Perovskite ultraviolet photoelectric detector and preparation method thereof
An electrical detector and perovskite technology, applied in the field of perovskite ultraviolet photodetectors and their preparation, can solve the problems of low detection rate and easy attenuation of perovskite detectors, achieve damage resistance, prolong device life, The effect of increasing the number of photons
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[0058] An embodiment of the present invention provides a method for preparing a perovskite ultraviolet photodetector, which is characterized in that it includes:
[0059] (1) Cleaning of ITO conductive glass substrate;
[0060] First, the etched ITO conductive glass substrate was ultrasonically cleaned with deionized water, acetone solution and alcohol for 15 minutes, and then the ITO conductive glass substrate was blown dry with nitrogen gas.
[0061] (2) Prepare perovskite light absorbing layer array;
[0062] The preparation of the perovskite light-absorbing layer array can be on the ITO conductive glass substrate, using a mask plate, depositing patterned PbI by thermal evaporation 2 (lead iodide) array, PbI 2 The thickness of the film is about 180 nm, and the side length of the square is 800 μm. Spin-coat the MAI solution with a concentration of 30mg / ml onto the patterned PbI at a speed of 3000rpm 2 on top of the film, forming PbI 2 / MAI stacking, and then annealing t...
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