The Effect of Thermal Annealing on Charge Transport in Organolead Halide Perovskite Microplate Field-Effect Transistors

Transformation of unipolar n-type semiconductor behavior to ambipolar and finally to unipolar p-type behavior in CH₃NH₃PbI₃ microplate field-effect transistors by thermal annealing is reported. The photoluminescence spectra essentially maintains the same features before and after the thermal annealing process, demonstrating that the charge transport measurement provides a sensitive way to probe low concentration defects in perovskite materials.

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