Influence of the HTL in FASn-PSCs
Perovskite solar cells (PSCs) have revolutionized the field of thin-film solar cells and have gained the interest of the scientific community due to their remarkable optoelectronic characteristics complemented by their structure-property tunability and facile deposition techniques. A critical issue that PSCs encounter is the presence of lead in the photoactive semiconductor, a cumulative toxicant that affects multiple body systems. Sn-based perovskite benefit from high carrier mobility and lower optical bandgap, which is more suitable for photovoltaic applications. Currently the performance of Sn-based PSCs is 14.8% PCE. Here, through numerical simulation of different materials, prior to device fabrication, we want to (1) optimize the thickness of the materials (transport layers and perovskite) and (ii) determine the effect of carrier mobility and band offset of different hole transport layer (HTL) materials in the performance of FASnI3 PSC. The use of Silvaco TCAD simulation at VIPERLAB CENER-MODELAB will give us the possibility to explore different materials and understand how their optoelectromic characteristics affect the performance of the photovoltaic devices.
Status: Ongoing
Date of proposal: 10/08/2023
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