CN102403461A - Preparation method for flexible organic film solar cell - Google Patents
Preparation method for flexible organic film solar cell Download PDFInfo
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- CN102403461A CN102403461A CN2011103854946A CN201110385494A CN102403461A CN 102403461 A CN102403461 A CN 102403461A CN 2011103854946 A CN2011103854946 A CN 2011103854946A CN 201110385494 A CN201110385494 A CN 201110385494A CN 102403461 A CN102403461 A CN 102403461A
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to a preparation method for a flexible organic film solar cell, which belongs to the technical field of the solar cell. The flexible organic film solar cell takes a polyethylene glycol terephthalate (PET) film coated with indium a tin oxid (ITO) transparent conductive layer as a positive electrode, an organic layer formed by copper phthalocyanine (CuPc) and fullerene (C60) according to different layers, thicknesses and ratios as a light absorption layer, a CuPc film as an exciton blocking layer, and an aluminum film as a negative electrode. The flexible organic film solar cell is characterized in that: the exciton blocking layer is provided. The cell structure is ITO/CuPc/CuPc : C60/C60/CuPc/Al. The preparation method comprises the following steps of: washing a flexible substrate; placing the substrate and organic raw materials in a vacuum chamber; bombing and baking the substrate later, carrying out heating evaporation to resistors to deposit a light absorption layer and an exciton blocking layer; and finally depositing an aluminum electrode by mask evaporation. The flexible organic film solar cell has the advantages of low cost, light weight, simple manufacturing technology, moderate bendability, high photoelectric conversion efficiency and the like.
Description
Technical field
The present invention relates to technical field of solar cells, particularly relate to a kind of preparation method of flexible organic film solar cell.
Background technology
Solar cell is the device that solar energy is converted into electric energy.Research and most widely used solar cell mainly are monocrystalline silicon, polysilicon and amorphous silicon series battery.Because silion cell is harsh to material requirements, device manufacturing process is complicated, and is difficult for carrying out large tracts of land processing, and production cost is high, has limited its extensive use.Outside the silica removal series, the semi-conducting material that can supply to make solar cell also has a lot, for example GaAs, GaSb, GaInP, CuInSe
2, multi-element compounds such as CdS and CdTe.Their photoelectric conversion efficiencys are high, but owing to Ga, In are rare elements, Cd, As are poisonous elements, so the development of this type battery receives resource, environmental limit.
The organic film solar cell with its raw material be easy to get, cheap, characteristics such as preparation technology is simple, low in the pollution of the environment, paid attention to by people day by day.Present most of organic film solar cell is all made on hard substrates, can not takeup type large-scale production, and the solar cell quality of gained is big, is difficult for transportation, installs and uses.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of flexible organic film solar cell is to reduce solar cell production cost, weight reduction, raising photoelectric conversion efficiency.
The present invention provides a kind of preparation method of flexible organic film solar cell, may further comprise the steps:
(1) cleans substrate;
(2) under vacuum condition, substrate is bombarded and toast, to remove the volatile materials that substrate was comprised;
(3) resistance heating evaporation deposition light absorbing zone;
(4) resistance heating evaporation deposition exciton barrier-layer;
(5) obtain the aluminium electrode through the mask vapor deposition.
Preferably, substrate is for being coated with PETG (PET) flexible substrate of tin indium oxide (ITO) transparency conducting layer; Light absorbing zone contains copper phthalocyanine (CuPc) layer and fullerene (C
60) layer; Exciton barrier-layer is the copper phthalocyanine layer.
More preferably, light absorbing zone also contains copper phthalocyanine, fullerene blended layer.
Wherein the thickness of exciton barrier-layer is 9-11nm.
The preferred process conditions of each step are following: in the step (2), and background pressure time bombardment 10 minutes for 30Pa, bombarding current is 30mA; Background pressure 5 * 10
-3Pa toasted 30 minutes down, and baking temperature is 30 ℃; In step (3), (4), (5), monitor each layer thickness in real time through QCM, control organic layer growth rate is 10nm/min, and the aluminium layer-growth rate is 30nm/min; In the step (5), the aluminium thickness of electrode is 70nm, and the electrode effective area is 5mm * 5mm.
