Assymetric Functional Group Substituted Polymer Passivating Ion Defect of Perovskite Solar Cell
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Organometal halide perovskite solar cell have become one of the new promising solar cells with outstanding efficiency increment. However, critical issue of stability during device operation should be solved. Here, we synthesized ion defect passivating polymer with adopting lewis base containing cyano and ethylene glycol functional group. Also, asymmetrical substitution of functional group helped better solubility and limited aggregation. With this study, we suggest new insight for passivating ion defects in perovskite active layer.