Photovoltaic Property of Two Polymers Furnished by Different Acceptor Bolcks

doi:10.6023/cjoc201505028

Chin. J. Org. Chem. ›› 2015, Vol. 35 ›› Issue (12): 2583-2588.DOI: 10.6023/cjoc201505028 Previous Articles Next Articles

Articles

不同受体单元的两个聚合物光伏性质

秦瑞平, 耿凡, 王丹丰, 姚小静

河南师范大学物理与电子工程学院河南省光伏材料重点实验室新乡 453007

收稿日期:2015-05-18 修回日期:2015-07-09 发布日期:2015-08-25
通讯作者: 秦瑞平 E-mail:qinruiping@163.com
基金资助:
河南师范大学青年基金(No. 01026400061)、河南省基础与前沿技术研究计划(No. 1323004100247)、大学生创新(No. 2012011)资助项目.

Photovoltaic Property of Two Polymers Furnished by Different Acceptor Bolcks

Qin Ruiping, Geng Fan, Wang Danfeng, Yao Xiaojing

Key Laboratory of Photovoltaic Materials of Henan Province, College of Physics & Electronic Engineering, Henan Normal University, Xinxiang 453007

Received:2015-05-18 Revised:2015-07-09 Published:2015-08-25
Supported by:
Project supported by the Young Scientists Foundation of Henan Normal University (No. 01026400061), the Henan Province Basic and Frontier Technology Research Projects (No. 1323004100247) and the College Students’ Innovative Pilot Scheme (No. 2012011).

1. Photovoltaic Property of Two Polymers Furnished by Different Acceptor Bolcks.PDF(925KB)

Abstract

Two conjugated copolymers poly[4-(4,4'-dinonyl-2,2'-bithiazol-5-yl)-7-(4,4'-dinonyl-5'-(9-octyl-9H-carbazol- 2-yl)-2,2'-bithiazol-5-yl)benzo[c][1,2,5]thiadiazole] (HSD-5) and poly[9-octyl-2-(5-(2,3,5,6-tetrafluoro-4-(3-undecylthieno- [3,2-b]thiophen-2-yl)phenyl)-6-undecylthieno[3,2-b]thiophen-2-yl)-9H-carbazole] (HSD-7) were synthesized and their photophysical and photovoltaic properties were studied. The electrochemical characterization results showed that these two polymer possessed wide band-gaps of 2.16 and 2.53 eV, respectively. Solar cell devices based on polymer/PC71BM gave a power conversion efficiency (PCE) of 0.36% and 0.73% for HSD-5 and HSD-7, respectively. For the fluorine containing polymer HSD-7, the strong electronegativity of fluorine induces a strong dipole moment along the C—F bond, which resulted in a strong inter/intramolecular interaction and displayed significant influnce on the morphology of the active layer. Meanwhile, the large torsion angles between the acceptor blocks destroyed the conjugation and the electron delocalization. Finally, the structure-activity relationship was also discussed to understand the reason of the low power conversion efficiency (PCE).

Key words: acceptor, conjugated polymer, bulk-heterojunction solar cells, fluorinated blocks

Cite this article

Qin Ruiping, Geng Fan, Wang Danfeng, Yao Xiaojing. Photovoltaic Property of Two Polymers Furnished by Different Acceptor Bolcks[J]. Chin. J. Org. Chem., 2015, 35(12): 2583-2588.

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不同受体单元的两个聚合物光伏性质

Photovoltaic Property of Two Polymers Furnished by Different Acceptor Bolcks

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