CN103904221A - Polyimide film for thin-film solar cell and preparation method thereof - Google Patents
Polyimide film for thin-film solar cell and preparation method thereof Download PDFInfo
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- CN103904221A CN103904221A CN201210587666.2A CN201210587666A CN103904221A CN 103904221 A CN103904221 A CN 103904221A CN 201210587666 A CN201210587666 A CN 201210587666A CN 103904221 A CN103904221 A CN 103904221A
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- film
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- film solar
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/88—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/87—Light-trapping means
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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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
Abstract
The invention provides a polyimide film for a thin-film solar cell and a preparation method thereof. The polyimide film comprises, by weight, 100 parts of polyimide resin and 0.0001-0.1 part of nanometer aluminum powder. Screw-type blending and extrusion equipment is used for blending the polyimide resin and the nanometer aluminum powder, the mixture is extruded, filtered and led into a cast die head, and then the processes such as cooling, drafting and rolling are conducted on the mixture to obtain the polyimide film for the thin-film solar cell. The product prepared through the method is attached to the light receiving surface of the thin-film solar cell or used as an upper packaging film of the solar cell, and therefore the generating efficiency of flexible or thin-film solar cells is increased directly.
Description
Technical field
The present invention relates to a kind of thin-film solar cells polyimide film and preparation method thereof, by using this film to be encapsulated in the surface of flexibility or thin-film solar cells incidence surface, directly improve the efficiency of flexibility or thin-film solar cells.
Background technology
Organic polymer material all has the very excellent optical transparency in visible wavelength range as polymethyl methacrylate (PMMA), polystyrene (PS) and Merlon (PC), and therefore these materials are often used as optics.But the temperature tolerance of general polymeric material is often inadequate, limit its use under hot environment.Thermostable transparent material refers to and can stand more than 250 DEG C the transparent material that processing is processed, and the ITO base plate that is mainly used in flexible solar battery base plate, liquid crystal display is replacing frangible glass, liquid crystal display alignment films, for the optical waveguide material that communicates to connect and for the half-wave plate of planar light circuit.In at present available material, polyimides (PI) should be preferred material.Water white transparency PI can be widely used in the high-tech sector such as microelectronics and photoelectron.For example in optical communication field, be used as optical waveguide material, filter, optical fiber, optoelectronic package material, second-order non-linear optical materials, photorefractive material, light-sensitive material and photoelectric material etc.Be used as aligning film material, the plastic base of negativity compensate film, flexible organic electro-luminescence display etc. in field of liquid crystal display.Be used as baseplate material and the antenna-reflected/collector material etc. of solar battery array at aerospace field, also can be used as the colourless coating material of large area seamless welding.Owing to can thering is higher refractive index and there is the good transparency in visible-range, also can be used as lens material.But general PI is the transparent material of yellowish-brown, be a main path of design water white transparency PI by the formation that reduces in molecule and intermolecular force reduces charge transfer complex (CTC).
Effectively utilizing in the middle of project of solar energy: solar photovoltaic utilization is research field with fastest developing speed in the last few years, most active.The making of general solar cell is mainly taking semi-conducting material as basis, opto-electronic conversion reaction generating occurs after utilizing photoelectric material to absorb luminous energy.According to the difference of material therefor, solar cell can be divided into: 1, silicon solar cell; 2, taking inorganic salts if the multi-element compounds such as GaAs III-V compound, cadmium sulfide, copper indium diselenide are as the solar cell of material; 3, the solar cell of preparing with functional high molecule material; 4, nano-crystalline solar battery etc.
