The Impact of PEO and PVDF for Reducing the Phase Segregation in CsPbBr₂I Perovskites

In order to reduce the influence of the phase segregation in CsPbBr
2
I-based structures, the polyethylene oxide (PEO) and polyvinylidene fluoride (PVDF) solutions with dimethyl sulfoxide (DMSO) solvent with the various concentrations were used. According to the photoluminescence measurements and morphology analysis, the optimal mass ratios for PEO: PVDF and (PEO+PVDF): CsPbBr
2
I were in ranges 0,1-0,25 and 0,1-0,2 respectively.