5,6-Bis(decyloxy)-2,1,3-benzooxadiazole-Based Polymers with Different Electron Donors for Bulk-Heterojunction Solar Cells

被引：50

作者：

Ding, Ping ^{[1
]}

Zhong, Chengmei ^{[2
]}

Zou, Yingping ^{[1
]}

Pan, Chunyue ^{[1
]}

Wu, Hongbin ^{[2
]}

Cao, Yong ^{[2
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] S China Univ Technol, Key Lab Specially Funct Mat MoE, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 32期

基金：

中国国家自然科学基金; 国家教育部博士点专项基金资助;

关键词：

PHOTOVOLTAIC PROPERTIES; CONJUGATED POLYMERS; BANDGAP; PERFORMANCE; COPOLYMERS; MOBILITY; FIELD; BENZODITHIOPHENE;

D O I：

10.1021/jp2031434

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：

Four donor-acceptor (D-A) alternating low bandgap photovoltaic copolymers, 5,6-bisalkoxylbenzooxadiazole (BX) as an electron-deficient moiety and benzodithiophene or 2,7-carbazole or fluorene as an electron-rich unit, were synthesized and well characterized. The copolymers possess good solubilities, high thermal stabilities, broad absorption, as well as low bandgap ranging from 1.52 to 1.73 eV. Their electronic and photovoltaic properties can be easily tuned by incorporating different donor moieties into the polymer back-bone. The HOMO levels of the copolymers were determined by the electron-donating segments, while their LUMO levels were mainly dominated by the BX unit. The preliminary photovoltaic device based on PBDT-DTBX:PC61BM gives a PCE value of 2.9%, which shows that BX probably is a promising electron-accepting building block in organic electronics.

引用

页码：16211 / 16219

页数：9

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