing the shadow etching that disappears completely, effect is notable in actual applications.
Accompanying drawing explanation
Fig. 1 is the flow chart that the present invention prepares the method for transparency conductive electrode;
Fig. 2 is that in embodiment 1, transparency conductive electrode processing unit (plant) uses state diagram;
Fig. 3 is transparency conductive electrode processing unit (plant) structural representation in the present invention;
Fig. 4 is A-A profile in Fig. 3;
Fig. 5 is that in embodiment 2, transparency conductive electrode processing unit (plant) uses state diagram;
Fig. 6 is that in embodiment 3, transparency conductive electrode processing unit (plant) uses state diagram;
Fig. 7 is that in embodiment 4, transparency conductive electrode processing unit (plant) uses state diagram;
Wherein, 1 be template body, 11 be sealing ring, 12 be contact, 121 be pressure chamber, 13 be passage, 2 be absorption platform, 21 be gas port, 3 be compressing member, 4 be flexible protective film, 5 for transparent conductive material.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As it is shown in figure 1, the method preparing transparency conductive electrode in the present invention, including step:
1) transparent conductive material is prepared;
2) conversion zone is formed: on the conductive layer of transparent conductive material, form conversion zone;
3) import reacting gas to react: import reacting gas to conversion zone, make the conductive layer in conversion zone react with reacting gas;
4) obtain transparency conductive electrode: after reaction terminates, pass into protective gas to conversion zone and remove the residual reaction gas in conversion zone, obtain transparency conductive electrode.
The present invention is prepared the method for transparency conductive electrode depend on transparency conductive electrode processing unit (plant) and be achieved, first below the embodiment of transparency conductive electrode processing unit (plant) structure is described.
Embodiment 1
As in Figure 2-4, transparency conductive electrode processing unit (plant) includes template body 1, absorption platform 2 and for template body 1 being pressed on the compressing member 3 on absorption platform 2, template body 1 is plate, template body 1 is arranged on absorption platform 2, template body 1 is provided with sealing ring 11, contact 12 and passage 13, sealing ring 11 and contact 12 are fixed on the template body 1 side near transparent conductive material, contact 12 is positioned at sealing ring 11, noncontact chamber is formed between sealing ring 11 and contact 12, passage 13 is arranged on template body 1 noncontact chamber place, passage 13 is two or more.
During use; transparent conductive material 5 is adsorbed on absorption platform 2; template body 1 is fully contacted with transparent conductive material 5 under compressing member 3 acts on; sealing ring 11 and contact 12 fully support on transparent conductive material 5; noncontact chamber forms conversion zone on transparent conductive material 5 surface; reacting gas is imported to conversion zone by passage 13; reacting gas and conductive layer react after terminating; protective gas is passed into conversion zone again by passage 13; remove the residual reaction gas in conversion zone; remove template body 1, obtain transparency conductive electrode.
Absorption platform 2 can realize the fully fixing of transparent conductive material 5; compressing member 3 acts on template body 1; realize the template body 1 compression on transparent conductive material 5; guarantee template body 1 is fully contacted with transparent conductive material 5; noncontact chamber forms conversion zone on transparent conductive material 5 surface; offer space is reacted, it is ensured that reaction effectively protects the territory, non-reaction zone of conductive layer while being normally carried out for reacting gas and conductive layer.
Embodiment 2
As shown in Figure 5, transparency conductive electrode processing unit (plant) includes template body 1, absorption platform 2 and for template body 1 being pressed on the compressing member 3 on absorption platform 2, template body 1 is plate, template body 1 is arranged on absorption platform 2, template body 1 is provided with sealing ring 11, contact 12 and passage 13, sealing ring 11 and contact 12 are fixed on the template body 1 side near transparent conductive material, contact 12 and transparent conductive material 5 contact position indent have pressure chamber 121, contact 12 is positioned at sealing ring 11, noncontact chamber is formed between sealing ring 11 and contact 12, passage 13 is arranged on template body 1 noncontact chamber place, passage 13 is two or more.
