Temperature-dependent photoluminescence on organic inorganic metal halide perovskite CH3NH3PbI3–x Clx prepared on ZnO/FTO substrates using a two-step method
Zhuang Shiwei, Xu Deqian, Xu Jiaxin, Wu Bin, Zhang Yuantao, Dong Xin, Li Guoxing, Zhang Baolin, Du Guotong
       

(color online) (a) Temperature-dependent PL spectra of CH NH PbI Cl , for temperatures in the 10–300 K range. (b) Normalized PL spectra for temperatures in the 10–60 K range. (c) Normalized PL spectra for temperatures in the 60–150 K range. (d) Normalized PL spectra, for temperatures in the 150–300 K range.