%A Peng Sun, Wei-Wei Yu, Xiao-Hang Pan, Wei Wei, Yan Sun, Ning-Yi Yuan, Jian-Ning Ding, Wen-Chao Zhao, Xin Chen, Ning Dai %T Fluorescence Enhancement of Metal-Capped Perovskite CH$_{3}$NH$_{3}$PbI$_{3}$ Thin Films %0 Journal Article %D 2017 %J Chin. Phys. Lett. %R 10.1088/0256-307X/34/9/096801 %P 096801%V 34 %N 9 %U {https://cpl.iphy.ac.cn/CN/abstract/article_70932.shtml} %8 2017-08-08 %X We fabricate nano-structural metal films to improve photoluminescence of perovskite films. When the perovskite film is placed on an ammonia-treated alumina film, stronger photoluminescence is found due to local field enhancement effects. In addition, the oxide spacer layer between the metal (e.g., Al, Ag and Au) substrate and the perovskite film plays an important role. The simulations and experiments imply that the enhancement is related to surface plasmons of nano-structural metals.