Low-Temperature Growing Anatase TiO2/SnO2 Multi-dimensional Heterojunctions at MXene Conductive Network for High-Efficient Perovskite Solar Cells

Nanoscale multi-dimensional heterojunctions in situ grow at the edge of two-dimensional MXene conductive network. A controlled anneal procedure in 150 °C is for preparing anatase TiO 2 /SnO 2 heterojunctions with oxygen vacancy scramble effect. The perovskite solar cells achieve high power conversion efficiency and high moisture-resistance stability.