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Citation: LIU Zhiyong, XU Wentao, WANG Ning, YANG Xiaoniu. Preparation of Large-Area Inverted Polymer Solar Cells by Spray Coating Technique[J]. Chinese Journal of Applied Chemistry, ;2012, 29(12): 1423-1427. doi: 10.3724/SP.J.1095.2012.20433 shu

Preparation of Large-Area Inverted Polymer Solar Cells by Spray Coating Technique

1.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130021, China

Corresponding author: WANG Ning, YANG Xiaoniu,
Received Date: 27 September 2012
Available Online: 11 October 2012
Fund Project: 国家高技术研究发展计划(863)(2011AA050524) (863)(2011AA050524)国家自然科学青年基金(21104077) (21104077)

Large-area inverted polymer solar cells with a device structure of ITO/ZnO/P3HT:PCBM/V₂O₅/Ag(P3HT:poly(3-hexylthiophene);PCBM:[6,6]-phenyl C61-butyric acid methyl ester) were prepared with an active area of 1.0×1.1 cm² by spray coating technique.UV-Vis absorption spectrum of the P3HT:PCBM film indicated that the absorbance was dramatically strengthened,and the absorption peaks were red-shifted to some extent.ZnO and V₂O₅ were used to replace LiF and PEDOT:PSS(4-ethylenedioxythiophene:polystyrene sulfonate) as the interfacial modified layers,in order to avoid corrosion of PEDOT:PSS to ITO layer and deliquescence of LiF.In addition,Ag instead of Al was evaporated as the back electrode to avoid the oxidization of Al electrode.The efficiency of the device increased from 1.1% to 1.65% after thermal annealing.The stability of the inverted devices was markedly improved compared with traditional devices,with the efficiencies decreased by only 10% after storage for 8 weeks.
- spray coating,
- polymer solar cells,
- P3HT:PCBM,
- ZnO nanoparticles
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