Why Cr2O3 nanosheet Photocurrent is less than dark current ?

05 December 2023 0 7K Report

I saw from the paper that the photocurrent of cr2o3 films and cr2o3 hexagonal flakes is greater than the dark current, and they have photoresponsive characteristics. The dark current of my cr2o3 nanosheets is greater than the photocurrent. What is the possible reason?

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