Synthesis and photovoltaic properties of benzotriazole-based donor-acceptor copolymers

被引：12

作者：

Yang, Miao ^{[1
]}

Chen, Xuewen ^{[1
]}

Zou, Yingping ^{[1
]}

He, Yuehui ^{[2
]}

Pan, Chunyue ^{[1
]}

Xiao, Lu ^{[1
]}

Liu, Bo ^{[2
]}

机构：

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

[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2013年 / 48卷 / 08期

基金：

中国博士后科学基金;

关键词：

POLYMER SOLAR-CELLS; RATIONAL DESIGN; ELECTRON-DONORS; BANDGAP; BENZODITHIOPHENE; EFFICIENCY; DERIVATIVES;

D O I：

10.1007/s10853-012-7096-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two new D-A copolymers containing benzotriazole (BTz) acceptor unit and different donor units of benzodithiophene (BDT) and 2,7-carbazole, PBDT-DTBTz and PC-DTBTz, were synthesized for the application as donor materials in polymer solar cells (PSCs). By changing the donor units, the band gaps and the highest occupied molecular orbital (HOMO) energy levels of the copolymers could be finely tuned. PC-DTBTz exhibited the lower HOMO energy level of -5.34 eV, and the lower HOMO energy level can lead to a higher open-circuit voltage (V (oc)) of 0.73 V in PC-DTBTz-based devices. The PCEs of the PSCs based on PBDT-DTBTz and PC-DTBTz blends with [6,6]-phenyl-C-61 butyric acid methyl ester (PC61BM) were 1.55 and 1.33 %, respectively, under the illumination of AM1.5, 100 mW/cm(2).

引用

页码：3177 / 3184

页数：8

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