Polymer Engineering Faculty Research
Title
Solvent Effect Leading to High Performance of Bulk Heterojunction Polymer Solar Cells by Novel Polysilafluorene Derivatives
Document Type
Article
Publication Date
1-18-2011
Abstract
An amount of 3% of power conversion efficiency (PCE) was observed from bulk heterojunction (BHJ) polymer solar cells (PSCs) using a novel silole-containing polymer, poly(2,7-(9′,9′-silafluorene)-alt-5′,5′-(4,7-bis(3′-hexyl-2,2′-bithiophen-5-yl)benzo[c][1,2,5]thiadiazole)) (PSiF-BBT) blended with a fullerene derivative, [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). Moreover, PCEs and short-circuit currents (Jsc) of BHJ PSCs processed from chloroform solution were 50% increased from that of chlorobenzene solution. The studies of optical and electric properties and morphology information obtained from atomic force microscopy (AFM) and transmission electron microscopy (TEM) showed that the absorption coefficient of polymer thin films was enhanced, and the formed polymer-rich fibrillar domains were responsible for the improved device performance.
Publication Title
The Journal of Physical Chemistry C
Volume
115
Issue
5
First Page
2314
Last Page
2319
Recommended Citation
Cai, Wanzhu; Wang, Ming; Zhang, Jie; Wang, Ergang; Yang, Tingbing; He, Chao; Moon, Ji Sun; Wu, Hongbin; Gong, Xiong; and Cao, Yong, "Solvent Effect Leading to High Performance of Bulk Heterojunction Polymer Solar Cells by Novel Polysilafluorene Derivatives" (2011). Polymer Engineering Faculty Research. 1187.
https://ideaexchange.uakron.edu/polymerengin_ideas/1187