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Semitransparent Polymer Solar Cells with Optical Adjusting Layer


Both efficiency and transparency are the most essential issues for semitransparent polymer solar cells (ST-PSCs), which must be compatible to facilitate and advance commercial application in such as photovoltaic integration in windows, roofs and other aesthetic buildings. Herein, an optical adjusting layer (OAL) is intentionally introduced poly(3-hexylthiophene) (P3HT): Indene-C60 bisadduct (ICBA)-based ST-PSCs to effectively enhance light absorption by adjusting incident light phase. The shoulder field of incident photon-to-electron conversion efficiency (IPCE) spectra was greatly broadened especially in long wavelengths, resulting in a 22.6 % improvement of power conversion efficiency (PCE) and meanwhile maintaining a 26.1 % of average visible transmittance (AVT). Furthermore, transfer matrix modeling (TMM) was used to analyze the function of OAL by calculating the optical field distribution and absorption in the device. The reflection phase shift induced optical field redistribution results in dramatically enhanced absorption in active layer, which agrees well with experimental results. We believe these findings offer a promising path to develop high-performance ST-PSCs towards practical applications.

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Publication details

The article was received on 05 Jul 2018, accepted on 09 Aug 2018 and first published on 11 Aug 2018

Article type: Paper
DOI: 10.1039/C8TC03289K
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Semitransparent Polymer Solar Cells with Optical Adjusting Layer

    P. Shen, Y. Long, G. Wang, Y. Wang, W. Guo and L. Shen, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC03289K

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