Fig. 2: Photoresponse characteristics. | Light: Science & Applications

Fig. 2: Photoresponse characteristics.

From: MXene-GaN van der Waals metal-semiconductor junctions for high performance multiple quantum well photodetectors

Fig. 2

I–V curves in the logarithmic coordinate axis of a the proposed PD and b the Au/Cr-GaN-Au/Cr MQW PD measured in the dark, ambient, and under illumination with different wavelengths (405 nm, 450 nm, and 520 nm). c Responsivity of the proposed PD versus the incident optical power in the logarithmic coordinate. The fitted line and parameters are marked in the figure. d Normalized transient photocurrent response of the proposed PD. e Time-dependent photoresponse under various optical power in different wavelengths (405 nm, 450 nm, and 520 nm) of the proposed PD at a +5 V applied bias. f Linear dynamic ranges of the proposed device under illumination with different wavelengths (405 nm, 450 nm, and 520 nm).

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