During use; transparent conductive material 5 is adsorbed on absorption platform 2; template body 1 is fully contacted with transparent conductive material 5 under compressing member 3 acts on; sealing ring 11 and contact 12 fully support on transparent conductive material 5; noncontact chamber forms conversion zone on transparent conductive material 5 surface; reacting gas is imported to conversion zone by passage 13; reacting gas and conductive layer react after terminating; protective gas is passed into conversion zone again by passage 13; remove the residual reaction gas in conversion zone; remove template body 1, obtain transparency conductive electrode.
Absorption platform 2 can realize the fully fixing of transparent conductive material 5, compressing member 3 acts on template body 1, realize the template body 1 compression on transparent conductive material 5, guarantee template body 1 is fully contacted with transparent conductive material 5, noncontact chamber forms conversion zone on transparent conductive material 5 surface, offer space is reacted, it is ensured that reaction is normally carried out for reacting gas and conductive layer;Pressure chamber 121 can ensure that constant pressure in the territory, non-reaction zone of conductive layer, thus the territory, non-reaction zone effectively protecting conductive layer is not affected by reacting gas.
Embodiment 3
As shown in Figure 6, transparency conductive electrode processing unit (plant) includes template body 1, absorption platform 2, for template body 1 being pressed on compressing member 3 on absorption platform 2 and flexible protective film 4, template body 1 is plate, template body 1 is arranged on absorption platform 2, template body 1 is provided with sealing ring 11, contact 12 and passage 13, sealing ring 11 and contact 12 are fixed on the template body 1 side near transparent conductive material, contact 12 and transparent conductive material 5 contact position indent have pressure chamber 121, contact 12 is positioned at sealing ring 11, noncontact chamber is formed between sealing ring 11 and contact 12, passage 13 is arranged on template body 1 noncontact chamber place, passage 13 is two or more;The noncontact chamber place of absorption platform 2 corresponding templates body 1 is provided with gas port 21, and flexible protective film 4 is arranged between absorption platform 2 and template body 1.
During use; transparent conductive material 5 is adsorbed on absorption platform 2; flexible protective film 4 covers on transparent conductive material 5; template body 1 is fully contacted with flexible protective film 4 under compressing member 3 acts on; sealing ring 11 and contact 12 fully support on flexible protective film 4; flexible protective film 4 and transparent conductive material 5 form conversion zone at noncontact chamber place; reacting gas is imported to conversion zone by gas port 21; making flexible protective film 4 bubbling in conversion zone form reaction compartment, the conductive layer in reaction compartment and reacting gas react;After reaction terminates, pass into protective gas by gas port 21 to reaction compartment and remove the residual reaction gas in reaction compartment, remove template body 1 and flexible protective film 4, obtain transparency conductive electrode.
Absorption platform 2 can realize the fully fixing of transparent conductive material 5; compressing member 3 acts on template body 1; realize the template body 1 compression on flexible protective film 4; guarantee template body 1 is fully contacted with flexible protective film 4; flexible protective film 4 and transparent conductive material 5 form conversion zone at noncontact chamber place; after ventilation, react offer space for reacting gas and conductive layer in bubbling, it is ensured that reaction is normally carried out;Sealing ring 11 and contact 12 support at flexible protective film 4 place owing to compression cannot be introduced into reacting gas, thus effectively protecting the electric conductivity in the territory, non-reaction zone of conductive layer.
Embodiment 4
As shown in Figure 7, in the present invention, transparency conductive electrode processing unit (plant) includes template body 1, template body 1 is roll shape, template body 1 is provided with sealing ring 11, contact 12 and passage 13, sealing ring 11 and contact 12 are fixed on the template body 1 side near transparent conductive material, and contact 12 is positioned at sealing ring 11, form noncontact chamber between sealing ring 11 and contact 12, passage 13 is arranged on template body 1 noncontact chamber place, and passage 13 is two or more.
