Temperature-dependent photoluminescence on organic inorganic metal halide perovskite CH3NH3PbI3–x Clx prepared on ZnO/FTO substrates using a two-step method

Temperature-dependent photoluminescence on organic inorganic metal halide perovskite CH₃NH₃PbI_3–x Cl_x 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) Integrated PL intensity vs. temperature, and the Arrhenius equation fit, for temperatures in the 150–300 K range. The calculated exciton energy is 77.6 ± 10.9 meV. (b) PL peak FWHM vs. temperature, and a non-linear fit using the boson model. The fit parameters are indicated on the plot. (c) Photon energy vs. temperature, and a linear fit.