Synthesis and photovoltaic properties of donor-acceptor type narrow bandgap copolymers based on benzo[def]carbazole

被引：4
作者：
Geng, ZhongMin [1 ]
Yasuda, Takeshi [2 ,3 ]
Kijima, Masashi [2 ,4 ,5 ,6 ]
机构：
[1] Univ Tsukuba, Inst Mat Sci, Grad Sch Pure & Appl Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058573, Japan
[2] Univ Tsukuba, Tsukuba Res Ctr Interdisciplinary Mat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058573, Japan
[3] Natl Inst Mat Sci NIMS, Photovolta Mat Unit, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
[4] Univ Tsukuba, Fac Pure & Appl Sci, Div Mat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058573, Japan
[5] Univ Tsukuba, Algae Biomass & Energy Syst R&D Ctr, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058573, Japan
[6] Natl Inst Adv Ind Sci & Technol, Interdisciplinary Res Ctr Catalyt Chem, 1-1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan
来源：
SYNTHETIC METALS | 2016年 / 220卷
关键词：
Benzo[def]carbazole; Donor-acceptor; Narrow band gap; Conjugated polymer; Organic photovoltaic cells; ORGANIC SOLAR-CELLS; THIN-FILM TRANSISTORS; HIGH-PERFORMANCE; DIKETOPYRROLOPYRROLE; CARBAZOLE; POLYMERS; DESIGN; UNITS;
D O I：
10.1016/j.synthmet.2016.07.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Three kinds of narrow bandgap copolymers were synthesized by combination of a donor unit of benzo [def]carbazole with each acceptor unit of benzothiadiazole, thienopyrrole-4,6-dione, and 1,4-diketopyrrolopyrrole. Basic properties of these polymers were investigated for applications in bulk heterojunction polymer solar cells. These copolymers had broad absorption bands in UV and visible regions from 350 to 800 nm that overlapped with the major region of the solar spectrum, and their optical band gaps were in the range of 1.68-2.11 eV. The highest occupied molecular orbitals of these copolymers were situated in the range of -5.22 eV to -5.34 eV, which could provide good air stability and high open circuit voltages in photovoltaic applications. Initial performances of these copolymers in bulk heterojunction photovoltaic devices revealed that the power conversion efficiencies exceeded 1.4% under irradiation of AM 1.5 solar-simulated light (100 mW cm(-2)). (C) 2016 Elsevier B.V. All rights reserved.
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收藏
页码：440 / 447
页数：8
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