UV-Photodetectors based on CuO/ZnO nanocomposites

CuO/ZnO nanocomposites were prepared by a simple, low temperature hydrothermal method and followed by anodization technique on Indium-doped tin oxide (ITO) coated on the glass substrate. The prepared sample was characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis. All results confirmed the deposition of CuO on the surface of ZnO nanorod arrays. Further, CuO/ZnO nanocomposite-based UV photodetectors were characterized by standard I-V curves. As a result, CuO/ZnO nanocomposite devices exhibited high responsivity, photocurrent gain, and good reliability as compared to pure ZnO nanorod devices. Therefore, the nanocomposites of CuO/ZnO devices show good promise for UV photodetectors with possibility to fine-tune properties, and it is worthy of further investigation.