5 years ago

Bifacial Perovskite Solar Cells Featuring Semitransparent Electrodes

Bifacial Perovskite Solar Cells Featuring Semitransparent Electrodes
Hao-Wu Lin, Chien-Yu Chen, Karunakara Moorthy Boopathi, Chih-Wei Chu, Chao-Sung Lai, Chintam Hanmandlu
Inorganic–organic hybrid perovskite solar cells (PSCs) are promising devices for providing future clean energy because of their low cost, ease of fabrication, and high efficiencies, similar to those of silicon solar cells. These materials have been investigated for their potential use in bifacial PSCs, which can absorb light from both sides of the electrodes. Here, we fabricated bifacial PSCs featuring transparent BCP/Ag/MoO3 rear electrodes, which we formed through low-temperature processing using thermal evaporation methods. We employed a comprehensive optical distribution program to calculate the distributions of the optical field intensities with constant thicknesses of the absorbing layer in the top electrode configuration. The best PSC having a transparent BCP/Ag/MoO3 electrode achieved PCEs of 13.49% and 9.61% when illuminated from the sides of the indium tin oxide and BCP/Ag/MoO3 electrodes, respectively. We observed significant power enhancement when operating this PSC using mirror reflectors and bifacial light illumination from both sides of the electrodes.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b06607

DOI: 10.1021/acsami.7b06607

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