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Issue 22, 2011
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Current trends in the optimization of low band gap polymers in bulk heterojunction photovoltaic devices

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Abstract

Applications of low band gap polymers in solar cells have attracted intense attention due to their energetic overlap with the solar spectrum. Recently, low band gap organic photovoltaic (OPV) materials have shown an unprecedented ∼8% efficiency in solar cell devices. Although the energetic alignment is crucial in the optimization of these materials, the structural and kinetic effects are also important factors in the overall device performance. Here we focus on the morphology and charge separation kinetics of several energetically similar low band gap materials. Special emphasis will be on two polymers, PF and PTB, in this report.

Graphical abstract: Current trends in the optimization of low band gap polymers in bulk heterojunction photovoltaic devices

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Publication details

The article was received on 18 Dec 2010, accepted on 16 Feb 2011 and first published on 07 Apr 2011


Article type: Highlight
DOI: 10.1039/C0JM04433D
Citation: J. Mater. Chem., 2011,21, 7849-7857
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    Current trends in the optimization of low band gap polymers in bulk heterojunction photovoltaic devices

    J. M. Szarko, J. Guo, B. S. Rolczynski and L. X. Chen, J. Mater. Chem., 2011, 21, 7849
    DOI: 10.1039/C0JM04433D

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