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(a) Schematic diagram of phototransistor with a CNT/CsPbBr3-QD channel. (b) Scanning electron microscope (SEM) image of a CNT film and atomic force microscope (AFM) image of a CsPbbr3-QD film. (c) PPF index. (d) Schematic diagram of photogating mechanism. Reproduced with permission [91]. Copyright 2021, springer nature. (e) Smart system to detect and block UV. Reproduced with permission [75]. Copyright 2020, Wiley-VCH GmbH.
