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. Author manuscript; available in PMC: 2017 Jul 18.
Published in final edited form as: Appl Phys Lett. 2015 Dec 18;107(24):241108. doi: 10.1063/1.4938129

FIG. 4.

FIG. 4

(a) ON/OFF I-V curves for SnO2-only and CuO/SnO2 PDs under UV illumination at a wavelength of 290 nm. (b) Responsivity as a function of bias and wavelength for SnO2 and (c) SnO2-CuO thin film photodetecors.