Committed step of the present invention is step (4), behind the light absorbing zone that evaporates, continues the vapor deposition exciton barrier-layer.The main effect of exciton barrier-layer has: one, stop the exciton of light absorbing zone to be escaped through the aluminium electrode, improve the exciton collection efficiency; Two, stop that aluminium steam is through diffusing into light absorbing zone in the aluminium electrode production process, the protection light absorbing zone is not destroyed; Three, stop that oxygen and moisture penetration in the environment is to light absorbing zone.
The flexible organic film solar cell of the present invention's preparation is a positive pole with PETG (PET) film that is coated with tin indium oxide (ITO) transparency conducting layer, copper phthalocyanine (CuPc) and fullerene (C
60) organic layer processed in the different numbers of plies, thickness, ratio is light absorbing zone, the CuPc film is an exciton barrier-layer, the aluminium film is a negative pole.Battery structure is ITO/CuPc/CuPc: C
60/ C
60/ CuPc/Al.
The invention provides a kind of complete flexible organic film solar cell preparation technology with industrialization potential.The flexible substrate that is adopted is the flexible PET film that is coated with the ITO transparency conducting layer, and the maximum characteristics of this flexible organic film solar cell are that backing material is soft, can the takeup type large tracts of land produce, and solar cell can the appropriateness bending.
Description of drawings
Fig. 1 is a flexible organic film solar cell junction composition of the present invention.
Embodiment
Embodiment 1
PETG (PET) film that choosing is coated with tin indium oxide (ITO) transparency conducting layer is a substrate, and ultrasonic cleaning is 5 minutes in acetone, with the distilled water flushing, 80 ℃ of oven dry 20 minutes.The square resistance of the substrate after the cleaning is 90 Ω/, and light transmittance is 80%.
Adopt high vacuum coating unit, substrate is held under the arm on substrate frame, the distance of substrate frame and evaporation source is 13cm, and Organic Ingredients is placed the evaporation boat, has closed vacuum chamber.When the vacuum degree of vacuum chamber is the 30Pa left and right sides, begin bombardment and handled substrate 10 minutes, bombarding current is 30mA.Continue to be evacuated to 5 * 10
-3About Pa, toasted 30 minutes down at 30 ℃.Slowly increase evaporation current, successively hydatogenesis CuPc light absorbing zone, CuPc and C
60Blend light absorbing zone, C
60Light absorbing zone and CuPc exciton barrier-layer.After finishing, obtain the aluminium electrode through the mask vapor deposition, the control electrode area is 5mm * 5mm.In evaporate process, substrate frame guarantees uniform film thickness with the even velocity rotation, monitors each layer thickness in real time with QCM, and control organic layer growth rate is that 10nm/min, aluminium electrode growth speed are 30nm/min, and the aluminium film thickness is 70nm.At last, at 10mW/cm
2Simulated solar irradiation under the performance of test battery.
The manufacturing of light absorbing zone: respectively with CuPc, press uniform CuPc of 1:2 mixed in molar ratio and C
60Mixture, C
60Place three evaporation boats of vacuum chamber, order hydatogenesis 10nm CuPc, 90nm CuPc:C
60Mixture, 20nm C
60With 9nm CuPc.
The flexible organic film solar cell performance parameter that obtains is: short-circuit current density J
Sc=0.80mA/cm
2, open circuit voltage V
Oc=0.257V, fill factor, curve factor FF=39%, photoelectric conversion efficiency η=0.80%.
Embodiment 2
PETG (PET) film that choosing is coated with tin indium oxide (ITO) transparency conducting layer is a substrate, and ultrasonic cleaning is 5 minutes in acetone, with the distilled water flushing, 80 ℃ of oven dry 20 minutes.The square resistance of the substrate after the cleaning is 90 Ω/, and light transmittance is 80%.
Adopt high vacuum coating unit, substrate is held under the arm on substrate frame, the distance of substrate frame and evaporation source is 13cm, and Organic Ingredients is placed the evaporation boat, has closed vacuum chamber.When the vacuum degree of vacuum chamber is the 30Pa left and right sides, begin bombardment and handled substrate 10 minutes, bombarding current is 30mA.Continue to be evacuated to 5 * 10
-3About Pa, toasted 30 minutes down at 30 ℃.Slowly increase evaporation current, successively evaporate CuPc light absorbing zone, CuPc and C
60Blend light absorbing zone, C
60Light absorbing zone, CuPc exciton barrier-layer.After finishing, obtain the aluminium electrode through the mask vapor deposition, the control electrode area is 5mm * 5mm.In evaporate process, substrate frame guarantees uniform film thickness with the even velocity rotation, monitors each layer thickness in real time with QCM, and control organic layer growth rate is that 10nm/min, aluminium electrode growth speed are 30nm/min, and the aluminium film thickness is 70nm.At last, at 10mW/cm
2Simulated solar irradiation under the performance of test battery.
