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

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	A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar cells up to 5.31%
	Cheng, Pei 1,2; Li, Yongfang 1; Zhan, Xiaowei 1,3
刊名	NANOTECHNOLOGY
	2013-12-06
卷号	24 期号:48
ISSN号	0957-4484
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%).
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000326924500009
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46853]
专题	中国科学院化学研究所
通讯作者	Cheng, Pei
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China
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,2013,24(48).
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,24(48).
MLA	Cheng, Pei,et al."A DMF-assisted solution process boosts the efficiency in P3HT:PCBM solar cells up to 5.31%".NANOTECHNOLOGY 24.48(2013).