Designing a thiophene-fused DPP unit to build an A-D-A molecule for   solution-processed solar cells

doi:10.1039/c5ta00294j

CORC > 北京大学 > 工学院

	Designing a thiophene-fused DPP unit to build an A-D-A molecule for solution-processed solar cells
	Chen, Bing ; Yang, Yang ; Cheng, Pei ; Chen, Xingguo ; Zhan, Xiaowei ; Qin, Jingui
刊名	journal of materials chemistry a
	2015
关键词	POWER CONVERSION EFFICIENCY HIGH PHOTOVOLTAIC EFFICIENCY BENZODITHIOPHENE UNIT DONOR MOLECULES PERFORMANCE DIKETOPYRROLOPYRROLE MORPHOLOGY 10-PERCENT POLYMERS TRIPHENYLAMINE
DOI	10.1039/c5ta00294j
英文摘要	A novel thiophene-fused diketopyrrolopyrrole unit (7H-pyrrolo[ 3,4-a] thieno[ 3,2-g] indolizine-7,10(9H)dione, PTI) has been designed as an electron acceptor with the 4,4'-bis-(2-ethylhexyl)-dithieno[3,2-b:20,3'-d] silole (DTS) unit as a donor to construct a new kind of A-D-A molecule (DTS-2TPTI) for solution-processed solar cells. DTS-2TPTI exhibits excellent thermal stability with the decomposition temperature over 400 degrees C and shows strong absorption from 550 to 750 nm with a high molar extinction coefficient. The optical band gap (E-g) estimated from the absorption edge of the thin film is about 1.44 eV. The highest occupied molecular orbital energy level of DTS-2TPTI determined from CV is about -4.99 eV. Through optimizing the photovoltaic performances of devices, the DTS-2TPTI/PC71BM-based solution processed bulk-heterojunction solar cell with 0.5% DIO as a solvent additive exhibits the best photovoltaic performance with a J(SC) of 11.28 mA cm(-2), V-OC of 0.64 V, FF of 59.5% and power conversion efficiency (PCE) of 4.28%, indicating that the PTI unit can act as an efficient acceptor moiety to construct D-A small molecules for OPVs.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000351552300025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 3; ARTICLE; xgchen@whu.edu.cn; xwzhan@pku.edu.cn; 13; 6894-6900; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206468]
专题	工学院
推荐引用方式 GB/T 7714	Chen, Bing,Yang, Yang,Cheng, Pei,et al. Designing a thiophene-fused DPP unit to build an A-D-A molecule for solution-processed solar cells[J]. journal of materials chemistry a,2015.
APA	Chen, Bing,Yang, Yang,Cheng, Pei,Chen, Xingguo,Zhan, Xiaowei,&Qin, Jingui.(2015).Designing a thiophene-fused DPP unit to build an A-D-A molecule for solution-processed solar cells.journal of materials chemistry a.
MLA	Chen, Bing,et al."Designing a thiophene-fused DPP unit to build an A-D-A molecule for solution-processed solar cells".journal of materials chemistry a (2015).