Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.059
Publication date: 30th March 2023
Uniquely designed by controlling the flow of light, photonic crystals (PC) have attracted considerable interest because of their attractive aesthetical aspects. Therefore, following an approach combining both optical modeling and experimental approach in the present work, we report the designing and fabrication of highly reflective photonic crystals incorporating in perovskite solar cells (PvSCs). To start with, two dielectric materials having contrasting refractive index values were chosen as the alternating layers. Variable angle spectroscopic ellipsometry was performed to find the accurate optical constants of each layer which works as the input parameter for the transfer matrix method-based optical modeling. In this work, the radio frequency sputtering technique was used to deposit alternate layers of 1D-PC. For the fabrication of a colored perovskite solar cell (c-PvSC), the PC was deposited on the back side of the ITO-coated glass substrate. The deposition of PC was performed prior to the fabrication of the solar cell to prevent any damage to the PvSC. Using this approach, we successfully fabricated an 11.2% efficient blue-colored PvSC with the power conversion efficiency reaching 94.1% to the conventional opaque PvSC. Hence, this way of fabricating 1D-PC can integrate routes for revolutionizing applications of colored photovoltaics in diverse fields, including building integrated photovoltaics, automobile technology, etc.
Sonia Rani and Arun Kumar acknowledge Prime Minister Research Fellowship (PMRF-192002-2025 and PMRF-192002-1086 respectively). Dhriti Sundar Ghosh acknowledges funding support from the Department of Science and Technology (DST) of India via grants DST/NM/NT/2018/146, ECR/2018/002132, and SB/S2/RJN-048/2016.
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