Effects of acetone-soaking treatment on the performance of polymer solar cells based on P3HT/PCBM bulk heterojunction

被引：8
|
作者：
Liu Yu-Xuan [1 ]
Lu Long-Feng [1 ]
Ning Yu [1 ]
Lu Yun-Zhang [1 ]
Lu Qi-Peng [1 ]
Zhang Chun-Mei [1 ]
Fang Yi [1 ]
Tang Ai-Wei [2 ]
Hu Yu-Feng [1 ]
Lou Zhi-Dong [1 ]
Teng Feng [1 ]
Hou Yan-Bing [1 ]
机构：
[1] Beijing Jiaotong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Sch Sci, Dept Chem, Beijing 100044, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 11期
基金：
中国国家自然科学基金;
关键词：
polymer solar cells; solvent treatment; vertical phase separation; morphology; VERTICAL PHASE-SEPARATION; PHOTOVOLTAIC CELLS; SELF-ORGANIZATION; FULLERENE; POLY(3-HEXYLTHIOPHENE); MORPHOLOGY; EFFICIENCY; BLENDS; FILMS; STRATIFICATION;
D O I：
10.1088/1674-1056/23/11/118802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The improvement of the acetone-soaking treatment to the performance of polymer solar cells based on the P3HT/PCBM bulk heterojunction is reported. Undergoing acetone-soaking, the PCBM does not distribute uniformly in the vertical direction, a PCBM enrichment layer forms on the top of the active layer, which is beneficial to the collection of the carriers and blocking the inverting diffusion carriers. X-ray photoelectron spectroscopy (XPS) analysis reveals that the PCBM weight ratio on the top of the active layer increases by 20% after the acetone-soaking treatment. Due to the nonuniform distribution of PCBM, the short-circuit current density, the open-circuit voltage, and the fill factor are enhanced significantly. Finally, the power conversion efficiency of the acetone-soaking device increases by 31% compared with the control device.
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收藏
页数：6
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