Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation

doi:10.1088/1674-1056/21/7/078401

中国物理B ›› 2012, Vol. 21 ›› Issue (7): 78401-078401.doi: 10.1088/1674-1056/21/7/078401

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation

陈卫兵^{a b}, 许宗祥^c, 李凯^b, 徐先贤^b, Roy V. A. L.^c, 黎沛涛^d, 支志明^b

a School of Computer and Communication, Hunan University of Technology, Zhuzhou 412007, China;
b Department of Chemistry, Institute of Molecular Functional Materials and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hongkong SAR, China;
c Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China;
d Department of Electrical & Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hongkong SAR, China

收稿日期:2011-10-01 修回日期:2012-01-18 出版日期:2012-06-01 发布日期:2012-06-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60871007).

Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation

Chen Wei-Bing(陈卫兵)^a)b)†, Xu Zong-Xiang(许宗祥)^c), Li Kai(李凯)^b), Chui Stephen Sin-Yin(徐先贤)^b), Roy V.~A.~L.^c), Lai Pui-To(黎沛涛)^d), and Che Chi-Ming(支志明)^b)

a School of Computer and Communication, Hunan University of Technology, Zhuzhou 412007, China;
b Department of Chemistry, Institute of Molecular Functional Materials and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hongkong SAR, China;
c Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China;
d Department of Electrical & Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hongkong SAR, China

Received:2011-10-01 Revised:2012-01-18 Online:2012-06-01 Published:2012-06-01
Contact: Chen Wei-Bing E-mail:wbchen2006@gmail.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60871007).

摘要/Abstract

摘要： In this paper, we report a high-performance P3HT/PCBM bulk-heterojunction solar cell with a power conversion efficiency of 4.85% fabricated by adjusting polymer crystallinity and nanoscale phase separation using an ultrasonic irradiation mixing approach of the polymer. The results of grazing incidence X-ray diffraction, UV/Vis spectroscopic, and atomic force microscopic measurements of the P3HT/PCBM blend films reveal that the P3HT/PCBM film fabricated by ultrasonic irradiation mixing P3HT and PCBM solutions for 10 min has higher degree of crystallinity, higher absorption efficiency, and better phase separation, which altogether account for the higher charge transport properties and photovoltaic cell performance.

关键词: crystallinity, polymer solar cell, ultrasonic irradiation, nanoscale phase separation

Abstract: In this paper, we report a high-performance P3HT/PCBM bulk-heterojunction solar cell with a power conversion efficiency of 4.85% fabricated by adjusting polymer crystallinity and nanoscale phase separation using an ultrasonic irradiation mixing approach of the polymer. The results of grazing incidence X-ray diffraction, UV/Vis spectroscopic, and atomic force microscopic measurements of the P3HT/PCBM blend films reveal that the P3HT/PCBM film fabricated by ultrasonic irradiation mixing P3HT and PCBM solutions for 10 min has higher degree of crystallinity, higher absorption efficiency, and better phase separation, which altogether account for the higher charge transport properties and photovoltaic cell performance.

Key words: crystallinity, polymer solar cell, ultrasonic irradiation, nanoscale phase separation

中图分类号: (Photoelectric conversion)

84.60.Jt

73.50.-h (Electronic transport phenomena in thin films) 72.20.Jv (Charge carriers: generation, recombination, lifetime, and trapping) 64.75.St (Phase separation and segregation in thin films)

陈卫兵, 许宗祥, 李凯, 徐先贤, Roy V. A. L., 黎沛涛, 支志明 . Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation[J]. 中国物理B, 2012, 21(7): 78401-078401.

Chen Wei-Bing(陈卫兵), Xu Zong-Xiang(许宗祥), Li Kai(李凯), Chui Stephen Sin-Yin(徐先贤), Roy V.~A.~L., Lai Pui-To(黎沛涛), and Che Chi-Ming(支志明) . Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation[J]. Chin. Phys. B, 2012, 21(7): 78401-078401.

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Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation

Improving performance of polymer solar cell by adjusting crystallinity and nanoscale phase separation

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