High-Performance As-Cast Nonfullerene Polymer Solar Cells with Thicker Active Layer and Large Area Exceeding 11% Power Conversion Efficiency

被引：234

作者：

Fan, Qunping ^{[1
]}

Wang, Yan ^{[1
]}

Zhang, Maojie ^{[1
]}

Wu, Bo ^{[2
]}

Guo, Xia ^{[1
]}

Jiang, Yufeng ^{[3
]}

Li, Wanbin ^{[1
]}

Guo, Bing ^{[1
]}

Ye, Chennan ^{[1
]}

Su, Wenyan ^{[1
]}

Fang, Jin ^{[1
]}

Ou, Xuemei ^{[1
]}

Liu, Feng ^{[4
]}

Wei, Zhixiang ^{[5
]}

Sum, Tze Chien ^{[2
]}

Russell, Thomas P. ^{[3
]}

Li, Yongfang ^{[1
,6
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, State & Local Joint Engn Lab Novel Funct Polymer, Suzhou 215123, Peoples R China

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[3] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

[4] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China

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

[6] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, CAS Res Educ Ctr Excellence Mol Sci, Beijing 100190, Peoples R China

来源：

ADVANCED MATERIALS | 2018年 / 30卷 / 06期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

large area; nonfullerene polymer solar cells; thicker active layer; wide-bandgap polymer donor; without extra treatments; SMALL-MOLECULE ACCEPTOR; RING ELECTRON-ACCEPTOR; FULLERENE; DONOR; OPTIMIZATION; SOLVENT; VOLTAGE; ENABLES; WEIGHT; UNIT;

D O I：

10.1002/adma.201704546

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, a nonfullerene polymer solar cell (PSC) based on a wide bandgap polymer donor PM6 containing fluorinated thienyl benzodithiophene (BDT-2F) unit and a narrow bandgap small molecule acceptor 2,2'-((2Z,2'Z)-((4,4,9,9-tetrahexyl-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (IDIC) is developed. In addition to matched energy levels and complementary absorption spectrum with IDIC, PM6 possesses high crystallinity and strong - stacking alignment, which are favorable to charge carrier transport and hence suppress recombination in devices. As a result, the PM6:IDIC-based PSCs without extra treatments show an outstanding power conversion efficiency (PCE) of 11.9%, which is the record value for the as-cast PSC devices reported in the literature to date. Moreover, the device performances are insensitive to the active layer thickness (approximate to 95-255 nm) and device area (0.20-0.81 cm(2)) with PCEs of over 11%. Besides, the PM6:IDIC-based flexible PSCs with a large device area of 1.25 cm(2) exhibit a high PCE of 6.54%. These results indicate that the PM6:IDIC blend is a promising candidate for future roll-to-roll mass manufacturing and practical application of highly efficient PSCs.

引用

页数：7

共 47 条

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