During use; pass through external force traction; template body 1 can be fully contacted with transparent conductive material 5, and sealing ring 11 and contact 12 fully support on transparent conductive material 5, and noncontact chamber forms conversion zone on transparent conductive material 5 surface; reacting gas is imported to conversion zone by passage 13; reacting gas and conductive layer react after terminating, and pass into protective gas to conversion zone again by passage 13, remove the residual reaction gas in conversion zone; remove template body 1, obtain transparency conductive electrode.
Conversion zone reacts offer space for reacting gas and conductive layer, it is ensured that while reaction is normally carried out, sealing ring 11 and contact 12 fully support on transparent conductive material 5, effectively protect the electric conductivity in territory, conductive layer non-reaction zone.
In above-mentioned embodiment 1-3, absorption platform 2 is internal can be provided with heating module, it is achieved effective control of temperature during reaction.
In above-mentioned embodiment 4, template body 1 is internal can be provided with heating module, or arranges assisted heating device at conductive material back side place, it is achieved effective control of temperature during reaction.
In conjunction with specific embodiments the method preparing transparency conductive electrode in the present invention is described further by above-mentioned embodiment below.
Embodiment 1
Embodiment 1 is adopted to carry out the preparation of transparency conductive electrode:
Wherein, transparent conductive material 5 obtains in the following manner: in the substrate of glass of cleaning, and the mixed aqueous solution of silk rod blade coating nano-silver thread, modified cellulose and surfactant makes conductive layer nano-silver thread thin film after drying, its sheet resistance is 50ohm/sq;In conversion zone, during reaction, temperature is 50 DEG C, and reacting gas is ozone and steam;After reaction terminates, the protective gas of employing is nitrogen.In the transparency conductive electrode obtained, being exposed to the silver wire in conversion zone, owing to nano wire the portion fractures mixed with ozone reaction formation oxygen becomes short-term, electrical conductivity is decreased obviously, and is in non-conductive state.
Embodiment 2
Embodiment 1 is adopted to carry out the preparation of transparency conductive electrode:
1) wherein, transparent conductive material 5 obtains in the following manner: on PET (polyethylene terephthalate), the mixed solution of silk rod blade coating nano-silver thread, modified cellulose and surfactant, making conductive layer after drying is nano-silver thread thin film, and its sheet resistance is 55ohm/sq;In conversion zone, during reaction, temperature is 30 DEG C, and reacting gas is the mixing gas of propane diamine, water vapour and air;After reaction terminates, the protective gas of employing is air.In the transparency conductive electrode obtained, being exposed to the silver wire in conversion zone, owing to reactive moieties fragments into short-term, electrical conductivity is decreased obviously, and is in non-conductive state.
Embodiment 3
Embodiment 2 is adopted to carry out the preparation of transparency conductive electrode:
Wherein, transparent conductive material 5 obtains in the following manner: the mixed solution of silk rod blade coating NANO CRYSTAL COPPER WIRE, modified cellulose and surfactant on glass, makes conductive layer NANO CRYSTAL COPPER WIRE thin film after drying, and its sheet resistance is 60ohm/sq;In conversion zone, during reaction, temperature is 100 DEG C, and reacting gas is the mixing gas of ozone and water vapour;After reaction terminates, the protective gas of employing is noble gas.In the transparency conductive electrode obtained, being exposed to the copper cash in conversion zone, the nano wire the portion fractures that mix due to reaction formation oxygen become short-term, and electrical conductivity is decreased obviously, and is in non-conductive state.
Embodiment 4
Embodiment 2 is adopted to carry out the preparation of transparency conductive electrode:
Wherein, transparent conductive material 5 obtains in the following manner: by spraying silver nano-grain conductive ink mode prepared silver grid transparent conductive material on heat polycarbonates sheet material, its sheet resistance is 60ohm/sq;In conversion zone, during reaction, temperature is 100 DEG C, and reacting gas is the mixing gas of ozone and water vapour;After reaction terminates, the protective gas of employing is noble gas.In the transparency conductive electrode obtained, being exposed to the silver-colored grid in conversion zone, owing to reaction rear section generates the sulfide of silver, electrical conductivity is decreased obviously, and is in non-conductive state.