What prior art operating efficiency was the highest is taking III-V family semiconductor inorganic materials as raw-material product.For example: the quantum well of the single junction type of GaAs/germanium falls into crystal structure, and its photoelectric conversion efficiency can reach >18 %; For example, and multiple junction quantum well falls into the solar cell of crystal structure: InGaP/GaAs/germanium, its photoelectric conversion efficiency can be up to >30 %.Most widely used at present, taking silicon as main: comprise amorphous silicon, photoelectric conversion efficiency approximately 9 %; Polysilicon, photoelectric conversion efficiency approximately 14 %; Monocrystalline silicon, photoelectric conversion efficiency approximately 17 %.Although in price, VI family elements Si is more cheap than III-V family semiconductor GaAs, the price of its manufacture, compared with macromolecule organic solar batteries, or expensive many; And in application, the light weight again overall plasticization organic solar batteries of the anxiety of crack-free can be realized via the processing of printing, except price reduces, be more suitable for the demand of portable electronic product, and indoor or cloudyly all can normally use (this is that siliceous solar cell is beyond one's reach), its practicality and market application range are promoted more.
Solar cell is a key technology, can advance more clean production of energy.But the Cost Problems of solar cell, has reduced the economic competitiveness of heliotechnics.For overcoming this problem, thin-film solar cells is the technology of current extensive use, can reduce in a large number the use amount of expensive semi-conducting material, but the absorbing amount of thin-film solar cells is lower, and Performance Ratio is not gone up traditional solar cell.
Thin-film solar module is to be made up of glass substrate, metal level, transparency conducting layer, electrical function box, glueing material, semiconductor layer etc.Organic and inorganic composite solar battery is the solar cell based on organic conjugate polymer-inorganic nano-crystal composite system, because of while tool high-molecular organic material good film-forming property, level structure and band gap are easy to regulate, can prepare low cost, large area, flexible solar battery device and inorganic nano-crystal material high stability by wet method, high mobility, can construct the advantages such as ordered nano-structure, and become the study hotspot of area of solar cell in recent years.Metal nanoparticle can guide light to enter better solar cell, prevents light escape.In traditional " thick film " solar cell, nano particle does not have any effect, is all by this film because all light absorbs, and this just relies on its thickness.But for film, nano particle just can be brought into play great role.Their scattering has increased light and has rested on the time in film, makes the light of overall absorption reach a kind of level, and traditional solar cell can match in excellence or beauty.
Aluminium and Nano silver grain are in the frequency spectrum of visible part, and focused ray enters solar cell well.But optical resonance also can cause nano particle to absorb light, and this efficiency that just means solar cell can be lower.Nano grain of silver sub-resonance is just in time in the crucial absorption spectrum part of solar cell, so the absorption of light is appreciable.Aluminum nanoparticles resonance has exceeded the crucial spectra part of solar cell.Loss to energy is less, and in addition, aluminum particulate is easy to passivation, although can change shape and size, after passivation, nano particle attribute change is very little.Nano particle has rough surface, and scattered beam can enter wide spectrum wave-length coverage more.This can bring larger absorption, thereby improves the whole efficiency of battery.
summary of the invention
The object of this invention is to provide a kind of thin-film solar cells polyimide film and preparation method thereof, by using this film to be encapsulated in the surface of flexibility or thin-film solar cells incidence surface, directly improve the efficiency of flexibility or thin-film solar cells.And tool has self-cleaning effect through flexibility or the thin-film solar cells of encapsulation.
For achieving the above object, the technical solution used in the present invention is as follows: thin-film solar cells polyimide film of the present invention, comprises the component of following weight parts: polyimide resin 100; Nanometer aluminium powder 0.0001-0.1.
Described polyimide resin is group or the hydroxyl of, silicon fluorine-containing through introducing, phosphorus or introduces the substituting group that volume is larger (as cast structural and other large side groups or at 2 of biphenyl, substituting group is introduced to produce non-coplanar structure in 2 '-position) destroy conjugation in a big way or make macromolecular chain bending, introducing fat (especially alicyclic ring) construction unit or adopting to make the monomer of main chain bending (as 3,4 '-and 3,3 '-dianhydride, the diamines that position replaces) etc. the polyimide resin of modification.
