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Vol. 25 No. 4 (2013): Vol 25 Issue 4

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Substituent Effect on Hole Mobility of Conjugated Polymers in Photovoltaic Cells

https://doi.org/10.14233/ajchem.2013.13386
Hui Cao
Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environment Science and Technology, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, P.R. China
Qun Zhang
Department of Theoretical Chemistry and Biology, KTH Royal Institute of Technology, School of Biotechnology, S-106 91 Stockholm, Sweden
Chaozhi Zhang
Department of Chemistry, School of Environment Science and Technology, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, P.R. China

Corresponding Author(s) : Hui Cao

yccaoh@hotmail.com

Asian Journal of Chemistry, Vol. 25 No. 4 (2013): Vol 25 Issue 4

Abstract

In this work, we have theoretically investigated the substituent effect on hole mobility of the conjugated alternating polymers typically applied in photovoltaic cells. We found that both linear and nonlinear behaviour of binding energy of polarons with respect to their extension size in two series of polymers. The resistances in the process of polaron's jumping between polymer chains are thus different. The experimental relative hole mobility of two kinds of polymers are well explained. Analysis of substituent effect provides insight into obtaining better hole-transport conjugated polymers in future.

Keywords

Substituent effect Hole mobility Binding energy Photovoltaic cells
Cao, H., Zhang, Q., & Zhang, C. (2012). Substituent Effect on Hole Mobility of Conjugated Polymers in Photovoltaic Cells. Asian Journal of Chemistry, 25(4), 2177–2181. https://doi.org/10.14233/ajchem.2013.13386
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