Embodiment 5
Embodiment 3 is adopted to carry out the preparation of transparency conductive electrode:
Wherein, transparent conductive material 5 obtains in the following manner: preparing carbon nano tube transparent conductive material by mode of printing on glass, its sheet resistance is 40ohm/sq;In conversion zone, during reaction, temperature is 60 DEG C, and reacting gas is the mixing gas of ozone and water vapour;After reaction terminates, the protective gas of employing is air.In the transparency conductive electrode obtained, being exposed to the carbon nanometer in conversion zone, owing to reaction rear section fragments into short-term, electrical conductivity is decreased obviously, and is in non-conductive state.
Embodiment 6
Embodiment 3 is adopted to carry out the preparation of transparency conductive electrode:
Wherein, transparent conductive material 5 obtains in the following manner: preparing nickel screen lattice transparent conductive material by electroplating technology on glass, its sheet resistance is 45ohm/sq;In conversion zone, during reaction, temperature is 150 DEG C, and reacting gas is the mixing gas of steam and ozone;After reaction terminates, the protective gas of employing is noble gas.In the transparency conductive electrode obtained, being exposed to the nickel screen lattice in conversion zone, owing to generating the oxide of nickel after reaction, electrical conductivity is decreased obviously, and is in non-conductive state.
Embodiment 7
Embodiment 4 is adopted to carry out the preparation of transparency conductive electrode:
Wherein, transparent conductive material 5 obtains in the following manner: preparing silver grid transparent conductive material by electroplating technology on PET (polyethylene terephthalate), its sheet resistance is 40ohm/sq;In conversion zone, during reaction, temperature is 50 DEG C, and reacting gas is the gaseous mixture of ozone and steam;After reaction terminates, the protective gas of employing is air.In the transparency conductive electrode obtained, being exposed to the silver-colored grid in conversion zone, owing to reaction rear section aoxidizes and fragments into short-term, electrical conductivity is decreased obviously, and is in non-conductive state.
nullIn above-described embodiment,Pass through spin coating、Spraying、Printing、Self assembly、Vapour deposition、Liquid deposition or electroplating technology are at glass、Macromolecule transparent membrane (such as PET film) or macromolecular sheet material are (such as PMMA sheet material,PC sheet material,PET sheet) on form conductive layer,Conductive layer can select 1-dimention nano conductive material such as metal nanometer line transparent conductive material、Carbon nano tube transparent conductive material、Nano metal band transparent conductive material、Nano metal rod transparent conductive material etc.,Two-dimensional nano conductive material such as nanometer metallic film transparent conductive material or carbon system transparent conductive material (Graphene transparent conductive material),Metal nanometer line transparent conductive material is (such as silver、Nickel、Copper、Palladium、Platinum、Gold、Any one elemental metals nano wire or several alloying metal nano wires in cobalt and ferrum)、Metal grill transparent conductive material is (such as silver、Nickel、Copper、Aluminum、Palladium、Platinum、Gold、Any one elemental metals grid or several alloying metal grids in cobalt and ferrum)、Electrically conducting transparent macromolecular material is (such as conducting polymer PEDOT/PSS (poly-3,4-ethylenedioxy thiophene/poly styrene sulfonate)) and burning system transparent conductive material.
During reaction, reacting gas can be the mixture of one or more in ozone, steam, hydrogen peroxide, organic amine, ammonia, halogen gas and compound, carbon dioxide, organic acid, nitric acid, hydrochloric acid, sulfur vapor and sulfide steam;Reaction temperature can dynamically adjusting according to real reaction speed between 0-150 DEG C.
After reaction terminates, the protective gas being filled with can be in nitrogen, air and noble gas one or more.
Adopt above replacement scheme, all can prepare transparency conductive electrode, and its Conductive layer portions conductive material is converted into electrically non-conductive material, thus obtaining the electrode of patterning, and conductive region and non-conducting areas poor optical properties heteropole are low, realizing the shadow etching that disappears completely, effect is notable in actual applications.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various corresponding changes and deformation, and all these change and deformation all should belong within the protection domain of the claims in the present invention.