Fig. 5From: The Extremely Enhanced Photocurrent Response in Topological Insulator Nanosheets with High ConductanceResponsivity and photoconductive gain as functions of the light power intensity at a wavelength of 532 nm. The responsivity is weak light power intensity dependence in vacuum. The responsivity decreases as the light power intensity decreases in atmosphere when the light power intensity is lower than 500 W/m2Back to article page