5,6-Difluorobenzothiadiazole and silafluorene based conjugated polymers for organic photovoltaic cells

doi:10.1039/c4tc00340c

CORC > 化学研究所 > 中国科学院化学研究所

	5,6-Difluorobenzothiadiazole and silafluorene based conjugated polymers for organic photovoltaic cells
	Li, Guangwu 1; Kang, Chong 1; Gong, Xue 1; Zhang, Jicheng 1; Li, Weiwei 1; Li, Cuihong 1; Dong, Huanli 2; Hu, Wenping 2; Bo, Zhishan 1
刊名	JOURNAL OF MATERIALS CHEMISTRY C
	2014
卷号	2 期号:26 页码:5116-5123
ISSN号	2050-7526
DOI	10.1039/c4tc00340c
英文摘要	To achieve 5,6-difluorobenzothiadiazole and 2,7-linked silafluorene based soluble conjugated polymers, flexible side chains were attached at different positions of the conjugated polymers. Three soluble polymers PSiF-D(OT) DFBT, PSiF-TTDFBT, and PDOSiF-DTDFBT were prepared and used as donor materials for polymer solar cells. PSiF-D(OT) DFBT exhibits a band gap of 2.06 eV with a deep HOMO of -5.64 eV. PSiF-TTDFBT shows a band gap of 1.75 eV with the HOMO of -5.23 eV. PDOSiF-DTDFBT is of a band gap of 1.86 eV with the HOMO level of -5.37 eV. Among these three polymers, PDOSiF-DTDFBT shows the highest field effect transistor (FET) hole mobility up to 3.31 x 10(-2) cm(2) V-1 s(-1), PDOSiFDTDFBT: PC71BM blend films show the highest SCLC mobility up to 5.10 x 10(4) cm(2) V-1 s(-1), and polymer solar cells (PSCs) with the blend of PDOSiF-DTDFBT: PC71BM (1 : 1, by weight) as the active layer gave a power conversion efficiency (PCE) of 4.03% with an open circuit voltage (V-oc) of 0.73 V, a short circuit current (J(sc)) of 8.55 mA cm(-2), and a fill factor (FF) of 0.65. Our studies also reveal the structureproperty relationship of 2,7-linked silafluorene and 5,6-difluorobenzothiadiazole based conjugated polymers.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000337786900008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/50619]
专题	中国科学院化学研究所
通讯作者	Li, Cuihong
作者单位	1.Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Guangwu,Kang, Chong,Gong, Xue,et al. 5,6-Difluorobenzothiadiazole and silafluorene based conjugated polymers for organic photovoltaic cells[J]. JOURNAL OF MATERIALS CHEMISTRY C,2014,2(26):5116-5123.
APA	Li, Guangwu.,Kang, Chong.,Gong, Xue.,Zhang, Jicheng.,Li, Weiwei.,...&Bo, Zhishan.(2014).5,6-Difluorobenzothiadiazole and silafluorene based conjugated polymers for organic photovoltaic cells.JOURNAL OF MATERIALS CHEMISTRY C,2(26),5116-5123.
MLA	Li, Guangwu,et al."5,6-Difluorobenzothiadiazole and silafluorene based conjugated polymers for organic photovoltaic cells".JOURNAL OF MATERIALS CHEMISTRY C 2.26(2014):5116-5123.