A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar   cells up to 5.31%

doi:10.1088/0957-4484/24/48/484008

CORC > 北京大学 > 工学院

	A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar cells up to 5.31%
	Cheng, Pei ; Li, Yongfang ; Zhan, Xiaowei
刊名	nanotechnology
	2013
关键词	OPEN-CIRCUIT-VOLTAGE POWER CONVERSION EFFICIENCY SELF-ORGANIZATION INVERTED STRUCTURE SMALL MOLECULES POLYMER BLENDS MORPHOLOGY PERFORMANCE POLY(3-HEXYLTHIOPHENE) FABRICATION
DOI	10.1088/0957-4484/24/48/484008
英文摘要	To achieve ideal phase separation in P3HT:PCBM (1:1, w/w) blend films, a selective second solvent, DMF, which cannot dissolve P3HT but slightly dissolves PCBM, was added into 1,2-dichlorobenzene. Addition of 10% DMF led to better charge transport, better morphology and average power conversion efficiency (PCE) enhancement from 3.75% to 4.29%. To form an acceptor rich layer near the cathode and achieve effective vertical phase separation, PCBM solution in DMF was spin-coated on the top surface of the P3HT: PCBM active layer. The PCBM rich layer enhanced hole blocking and electron transport, leading to an average PCE improvement from 4.29% to 4.83% (for the PCBM rich layer formed by a 2 mg ml(-1) PCBM solution). Finally, to obtain more uniform and smooth films with better contact of Ca/PCBM and BHJ/PCBM interfaces, the films were thermally annealed at 120 degrees C for 10 min after spin coating the PCBM rich layer, leading to an average PCE enhancement from 4.83% to 5.17% (the best PCE was 5.31%).; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; SCI(E); EI; 0; ARTICLE; 48; 24
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/390658]
专题	工学院
推荐引用方式 GB/T 7714	Cheng, Pei,Li, Yongfang,Zhan, Xiaowei. A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar cells up to 5.31%[J]. nanotechnology,2013.
APA	Cheng, Pei,Li, Yongfang,&Zhan, Xiaowei.(2013).A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar cells up to 5.31%.nanotechnology.
MLA	Cheng, Pei,et al."A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar cells up to 5.31%".nanotechnology (2013).