Synthesis, Ambient storage stability and optoelectronic properties of Mn-doped CsPbBr 3 perovskite crystals

Despite excellent optoelectronic properties of CsPbBr 3 , high yield production of CsPbBr 3 and stability in ambient condition are key challenges requiring significant attention. Herein, synthesis of stable CsPbBr 3 crystals is demonstrated with high yield possibility in ambient condition. Incorporation of Mn dopant into CsPbBr 3 crystal are also demonstrated and effect of doping on structural, optical, and optoelectronic properties are investigated. The addition of Mn dopant (0.3–1.7 At.% ) resulted in reduction of size from ~ 8 to ~ 4.5 µm along with increased band gap from ~ 2.25 to 2.31 eV. The addition of Mn dopant also results blue shift in Raman peaks and photoluminescence peak in comparison to undoped CsPbBr 3 crystals. The undoped and Mn-doped both CsPbBr 3 crystals have shown stable structural, morphological and optical properties for more than a year under ambient condition storage. Mn-doped CsPbBr 3 crystals renders better stability of electrical and optoelectrical properties when stored in ambient conditions for a year.