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

被引：10

作者：

Chen, Wei-Bing ^{[1
,2
,3
]}

Xu, Zong-Xiang ^{[4
]}

Li, Kai ^{[2
,3
]}

Chui, Stephen Sin-Yin ^{[2
,3
]}

Roy, V. A. L. ^{[4
]}

Lai, Pui-To ^{[5
]}

Che, Chi-Ming ^{[2
,3
]}

机构：

[1] Hunan Univ Technol, Sch Comp & Commun, Zhuzhou 412007, Peoples R China

[2] Univ Hong Kong, Dept Chem, Inst Mol Funct Mat, Hong Kong, Hong Kong, Peoples R China

[3] Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R China

[4] City Univ Hong Kong, Dept Phys & Math Sci, Kowloon, Hong Kong, Peoples R China

[5] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China

来源：

CHINESE PHYSICS B | 2012年 / 21卷 / 07期

基金：

中国国家自然科学基金;

关键词：

crystallinity; polymer solar cell; ultrasonic irradiation; nanoscale phase separation; PHOTOVOLTAIC CELLS; SELF-ORGANIZATION; EFFICIENCY; FILMS;

D O I：

10.1088/1674-1056/21/7/078401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 the polymer crystallinity and nanoscale phase separation using an ultrasonic irradiation mixing approach for the polymer. The grazing incidence X-ray diffraction, UV/Vis spectroscopic, and atomic force microscopic measurement results for the P3HT/PCBM blend films reveal that the P3HT/PCBM film fabricated by ultrasonic irradiation mixing of the P3HT and PCBM solutions for 10 min has a higher degree of crystallinity, a higher absorption efficiency, and better phase separation, which together account for the higher charge transport properties and photovoltaic cell performance.

引用

页数：6

共 26 条

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