(4) Yan Xiang Jia Zhuang Zhu Ma Mixed phase mesoporous TiO2 film for high efficiency perovskite solar cells[J] Chemical Research in Chinese Universities 2019 35 1 :101 108 (5) Yan Xiang Zhu Ma Jia Zhuang Enhanced performance for planar perovskite solar cells with samarium doped TiO2 compact electron