Synthesis, characterization and photovoltaic performances of D-A copolymers based on BDT and DBPz: the largely improved performance caused by additional thiophene blocks

被引：32

作者：

Li, Shuang ^{[1
]}

Zhao, Baofeng ^{[2
]}

He, Zhicai ^{[2
]}

Chen, Su'an ^{[1
]}

Yu, Jian ^{[1
]}

Zhong, Aoshu ^{[1
]}

Tang, Runli ^{[1
]}

Wu, Hongbin ^{[2
]}

Li, Qianqian ^{[1
]}

Qin, Jingui ^{[1
]}

Li, Zhen ^{[1
]}

机构：

[1] Wuhan Univ, Hubei Key Lab Organ & Polymer Optoelect Mat, Dept Chem, Wuhan 430072, Peoples R China

[2] S China Univ Technol, Coll Mat Sci, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 14期

基金：

美国国家科学基金会;

关键词：

POLYMER SOLAR-CELLS; LOW-BANDGAP POLYMERS; DONOR-ACCEPTOR COPOLYMERS; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYMERS; ORGANIC PHOTOVOLTAICS; TANDEM POLYMER; BENZODITHIOPHENE; DENSITY; EFFICIENCY;

D O I：

10.1039/c3ta01305g

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：

Two new low bandgap copolymers, PBDT-DBPz and PBDT-DTDBPz, were prepared, in which the only difference was the additional added thiophene bridge between the BDT donor unit and DBPz acceptor unit for PBDT-DTDBPz. In addition to the improvements of UV-vis absorption and hole mobility, the PSC based on PBDT-DTDBPz:PC71BM demonstrated a power conversion efficiency of 4.75%, much higher than that of the device based on PBDT-DBPz:PC71BM (0.46%), under the same experimental conditions.

引用

页码：4508 / 4515

页数：8

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