Investigation of Effect of Electron Transport Layer/Perovskite Layer Interface on Power Generation of Perovskite Solar Cell under Indoor Lighting Conditions
발표자
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초록
내용
In this presentation, using directional illumination combined with nanoscale scanning probe microscopy characterization, morphology-dependent charge transport measurements are performed to provide a comprehensive understanding that the optoelectronic behaviors of (FAPbI3)0.85(MAPbBr3)0.15 containing 5 vol% of cesium (Cs5vol%) with various electron transport layers (ETLs), SnO2, c-TiO2, and PC61BM/SnO2 under indoor light. Our approach allows us to identify the charge transport properties of the perovskite film and perovskite/ETL interface separately. Conductive AFM results show that SnO2 as ETL plays an effective role to enhance the charge collection properties of grain boundaries (GBs) compared to c-TiO2 and PCBM/SnO2. Kelvin probe force microscopy results confirm that SnO2-based devices exhibit homogeneous surface potential and improved overall surface photovoltage.