| Summary: | Nowadays, Mn-doping is considered as a promising dissolution for the heavy usage of toxic lead in CsPbX<sub>3</sub> perovskite material. Interestingly, Mn-doping also introduces an additional photoluminescence band, which is favorable to enrich the emission gamut of this cesium lead halide. Here, a solution spraying strategy was employed for the direct preparation of CsPb<sub>x</sub>Mn<sub>1−x</sub>(Br,Cl)<sub>3</sub> film through MnCl<sub>2</sub> doping in host CsPbBr<sub>3</sub> material. The possible fabrication mechanism of the provided approach and the dependences of material properties on Mn-doping were investigated in detail. As the results shown, Pb was partially substituted by Mn as expected. With the ratio of PbBr<sub>2</sub>:MnCl<sub>2</sub> increasing from 3:0 to 1:1, the obtained film separately featured green, cyan, orange-red and pink-red emission, which was caused by the energy transferring process. Moreover, the combining energy of Cs, Pb, and Mn gradually red-shifted resulted from the formation of Cs-Cl, Pb-Cl and Mn-Br coordination bonding as MnCl<sub>2</sub> doping increased. In addition, the weight of short decay lifetime of prepared samples increased with the doping rising, which indicated a better exciton emission and less defect-related transition. The aiming of current work is to provide a new possibility for the facile preparation of Mn-doping CsPbX<sub>3</sub> film material.
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