New Selenophene-Based Low-Band Gap Conjugated Polymers for Organic Photovoltaics

作者：Chang Ching Chih; Chen Chih Ping^*; Chou Ho Hsiu; Liao Chuang Yi; Chan Shu Hua; Cheng Chien Hong

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2013, 51(21): 4550-4557.

DOI：10.1002/pola.26871

• atomic force microscopy (AFM)
• conducting polymers
• conjugated polymers
• low-band gap
• optoelectronic properties
• organic solar cell
• selenophene

Low-band gap selenophene-based polymers were synthesized. Their optoelectronic and photovoltaic properties and space-charge limited currents were compared with those of the related thiophene-based polymers. The band gaps of the Se-based derivatives were approximately 0.05-0.12 eV lower than those of their thiophene counterparts. Organic photovoltaic (OPV) devices based on the blends of these polymers and 1-(3-methoxycarbonyl)propyl-1-phenyl-[6,6]-C-71 (PC71BM) were fabricated, and the maximum power conversion efficiency of the OPV device based on PSPSBT and PC71BM was 3.1%with a short-circuit current density (J(sc)) of 9.3 mA cm(-2), an open-circuit voltage (V-oc) of 0.79 V, and a fill factor of 0.42under AM 1.5 G illumination (100 mW cm(-2)).

• 出版日期2013-11-1
• 单位清华大学