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Issue 47, 2017
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Photo-degradation of high efficiency fullerene-free polymer solar cells

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Polymer solar cells are a promising technology for the commercialization of low cost, large scale organic solar cells. With the evolution of high efficiency (>13%) non-fullerene polymer solar cells, the stability of the cells has become a crucial parameter to be considered. Among the several degradation mechanisms of polymer solar cells, burn-in photo-degradation is relatively less studied. Herein, we present the first systematic study of photo-degradation of novel PBDB-T:ITIC fullerene-free polymer solar cells. The thermally treated and as-prepared PBDB-T:ITIC solar cells were exposed to continuous 1 sun illumination for 5 hours. The aged devices exhibited rapid losses in the short-circuit current density and fill factor. The severe short-circuit current and fill factor burn in losses were attributed to trap mediated charge recombination, as evidenced by an increase in Urbach energy for aged devices.

Graphical abstract: Photo-degradation of high efficiency fullerene-free polymer solar cells

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Publication details

The article was received on 18 Aug 2017, accepted on 08 Nov 2017 and first published on 08 Nov 2017

Article type: Paper
DOI: 10.1039/C7NR06151J
Citation: Nanoscale, 2017,9, 18788-18797

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    Photo-degradation of high efficiency fullerene-free polymer solar cells

    M. B. Upama, M. Wright, M. A. Mahmud, N. K. Elumalai, A. Mahboubi Soufiani, D. Wang, C. Xu and A. Uddin, Nanoscale, 2017, 9, 18788
    DOI: 10.1039/C7NR06151J

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