Such as Chinese patent CN102504255A, CN1970603A, CN102558556A, the disclosed polyimide resin of CN1018183B; Or document: 1. face is apt to silver etc., the novel synthetic and sign containing pyridine ring diamines and solvable transparent fluorinated polyimide thereof, synthetic technology and application the 03rd phase 5-12 in 2010,2. He Man etc., containing the preparation of benzothiazole fluorinated polyimide and nonlinear optical property, Acta PhySico-Chimica Sinica, 2010, the disclosed polyimide resin of 26,3073-3079.
The preparation method of polyimide film for thin-film solar cells of the present invention, comprises the steps:
(1) by polyimides; Nanometer aluminium powder is even by blender blended under agitation under-10 ~ 40 DEG C of temperature environments;
(2) above blend is imported to screw mixes extruder and carry out blending extrusion, temperature is controlled at 220-290 DEG C, extrudate after filtration, metering extrudes, curtain coating, cooling, drawing-off, traction, coiling process, obtains flexibility or thin-film solar cells polyimide film.
Nano metal aluminum particulate is easy to passivation, although can change shape and size, after passivation, nano particle attribute change is very little.Nano particle has rough surface, and scattered beam can enter wide spectrum wave-length coverage more.This can bring larger absorption, thereby improves the whole efficiency of battery.The scattering of metallic aluminium nano particle has increased light and has rested on the time in film, makes the light of overall absorption reach a kind of level, and traditional solar cell can match in excellence or beauty.Through using the thin-film solar cells of polyimide film processing of the present invention to improve 3-15% than the thin-film solar cells performance without this polyimide film.Thin-film solar cells is used after this use photocurable polyimide film, and metallic aluminium nano particle can guide light to enter preferably solar cell, prevents light escape.Solve in traditional " thick film " solar cell, nano particle does not have any effect and all essential problems that relies on thickness solution of light absorption.
Embodiment
embodiment 1:by polyimide resin (Ningbo Jinshan Electronic Materials Co., Ltd) 100 kg; Nanometer aluminium powder 0.02 kg, even by blender blended under agitation under 10 DEG C of temperature environments; Above blend is imported to screw mixes extruder and carry out blending extrusion, temperature is controlled at 285 DEG C, extrudate filters, measures and extrude that (measuring pump turnover pressure differential is 2MPa), casting films thickness 50UM, 10 DEG C of air are cooling, 4 times of degree of draft drawing-offs, release liners overlay films, the operation such as batches through 180 order filters, obtains flexibility or thin-film solar cells polyimide film.Through using the thin-film solar cells of this film to improve 3.6% than untapped thin-film solar cells performance.
embodiment 2:by polyimide resin (Ningbo Jinshan Electronic Materials Co., Ltd) 100 kg; Nanometer aluminium powder 0.0001 kg, even by blender blended under agitation under-10 DEG C of temperature environments; Above blend is imported to screw mixes extruder and carry out blending extrusion, temperature is controlled at 220 DEG C, extrudate filters, measures and extrude that (measuring pump turnover pressure differential is 2MPa), casting films thickness 50UM, 10 DEG C of air are cooling, 4 times of degree of draft drawing-offs, release liners overlay films, the operation such as batches through 180 order filters, obtains flexibility or thin-film solar cells polyimide film.Through using the thin-film solar cells of this film to improve 14.9% than untapped thin-film solar cells performance.
embodiment 3:by polyimide resin (Changchun applied chemistry institute) 100 kg; Nanometer aluminium powder 0.1 kg, even by blender blended under agitation under 40 DEG C of temperature environments; Above blend is imported to screw mixes extruder and carry out blending extrusion, temperature is controlled at 260 DEG C, extrudate filters, measures and extrude that (measuring pump turnover pressure differential is 2MPa), casting films thickness 50UM, 10 DEG C of air are cooling, 4 times of degree of draft drawing-offs, release liners overlay films, the operation such as batches through 180 order filters, obtains flexibility or thin-film solar cells polyimide film.Through using the thin-film solar cells of this film to improve 8.9% than untapped thin-film solar cells performance.
embodiment 4:by polyimides (Changchun applied chemistry institute) 100 kg; Nanometer aluminium powder 0.05 kg; Crosslinking and curing agent 0.5 kg, even by blender blended under agitation under 30 DEG C of temperature environments; Above blend is imported to screw mixes extruder and carry out blending extrusion, temperature is controlled at 295 DEG C, extrudate filters, measures and extrude that (measuring pump turnover pressure differential is 2MPa), casting films thickness 50UM, 10 DEG C of air are cooling, 4 times of degree of draft drawing-offs, release liners overlay films, the operation such as batches through 180 order filters, obtains flexibility or thin-film solar cells polyimide film.Through using the thin-film solar cells of this film to improve 6.6% than untapped thin-film solar cells performance.
