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Issue 59, 2014
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Effects of heteroatom substitution in conjugated heterocyclic compounds on photovoltaic performance: from sulfur to tellurium

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Abstract

We report a general strategy for fine-tuning the bandgap of donor–acceptor–donor based organic molecules by modulating the electron-donating ability of the donor moiety by changing the benzochalcogenophene donor groups from benzothiophenes to benzoselenophenes to benzotellurophenes. These molecules show red-shifts in absorption and external quantum efficiency maxima from sulfur to selenium to tellurium. In bulk heterojunction solar cell devices, the benzoselenophene derivative shows a power conversion efficiency as high as 5.8% with PC61BM as the electron acceptor.

Graphical abstract: Effects of heteroatom substitution in conjugated heterocyclic compounds on photovoltaic performance: from sulfur to tellurium

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Publication details

The article was received on 12 Mar 2014, accepted on 30 Apr 2014 and first published on 01 May 2014


Article type: Communication
DOI: 10.1039/C4CC01862A
Citation: Chem. Commun., 2014,50, 7964-7967
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    Effects of heteroatom substitution in conjugated heterocyclic compounds on photovoltaic performance: from sulfur to tellurium

    Y. S. Park, T. S. Kale, C.-Y. Nam, D. Choi and R. B. Grubbs, Chem. Commun., 2014, 50, 7964
    DOI: 10.1039/C4CC01862A

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