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Lead Free Ch3nh3sni3 Perovskite Thin-Film With P-Type Semiconducting Nature And Metal-Like Conductivity, Anastasiia Iefanova
Lead Free Ch3nh3sni3 Perovskite Thin-Film With P-Type Semiconducting Nature And Metal-Like Conductivity, Anastasiia Iefanova
Electronic Theses and Dissertations
CH3NH3SnI3 and CH3NH3PbI3 have become very promising light absorbing materials for photovoltaic devices over the last several years. CH3NH3PbI3 based perovskite solar cells have reached a solar-to-electricity conversion efficiency of ~ 22%. Nevertheless, CH3NH3PbI3 perovskite solar cells contain lead, which has serious consequences for the environment and human health. In this work, the lead was replaced with less toxic tin. Lead free CH3NH3SnI3 perovskite thin film was prepared by two low temperature solution processing methods and characterized using various tools such as Xray Diffraction (XRD) and absorption spectroscopy (UV-VIS). The distinctive p-type semiconducting nature and metal like conductivity of CH3NH3SnI3 …