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Figure 4 | Nanoscale Research Letters

Figure 4

From: ZnO nanoneedle/H2O solid-liquid heterojunction-based self-powered ultraviolet detector

Figure 4

Photoresponsivity of the ZnO nanoneedle array/water UV detector. (a) Typical I-V characteristics of the ZnO nanoneedle array/water UV photodetector in darkness and under the illumination of 1.25 mW/cm2 of UV light (λ = 365 nm). (b) Spectral responsivity characteristic of the UV detector under 0-V bias. (c) Photoresponse current versus UV illumination intensity under 0-V bias and 365-nm UV light irradiation.

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