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. 2022 Apr 27;12:6834. doi: 10.1038/s41598-022-10879-5

Figure 8.

Figure 8

(a) Schematic representation of the photodetector system based on self-connected CuO–ZnO core–shell heterojunction nanowire arrays under illumination, (b) Current–voltage characteristic of CuO_MIE, I–U semilogarithmic plot of the photodetector systems: (c) CuO–ZnO_MIE_1 and (d) CuO–ZnO_MIE_2 under dark (black) and under illumination with different spectral intervals: 400–500 nm (magenta), 400–600 nm (green), 600–900 nm (cyan) and 2 SUN (orange), Schematic representations of the band diagrams for: (e) CuO and ZnO and (f) CuO–ZnO core–shell heterojunction. Insets: (b–d) Optical images of the investigated samples.