4,7-Di-2-thienyl-2,1,3-benzothiadiazole with hexylthiophene side chains and a benzodithiophene based copolymer for efficient organic solar cells

doi:10.1039/c5py00199d

QIBEBT-IR > 先进有机功能材料研究组

	4,7-Di-2-thienyl-2,1,3-benzothiadiazole with hexylthiophene side chains and a benzodithiophene based copolymer for efficient organic solar cells
	Ren, Junzhen 1,2; Bao, Xichang 2; Han, Liangliang 2; Wang, Jiuxing 2; Qiu, Meng 2; Zhu, Qianqian 2; Hu, Tong 1,2; Sheng, Ruiying 1,2; Sun, Mingliang 1; Yang, Renqiang 2
	2015
发表期刊	POLYMER CHEMISTRY
卷号	6 期号:24 页码:4415-4423
摘要	In this work, a hexylthiophene substituted thiophene-bridge is used to connect benzodithiophene (BDT) and benzothiadiazole (BT) segments to build a new photovoltaic polymer (PBDT-DTTBT). The highest occupied molecular orbital (HOMO) level of the polymer is decreased by 0.2 eV to -5.47 eV compared to the reference polymer without a hexylthiophene side chain, which may be ascribed to the conformational torsion caused by the steric hindrance from the bulky hexylthiophene side group. The band gap of the polymer shows no obvious change compared to a polymer with a same backbone without a hexylthiophene side chain (around 1.7 eV). Polymer solar cells (PSCs) based on PBDT-DTTBT and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) exhibit a maximum power conversion efficiency (PCE) of 6.19% with an open-circuit voltage (V-oc) of 0.80 V, a short-circuit current density (J(sc)) of 12.72 mA cm(-2) and a fill factor (FF) of 60.97%. The work provides a new method to design new conjugated polymers with a deep HOMO level and a low band gap for high V-oc PSCs.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c5py00199d
关键词[WOS]	POWER CONVERSION EFFICIENCY ; DONOR-ACCEPTOR COPOLYMERS ; OPEN-CIRCUIT VOLTAGE ; LOW-BANDGAP POLYMER ; HIGH-PERFORMANCE ; CONJUGATED POLYMERS ; PROCESSING ADDITIVES ; PHOTOVOLTAIC PERFORMANCE ; CHARGE-TRANSFER ; DERIVATIVES
收录类别	SCI
语种	英语
WOS研究方向	Polymer Science
WOS类目	Polymer Science
WOS记录号	WOS:000356022300009
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/6478
专题	先进有机功能材料研究组
作者单位	1.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Ren, Junzhen,Bao, Xichang,Han, Liangliang,et al. 4,7-Di-2-thienyl-2,1,3-benzothiadiazole with hexylthiophene side chains and a benzodithiophene based copolymer for efficient organic solar cells[J]. POLYMER CHEMISTRY,2015,6(24):4415-4423.
APA	Ren, Junzhen.,Bao, Xichang.,Han, Liangliang.,Wang, Jiuxing.,Qiu, Meng.,...&Yang, Renqiang.(2015).4,7-Di-2-thienyl-2,1,3-benzothiadiazole with hexylthiophene side chains and a benzodithiophene based copolymer for efficient organic solar cells.POLYMER CHEMISTRY,6(24),4415-4423.
MLA	Ren, Junzhen,et al."4,7-Di-2-thienyl-2,1,3-benzothiadiazole with hexylthiophene side chains and a benzodithiophene based copolymer for efficient organic solar cells".POLYMER CHEMISTRY 6.24(2015):4415-4423.