The mechanisms for introduction of n-dodecylthiol to modify the P3HT/PCBM morphology

	The mechanisms for introduction of n-dodecylthiol to modify the P3HT/PCBM morphology
	Liu JG ; Shao SY ; Wang HF ; Zhao K ; Xue LJ ; Gao X ; Xie ZY ; Han YC
刊名	organic electronics
	2010
卷号	11 期号:5 页码:775-783
关键词	HETEROJUNCTION SOLAR-CELLS POSTPRODUCTION TREATMENT PHOTOVOLTAIC DEVICES NANOSCALE MORPHOLOGY CHARGE-TRANSPORT PERFORMANCE EFFICIENCY POLY(3-HEXYLTHIOPHENE) ORGANIZATION ADDITIVES
ISSN号	1566-1199
通讯作者	han yc
中文摘要	the mechanisms for introduction of the additive to improve the poly(3-hexylthiophene) (p3ht):methanofullerene [6,6]-phenyl c61-butyric acid methyl ester (pcbm) organic solar cells performance are investigated. we add n-dodecylthiol to p3ht/pcbm solution and find that it both improves p3ht crystallinity and enhances p3ht/pcbm phase separation extent. uv-vis absorption spectroscopy (uv-vis) and dynamic light scattering (dls) results reveal that n-dodecylthiol reduces the p3ht chains entanglement in the solution, which facilitates coil-to-rod transformation, a premise condition for p3ht crystallization. also, it discloses that the influence of pcbm on the p3ht molecular interaction is diminished by adding n-dodecylthiol, this consequently benefits the p3ht crystallization during the film-forming process. furthermore, the enhanced p3ht crystallinity reduces the pcbm amount which dissolved in the amorphous regions of p3ht, then promotes the aggregation of pcbm, which contributes to the controlled scale of phase segregation. thus an increased p3ht crystallinity and a commensurate scale of phase separation balancing for exciton dissociation and charge transport and/or collection are finally obtained. this results in an almost threefold increase in device efficiencies when the volume fraction of additive is 2.0%, compared with reference devices without any additive in the photoactive layer as a consequence. (c) 2010 elsevier b. v. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000276638100009
公开日期	2012-06-06
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43775]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Liu JG,Shao SY,Wang HF,et al. The mechanisms for introduction of n-dodecylthiol to modify the P3HT/PCBM morphology[J]. organic electronics,2010,11(5):775-783.
APA	Liu JG.,Shao SY.,Wang HF.,Zhao K.,Xue LJ.,...&Han YC.(2010).The mechanisms for introduction of n-dodecylthiol to modify the P3HT/PCBM morphology.organic electronics,11(5),775-783.
MLA	Liu JG,et al."The mechanisms for introduction of n-dodecylthiol to modify the P3HT/PCBM morphology".organic electronics 11.5(2010):775-783.