Comparative performance analysis of lead-free perovskite solar cells based on FASnI3, CsSnI3, KGeCl3, and CsGeI3 absorbers with optimized charge transport layers
Perovskite solar cells (PSCs) are promising for next-generation photovoltaics, but their commercial viability is hindered by the toxicity of lead (Pb). This study investigates the performance of lead-free PSCs by comparatively evaluating four different perovskite absorber layers: FASnI3, CsSnI3, KGeCl3 and CsGeI3. Usin...