(E)-1,2-Di(thiophen-2-yl)ethene based high mobility polymer for efficient photovoltaic devices without any post treatment

doi:10.1039/c6ra13970a

QIBEBT-IR > 先进有机功能材料研究组

	(E)-1,2-Di(thiophen-2-yl)ethene based high mobility polymer for efficient photovoltaic devices without any post treatment
	Ren, Junzhen 1; Zhang, Yongchao 2; Liu, Fushuai 1; Yan, Yan 3; Qiu, Meng 2; Roy, V. A. L.3; Zheng, Huilin 1; Sun, Mingliang 1; Yang, Renqiang 2
	2016
发表期刊	RSC ADVANCES
卷号	6 期号:72 页码:68049-68057
摘要	In order to investigate the effect of an (E)-1,2-di(thiophen-2-yl)ethene (TVT) unit on the hole mobility and photovoltaic properties of dithienyl-difluorobenzothiadiazole (DTBT) based polymers, two conjugated polymers PDT-DTBT-DT (thiophene backboned) and PTVT-DTBT-DT (TVT backboned) were synthesized. Compared to PDT-DTBT-DT, the backbone conformation of PTVT-DTBT-DT could be well modulated by the TVT unit, leading to an extended conjugation length and strengthened intermolecular interaction. Interestingly, it's found that the ultraviolet-visible (UV-vis) absorption peaks of the PTVT-DTBT-DT film was blue-shifted compared to that of the solution. The organic field-effect transistor (OFETs) characterization showed that PTVT-DTBT-DT possessed a high hole mobility of 0.12 cm(2) V-1 s(-1), which was higher than that of the counterpart PDT-DTBT-DT (0.04 cm(2) V-1 s(-1)). Through simplified device optimization without any additives and annealing treatment, a power conversion efficiency (PCE) of 7.86% was achieved for PTVT-DTBT-DT with a short-circuit current density (Jsc) of 16.33 mA cm(-2) and a fill factor (FF) of 68.92%, which is higher the PCE of 7.29% of PDT-DTBT-DT with a Jsc of 15.60 mA cm(-2) and a FF of 66.62%. The PCE of 7.86% is among the highest PCEs reported for devices fabricated without any additives and thermal annealing treatment. The results revealed that PTVT-DTBT-DT as an ideal conjugated polymer could provide a greater possibility for the commercial application of PSCs, especially in terms of low cost and manufacturing convenience.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c6ra13970a
关键词[WOS]	POWER CONVERSION EFFICIENCY ; HETEROJUNCTION SOLAR-CELLS ; HIGH HOLE MOBILITY ; STRONG INTERCHAIN AGGREGATION ; BANDGAP CONJUGATED POLYMER ; FIELD-EFFECT TRANSISTORS ; HIGH-PERFORMANCE ; FLUORINATED BENZOTHIADIAZOLE ; PROCESSING ADDITIVES ; CATHODE INTERLAYER
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	NSFC(21274134 ; 21274161 ; 51573205)
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000380362700069
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/8381
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 3.City Univ Hong Kong, Ctr Super Diamond & Adv Films COSDAF, Hong Kong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Ren, Junzhen,Zhang, Yongchao,Liu, Fushuai,et al. (E)-1,2-Di(thiophen-2-yl)ethene based high mobility polymer for efficient photovoltaic devices without any post treatment[J]. RSC ADVANCES,2016,6(72):68049-68057.
APA	Ren, Junzhen.,Zhang, Yongchao.,Liu, Fushuai.,Yan, Yan.,Qiu, Meng.,...&Yang, Renqiang.(2016).(E)-1,2-Di(thiophen-2-yl)ethene based high mobility polymer for efficient photovoltaic devices without any post treatment.RSC ADVANCES,6(72),68049-68057.
MLA	Ren, Junzhen,et al."(E)-1,2-Di(thiophen-2-yl)ethene based high mobility polymer for efficient photovoltaic devices without any post treatment".RSC ADVANCES 6.72(2016):68049-68057.