Tuning morphology and photovoltaic properties of diketopyrrolopyrrole- based small-molecule solar cells by taloring end-capped aromatic groups

doi:10.1039/c3cp54548b

CORC > 化学研究所 > 中国科学院化学研究所

	Tuning morphology and photovoltaic properties of diketopyrrolopyrrole- based small-molecule solar cells by taloring end-capped aromatic groups
	Zhang, Shanlin 1; Wang, Xue 1,2; Tang, Ailing 1; Huang, Jianhua 1; Zhan, Chuanlang 1; Yao, Jiannian 1
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2014
卷号	16 期号:10 页码:4664-4671
ISSN号	1463-9076
DOI	10.1039/c3cp54548b
英文摘要	In this article, we selected BDT-DPP-BDT (DPP = diketopyrrolopyrrole and BDT = 4,8-di-2-(2-ethylhexyl)-thienyl- benzo[1,2-b:4,5-b']dithiophene) as the model backbone and end-capped it with hydrogen, octyl 2-cyano-3-(thiophen-2-yl)acrylate (CNR), and 2-hexylbithiophene (HTT), respectively, forming three small molecule donors: BDB, CNRBDB and HTTBDB. Introduction of a polar and planar electron-withdrawing unit of CNR to both ends of the BDB backbone enhances the hole mobility from 4.14 x 10(-4) to 7.75 x 10(-3) cm(2) V-1 s(-1) and raises the fill factor from 27 to 57% when blended with PC71BM. This is associated with the PC71BM phase size decreasing from 70 to 20 nm. When the electrondonating unit of HTT with poorer planarity is linked to both ends of the BDB backbone, both donor and acceptor phase sizes are decreased to 20 nm. The short-circuit current density is greatly improved from 4.22 to 9.66 mA cm(-2), and the fill factor is enhanced to 46%. Overall, this work demonstrates that the end-capped aromatic groups play an important role in tuning the phase size and photovoltaic properties of DPP-based small molecule solar cells.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000332393200026
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49969]
专题	中国科学院化学研究所
通讯作者	Zhan, Chuanlang
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.QuFu Normal Univ, Key Lab Life Organ Anal, Qufu 273165, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shanlin,Wang, Xue,Tang, Ailing,et al. Tuning morphology and photovoltaic properties of diketopyrrolopyrrole- based small-molecule solar cells by taloring end-capped aromatic groups[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(10):4664-4671.
APA	Zhang, Shanlin,Wang, Xue,Tang, Ailing,Huang, Jianhua,Zhan, Chuanlang,&Yao, Jiannian.(2014).Tuning morphology and photovoltaic properties of diketopyrrolopyrrole- based small-molecule solar cells by taloring end-capped aromatic groups.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(10),4664-4671.
MLA	Zhang, Shanlin,et al."Tuning morphology and photovoltaic properties of diketopyrrolopyrrole- based small-molecule solar cells by taloring end-capped aromatic groups".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.10(2014):4664-4671.