Jun Hwan Ryu

Enhanced Tin Halide Perovskite Solar Cells via Crystal Growth Control Using a Multifunctional Interfacial Modifier Tin-based halide perovskites (Sn-HPs) are emerging as promising alternatives to lead-based perovskites in solar cells due to their reduced toxicity and advantageous optoelectronic properties. However, Sn-HPs face significant challenges such as rapid crystallization, high defect density, and limited stability.

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Unprecedented Inorganic HTL-based MA-free Sn-Pb Perovskite Photovoltaics with an Efficiency over 23% The majority of high-efficiency Sn-Pb perovskite solar cells (PSCs) have used methylammonium (MA) cation and PEDOT:PSS hole transport layer (HTL) which limits the device performance, especially in terms of stability. In this work, we propose a highly efficient and remarkably stable MA-free Sn-Pb PSC based on an inorganic HTL (NiOx), utilizing GeOx passivation derived from a GeI2 additive.