Low-bandgap poly(4H-cyclopenta[def]phenanthrene) derivatives with 4,7-dithienyl-2,1,3-benzothiadiazole unit for photovoltaic cells

被引：32

作者：

Kim, Jinwoo ^{[1
,2
]}

Park, Sung Heum ^{[8
]}

Cho, Shinuk ^{[3
]}

Jin, Youngeup ^{[6
]}

Kim, Jaehong ^{[1
,2
]}

Kim, Il ^{[4
]}

Lee, Jin Sook ^{[5
]}

Kim, Joo Hyun ^{[6
]}

Woo, Han Young ^{[7
]}

Lee, Kwanghee ^{[8
]}

Suh, Hongsuk ^{[1
,2
]}

机构：

[1] Pusan Natl Univ, Dept Chem, Pusan 609735, South Korea

[2] Pusan Natl Univ, Chem Inst Funct Mat, Pusan 609735, South Korea

[3] Univ Calif Santa Barbara, Ctr Polymer & Organ Solids, Santa Barbara, CA 93106 USA

[4] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea

[5] Yonsei Univ, Dept Chem, Seoul 120749, South Korea

[6] Pukyong Natl Univ, Div Appl Chem Engn, Pusan 608739, South Korea

[7] Pusan Natl Univ, Dept Nanomat Engn, Miryang 627706, South Korea

[8] Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea

来源：

POLYMER | 2010年 / 51卷 / 02期

关键词：

Polymer solar cell; Cyclopentaphenanthrene; Benzothiadiazole; POLYMER SOLAR-CELLS; STABILIZED BLUE EMISSION; LIGHT-EMITTING-DIODES; ALTERNATING COPOLYMERS; POLYFLUORENE; BACKBONE; DEVICES;

D O I：

10.1016/j.polymer.2009.12.009

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of conjugated polymer bearing 4H-cyclopenta[def]phenanthrene (CPP) unit have been synthesized and was evaluated in bulk heterojunction solar cell. The alternating copolymers with CPP unit were incorporated with 4,7-dithienyl-2,1,3-benzothiadiazole (DTBT) unit by Suzuki conditions. The newly synthesized copolymers, poly(2,6-((4,4-bis(2-ethylhexyl)-4H-cyclopenta[def]phenanthrene))-alt-(4,7-((2-thienyl)-2,1,3-benzothiadiazole))) (PCPP-DTBT), and poly(2,6-(4,4-bis(4-((2-ethylhexyl)oxy)phenyl)-4H-cyclopenta[def]phenanthrene)-alt-(4,7-((2-thienyl)-2,1,3-benzothiadiazole))) (PBEHPCPP-DTBT), contain dialkyl and bis(alkoxyphenyl) groups in the CPP unit, respectively. The HOMO-LUMO energy bandgaps of these materials, estimated from UV-vis spectroscopy and cyclic voltammetry (CV), were 2.00 eV for PCPP-DTBT and 1.80 eV for PBEHPCPP-DTBT. Bulk heterojunction solar cells based on the blends of the polymers with [6,6]phenyl-C-71-butyric acid methyl ester (PC71BM) gave power conversion 2 efficiencies as 1.00% for PCPP-DTBT and 1.12% for PBEHPCPP-DTBT under AM 1.5, 100 mW/cm(2) (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：390 / 396

页数：7

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