Tuning the frontier molecular orbital energy levels of n-type conjugated copolymers by using angular-shaped naphthalene tetracarboxylic diimides, and their use in all-polymer solar cells with high open-circuit voltages

被引：25

作者：

Chen, Shan-Ci ^{[1
]}

Zheng, Qingdong ^{[1
]}

Zhang, Qikai ^{[1
]}

Cai, Dongdong ^{[1
]}

Wang, Jinyun ^{[1
]}

Yin, Zhigang ^{[1
]}

Tang, Changquan ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Struct Chem, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2013年 / 51卷 / 09期

基金：

美国国家科学基金会;

关键词：

all-polymer solar cells; conjugated polymers; copolymerization; high performance polymers; monomers; naphthalene diimides; open circuit voltages; organic photovoltaics; renewable resources; thin films; FIELD-EFFECT TRANSISTORS; HIGH-PERFORMANCE; THIOPHENE; POLY(3-HEXYLTHIOPHENE); MORPHOLOGY; TRANSPORT; ALIGNMENT;

D O I：

10.1002/pola.26580

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An angular-shaped naphthalene tetracarboxylic diimide (NDI) was designed and synthesized as a new building block for n-type conjugated polymers to tune their energy levels. Three n-type copolymers incorporating this angular-shaped NDI as the acceptor moiety were obtained by Stille coupling reactions and had number average molecular weights of 18.773.0 kDa. All-polymer bulk-heterojunction solar cells made from blends of these polymers with poly(3-hexylthiophene) gave a power conversion efficiency up to 0.32% and exhibited an open-circuit voltage (Voc) up to 0.94 V due to their relative high-lying lowest unoccupied molecular orbital energy levels. The high Voc of 0.94 V is higher than that of solar cells based on linear-shaped NDI-containing polymers (<0.6 V). The results indicate that the angular-shaped NDI is a promising building block for constructing nonfullerene polymer acceptors for solar cells with high open-circuit voltages. (c) 2013 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013, 51, 1999-2005

引用

页码：1999 / 2005

页数：7

共 51 条

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