A Versatile Fluoro-Containing Low-Bandgap Polymer for Efficient Semitransparent and Tandem Polymer Solar Cells

被引：6

作者：

Chang, Chih-Yu ^{[1
,2
]}

Zuo, Lijian ^{[1
,3
]}

Yip, Hin-Lap ^{[1
]}

Li, Yongxi ^{[1
]}

Li, Chang-Zhi ^{[1
]}

Hsu, Chain-Shu ^{[2
]}

Cheng, Yen-Ju ^{[2
]}

Chen, Hongzheng ^{[3
]}

Jen, Alex K. -Y. ^{[1
]}

机构：

[1] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

[2] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan

[3] Zhejiang Univ, Zhejiang Calif Int Nanosyst Inst, State Key Lab Silicon Mat, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2013年 / 23卷 / 40期

关键词：

low bandgap polymers; polymer solar cells; tandem solar cells; semitransparent solar cells; organic electronics; PHOTOVOLTAIC CELLS; PERFORMANCE; RECOMBINATION; COPOLYMER; ACCEPTOR; LAYER; FILM;

D O I：

10.1002/adfm201301557

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The versatility of a fluoro-containing low band-gap polymer, poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7-(5-fluoro-2,1,3-benzothia-diazole)] (PCPDTFBT) in organic photovoltaics (OPVs) applications is demonstrated. High boiling point 1,3,5-trichlorobenzene (TCB) is used as a solvent to manipulate PCPDTFBT:[6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) active layer morphology to obtain high-performance single-junction devices. It promotes the crystallization of PCPDTFBT polymer, thus improving the charge-transport properties of the active layer. By combining the morphological manipulation with interfacial optimization and device engineering, the single-junction device exhibits both good air stability and high power-conversion efficiency (PCE, of 6.6%). This represents one of the highest PCE valuesfor cyclopenta[2,1-b;3,4-b']dithiophene (CPDT)-based OPVs. This polymer is also utilized for constructing semitransparent solar cells and double-junction tandem solar cells to demonstrate high PCEs of 5.0% and 8.2%, respectively.

引用

页码：5084 / 5090

页数：7

共 39 条

[1] Fluorinated Copolymer PCPDTBT with Enhanced Open-Circuit Voltage and Reduced Recombination for Highly Efficient Polymer Solar Cells [J].