Adv funct materials – 2022 – vasiljevic – forbidden polarisation and extraordinary piezoelectric effect in organometallic

HIGHLIGHTS

SUMMARY

    Organometallic lead halide perovskites, represented by methylammonium (MA) lead halides MAPbX3 (X=Cl, Br, I), exhibit unusually broad spectrum of properties attractive for optoelectronic applications such as solar cells, radiation detectors, light-emitting diodes, and photodetectors.[1] Despite extensive studies, some key aspects of MAPbX3 behavior are still poorly understood. Among the most intriguing are the nature of ionic defects, their interaction with external fields, and the role of their transport on properties.[2] MA+1, Pb+2, X-1 and H+1 are directly or indirectly known to form vacancies and possibly interstitials . . .

     

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