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Issue 6, 2016
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Design principles for block polymer organic double heterojunction solar cells

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Abstract

An organic double heterojunction photovoltaic device is described and the limits of its power conversion efficiency are investigated via numerical calculations. In the absence of exciton binding energy, fully conjugated block polymer devices exhibit power conversion efficiencies slightly exceeding the Shockley–Queisser limit. As exciton binding energy increases, a decrease in efficiency occurs, but remains over 20% for binding energies less than 0.5 eV. Further calculations show that devices require a high degree of phase purity to leverage the full benefit of the double heterojunction structure. Synthetic targets are identified and their maximum efficiency is calculated based on experimentally measured energy levels, leading to a generalized structural motif.

Graphical abstract: Design principles for block polymer organic double heterojunction solar cells

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Publication details

The article was received on 08 Aug 2016, accepted on 16 Sep 2016 and first published on 16 Sep 2016


Article type: Communication
DOI: 10.1039/C6MH00293E
Citation: Mater. Horiz., 2016,3, 575-580
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    Design principles for block polymer organic double heterojunction solar cells

    M. P. J. Hutnan and L. G. Kaake, Mater. Horiz., 2016, 3, 575
    DOI: 10.1039/C6MH00293E

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