Steric-Hindrance Modulation toward High-Performance 1,3-Bis(thieno[3,4-b]thiophen-6-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-Based Polymer Solar Cells with Enhanced Open-Circuit Voltage

doi:10.1002/aelm.201700225

CORC > 化学研究所 > 中国科学院化学研究所

	Steric-Hindrance Modulation toward High-Performance 1,3-Bis(thieno[3,4-b]thiophen-6-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-Based Polymer Solar Cells with Enhanced Open-Circuit Voltage
	Zhang, Cheng 1,2; Zhou, Zichun 1,2; Wu, Hao 1,2; Liu, Feng 3,4; Zhu, Xiaozhang 1,2
刊名	ADVANCED ELECTRONIC MATERIALS
	2017-11-01
卷号	3 期号:11
关键词	Open-circuit Voltage Polymer Solar Cells Power Conversion Efficiency Steric-hindrance Modulation
ISSN号	2199-160X
DOI	10.1002/aelm.201700225
英文摘要	Solution-processed bulk-heterojunction polymer solar cells (PSCs) are indispensable in photovoltaics. -Conjugated donor-acceptor copolymers as electron donors have become the cornerstone as the most intensively studied topic in this field. Thieno[3,4-c]pyrrole-4,6-dione (TPD) is one of the most commonly used electron-withdrawing moieties. Based on TPD, a new building block, 1,3-bis(thieno[3,4-b]thiophen-6-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione (TBTT), is designed and a novel low-bandgap TPD-copolymer is developed with a power conversion efficiency (PCE) up to 7.5% with a low open-circuit voltage (V-oc) of 0.633 V when utilizing PC71BM as electron acceptor. To promote the performance of TBTT-based polymers, four conjugated copolymers are designed and synthesized based on TBTT and benzodithiophene (BDT) building blocks by regulating their steric hindrance with side alkyl chains on BDT moiety. PSCs based on polymer P4 with an additional n-hexyl side chain blended with PC71BM deliver a high PCE of 9.1% with a V-oc of 0.78 V increased by 24%, which is among the highest in TPD-based polymers. The study provides new insights into the molecular design and synthesis of high-performance photovoltaic materials.
语种	英语
出版者	WILEY
WOS记录号	WOS:000416047700017
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45099]
专题	中国科学院化学研究所
通讯作者	Zhu, Xiaozhang
作者单位	1.Chinese Acad Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China 4.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Zhang, Cheng,Zhou, Zichun,Wu, Hao,et al. Steric-Hindrance Modulation toward High-Performance 1,3-Bis(thieno[3,4-b]thiophen-6-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-Based Polymer Solar Cells with Enhanced Open-Circuit Voltage[J]. ADVANCED ELECTRONIC MATERIALS,2017,3(11).
APA	Zhang, Cheng,Zhou, Zichun,Wu, Hao,Liu, Feng,&Zhu, Xiaozhang.(2017).Steric-Hindrance Modulation toward High-Performance 1,3-Bis(thieno[3,4-b]thiophen-6-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-Based Polymer Solar Cells with Enhanced Open-Circuit Voltage.ADVANCED ELECTRONIC MATERIALS,3(11).
MLA	Zhang, Cheng,et al."Steric-Hindrance Modulation toward High-Performance 1,3-Bis(thieno[3,4-b]thiophen-6-yl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-Based Polymer Solar Cells with Enhanced Open-Circuit Voltage".ADVANCED ELECTRONIC MATERIALS 3.11(2017).