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

作     者：刘宇譞 吕龙峰 宁宇 陆运章 鲁启鹏 张春梅 方一 唐爱伟 胡煜峰 娄志东 滕枫 侯延冰 

作者机构：Key Laboratory of Luminescence and Optical Information of the Ministry of Education Institute of Optoelectronic TechnologyBeijing Jiaotong University Department of Chemistry School of Science Beijing Jiaotong University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2014年第23卷第11期

页      面：666-671页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 083202[工学-粮食、油脂及植物蛋白工程] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61275175,61177017,and 61377028) the National Natural Science Foundation of China for Distinguished Yong Scholars(Grant No.61125505) 

主　　题：polymer solar cells solvent treatment vertical phase separation morphology 

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 collec- tion 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.