Improved stability of β-CsPbI3 inorganic perovskite using π-conjugated bifunctional surface capped organic cations for high performance photovoltaics

摘要

Multiple-ring naphthalenediammonium is employed for the first time to overcome the intrinsic instability of beta-CsPbI3 perovskite via anchoring the ammonium groups occupying A-site vacancies. It improves charge transport and moisture stability giving out a champion power conversion efficiency of 16.69% for an excellent inorganic perovskite solar cell.

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