A High-Performance D-A Copolymer Based on Dithieno[3,2-b:2′,3′-d]Pyridin-5(4H)-One Unit Compatible with Fullerene and Nonfullerene Acceptors in Solar Cells

被引：93

作者：

An, Mingwei ^{[1
,2
]}

Xie, Fangyuan ^{[2
,3
]}

Geng, Xinjian ^{[2
]}

Zhang, Jianqi ^{[2
]}

Jiang, Jiaxing ^{[3
]}

Lei, Zhongli ^{[1
]}

He, Dan ^{[2
]}

Xiao, Zuo ^{[2
]}

Ding, Liming ^{[2
]}

机构：

[1] Shaanxi Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710062, Peoples R China

[2] Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China

[3] Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710062, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2017年 / 7卷 / 14期

基金：

中国国家自然科学基金;

关键词：

EFFICIENT FULLERENE; PHOTOVOLTAIC PERFORMANCE; ORGANIC PHOTOVOLTAICS; BUILDING-BLOCK; POLYMER; DESIGN; LAYER;

D O I：

10.1002/aenm.201602509

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Development of high-performance donor-acceptor (D-A) copolymers is vital in the research of polymer solar cells (PSCs). In this work, a low-bandgap D-A copolymer based on dithieno[3,2-b:2',3'-d]pyridin-5(4H)-one unit (DTP), PDTP4TFBT, is developed and used as the donor material for PSCs with PC71BM or ITIC as the acceptor. PDTP4TFBT:PC71BM and PDTP4TFBT: ITIC solar cells give power conversion efficiencies (PCEs) up to 8.75% and 7.58%, respectively. 1,8-Diiodooctane affects film morphology and device performance for fullerene and nonfullerene solar cells. It inhibits the active materials from forming large domains and improves PCE for PDTP4TFBT:PC71BM cells, while it promotes the aggregation and deteriorates performance for PDTP4TFBT:ITIC cells. The ternary-blend cells based on PDTP4TFBT:PC71BM: ITIC (1:1.2:0.3) give a decent PCE of 9.20%.

引用

页数：6

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