| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Highly Efficient PCDTBT:PC71 BM Based Photovoltaic Devices without Thermal Annealing Treatment |
| YANG Shao-Peng1**, KONG Wei-Guang1, LIU Bo-Ya1, ZHENG Wen-Yao2, LI Bao-Min2, LIU Xian-Hao2, FU Guang-Sheng1
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1College of Physics Science and Technology, Hebei University, Baoding 071002
2China Lucky Film Corporation, Baoding 071054
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| Cite this article: |
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YANG Shao-Peng, KONG Wei-Guang, LIU Bo-Ya et al 2011 Chin. Phys. Lett. 28 128401 |
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Abstract We propose an effective method to fabricate highly efficient organic photovoltaic cells based on poly [N−9"-hepta-decanyl-2, 7-carbazole-alt-5,5-(4'7'-di-2-thienyl-2'1'3'-b-enzothiadiazole):[6,6]-phenyl C71−butyric acid methyl ester (PCDTBT:PC71BM). A power conversion efficiency of as high as 5.6% and a fill factor of 53.7% are achieved from the optimized cells. The influence of surface morphology of the active layer on the performance of the cells is also investigated.
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| Keywords:
84.60.Bt
82.35.Jk
81.40.Ef
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Received: 28 June 2011
Published: 29 November 2011
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| PACS: |
84.60.Bt
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82.35.Jk
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(Copolymers, phase transitions, structure)
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81.40.Ef
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(Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization)
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