2024 : 11 : 22
Masood Mehrabian

Masood Mehrabian

Academic rank: Associate Professor
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Education: PhD.
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Research

Title
TiO2 and C60 transport nanolayers in optimized Pb-free CH3NH3SnI3-based perovskite solar cells
Type
JournalPaper
Keywords
Perovskite solar cells MASnI3 Titania Fullerene Nanomaterials
Year
2023
Journal Materials Science and Engineering B-Advanced Functional Solid-State Materials
DOI
Researchers Masood Mehrabian ، Elham Norouzi Afshar ، Omid Akhavan

Abstract

A Pb-free perovskite solar cell has been designed based on methylammonium (MA) tin-iodide (CH3NH3SnI3). The effect of electron transporting layer (ETL) material on the performance of the solar cell has been studied through substituting the ETL by TiO2 and C60 nanolayers. The energy level and charge carrier concentration profiles of the solar cells have been obtained for better understanding the involved mechanisms. The TiO2-containing solar cell showed the maximum power conversion efficiency (η) of ~25.5 % at room temperature, with open circuit voltage, short circuit current density and filling factor of ~1.06 V, 33.0 mA/cm2 and 73.1 %, respectively. Although the C60-containing perovskite solar cell presented a lower η with the value of ~20.8 %, it could present a higher external quantum efficiency at NIR wavelength region, as compared to the TiO2-containing cell. These results can excite further investigation about the role of ETL nanomaterials in the performance of Pb-free perovskite solar cells.