Claims (3)
1. a thin-film solar cells polyimide film, is characterized in that, is mainly made up of the component of following weight parts: polyimide resin 100; Nanometer aluminium powder 0.0001-0.1.
2. according to right thin-film solar cells polyimide film, it is characterized in that: described polyimide resin is group or the hydroxyl of, silicon fluorine-containing through introducing, phosphorus or introduces the larger substituting group of volume and destroy conjugation in a big way or make macromolecular chain bending, introduce lipid structure unit or employing and can make the monomer modified polyimide resin of main chain bending.
3. the preparation method of polyimide film for the thin-film solar cells described in claim 1 or 2, is characterized in that comprising the steps:
(1) by polyimide resin; Nanometer aluminium powder is even by blender blended under agitation under-10 ~ 40 DEG C of temperature environments;
(2) above blend is imported to screw mixes extruder and carry out blending extrusion, temperature is controlled at 220-290 DEG C, extrudate after filtration, metering extrudes, curtain coating, cooling, drawing-off, traction, coiling process, obtains flexibility or thin-film solar cells polyimide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587666.2A CN103904221A (en) | 2012-12-31 | 2012-12-31 | Polyimide film for thin-film solar cell and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587666.2A CN103904221A (en) | 2012-12-31 | 2012-12-31 | Polyimide film for thin-film solar cell and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103904221A true CN103904221A (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210587666.2A Pending CN103904221A (en) | 2012-12-31 | 2012-12-31 | Polyimide film for thin-film solar cell and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090165845A1 (en) * | 2007-12-27 | 2009-07-02 | Industrial Technology Research Institute | Back contact module for solar cell |
| KR20110087378A (en) * | 2010-01-26 | 2011-08-03 | 인하대학교 산학협력단 | Silicon thin film solar cells using periodic or random metal nanoparticle layer and fabrication method thereof |
| CN102167824A (en) * | 2011-01-24 | 2011-08-31 | 中国科学院化学研究所 | Polyimide film and preparation method and applications thereof |
| CN102382303A (en) * | 2011-08-16 | 2012-03-21 | 中国科学院宁波材料技术与工程研究所 | Colorless and transparent polyimide resin material and preparation method thereof |
| CN102532895A (en) * | 2010-12-23 | 2012-07-04 | 财团法人工业技术研究院 | Copolyimide solution, copolyimide, display element, and solar cell |
-
2012
- 2012-12-31 CN CN201210587666.2A patent/CN103904221A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090165845A1 (en) * | 2007-12-27 | 2009-07-02 | Industrial Technology Research Institute | Back contact module for solar cell |
| KR20110087378A (en) * | 2010-01-26 | 2011-08-03 | 인하대학교 산학협력단 | Silicon thin film solar cells using periodic or random metal nanoparticle layer and fabrication method thereof |
| CN102532895A (en) * | 2010-12-23 | 2012-07-04 | 财团法人工业技术研究院 | Copolyimide solution, copolyimide, display element, and solar cell |
| CN102167824A (en) * | 2011-01-24 | 2011-08-31 | 中国科学院化学研究所 | Polyimide film and preparation method and applications thereof |
| CN102382303A (en) * | 2011-08-16 | 2012-03-21 | 中国科学院宁波材料技术与工程研究所 | Colorless and transparent polyimide resin material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| MOLUZH: "《铝纳米粒子制备更薄更轻太阳能电池》", 《新浪博客》 * |
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Application publication date: 20140702 |
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