The manufacturing of light absorbing zone: respectively with CuPc, press uniform CuPc of 1:2 mixed in molar ratio and C
60Mixture, C
60Place three evaporation boats of vacuum chamber, order hydatogenesis 10nm CuPc, 90nm CuPc:C
60Mixture, 20nm C
60With 11nm CuPc.
The flexible organic film solar cell performance parameter that obtains is: short-circuit current density J
Sc=0.76mA/cm
2, open circuit voltage V
Oc=0.269V, fill factor, curve factor FF=41%, photoelectric conversion efficiency η=0.85%.
Claims (10)
1. the preparation method of a flexible organic film solar cell is characterized in that may further comprise the steps:
(1) cleans substrate;
(2) under vacuum condition, substrate is bombarded and toast;
(3) resistance heating evaporation deposition light absorbing zone;
(4) resistance heating evaporation deposition exciton barrier-layer;
(5) obtain the aluminium electrode through the mask vapor deposition.
2. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that substrate is the PETG that is coated with the indium tin oxide transparent conductive layer.
3. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that light absorbing zone contains copper phthalocyanine layer and Fullerene layer.
4. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that light absorbing zone also contains copper phthalocyanine, fullerene blended layer.
5. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that exciton barrier-layer is the copper phthalocyanine layer.
6. according to the preparation method of the flexible organic film solar cell of claim 1, the thickness that it is characterized in that exciton barrier-layer is 9-11nm.
7. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that in the step (2), background pressure bombardment 10 minutes during for 30Pa, bombarding current is 30mA; Background pressure 5 * 10
-3Pa toasted 30 minutes down, and baking temperature is 30 ℃.
8. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that in step (3), (4), (5) that control organic layer growth rate is 10nm/min, the aluminium layer-growth rate is 30nm/min.
9. according to the preparation method of the flexible organic film solar cell of claim 1, it is characterized in that in the step (5), the aluminium thickness of electrode is 70nm, the electrode effective area is 5mm * 5mm.
10. the prepared solar cell of preparation method of each flexible organic film solar cell in the claim 1 ~ 9.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582332A (en) * | 2009-06-29 | 2009-11-18 | 中国科学院等离子体物理研究所 | Application of down-conversion luminescent material on dye-sensitized solar cells |
| US20110203667A1 (en) * | 2006-01-25 | 2011-08-25 | Global Oled Technology Llc | Fluorocarbon electrode modification layer |
| WO2011113195A1 (en) * | 2010-03-15 | 2011-09-22 | 海洋王照明科技股份有限公司 | Organic solar cell and method for manufacturing the same |
| US20110237019A1 (en) * | 2010-03-23 | 2011-09-29 | Horng Sheng-Fu | Method for Improving the Efficiency of Flexible Organic Solar Cells |
-
2011
- 2011-11-29 CN CN2011103854946A patent/CN102403461A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110203667A1 (en) * | 2006-01-25 | 2011-08-25 | Global Oled Technology Llc | Fluorocarbon electrode modification layer |
| CN101582332A (en) * | 2009-06-29 | 2009-11-18 | 中国科学院等离子体物理研究所 | Application of down-conversion luminescent material on dye-sensitized solar cells |
| WO2011113195A1 (en) * | 2010-03-15 | 2011-09-22 | 海洋王照明科技股份有限公司 | Organic solar cell and method for manufacturing the same |
| US20110237019A1 (en) * | 2010-03-23 | 2011-09-29 | Horng Sheng-Fu | Method for Improving the Efficiency of Flexible Organic Solar Cells |
Non-Patent Citations (2)
| Title |
|---|
| 梁氏秋水等: "柔性ITO衬底上铜酞菁薄膜有序生长的X射线衍射研究", 《化工新型材料》, vol. 37, no. 11, 30 November 2009 (2009-11-30), pages 40 - 42 * |
| 梁氏秋水等: "铜酞菁与富勒烯共混层对柔性薄膜太阳电池光伏性能的影响", 《功能材料》, vol. 40, no. 7, 31 July 2009 (2009-07-31), pages 1140 - 1142 * |
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Application publication date: 20120404 |