Development of 2D based ZnO–MoS2 nanocomposite for photodetector with light-induced current study

Composites of 2D transition metal dichalcogenides and metal oxides give suitable UV–Visible photoresponse properties. Here, in our research work, the preparation of ZnO–MoS2 nanocomposite is done via a two-step sol-gelassisted cost-effective, and facile synthesis method. The optical bandgap of the as-prepared nanocomposite was found to be 3.68 eV. X-ray diffractogram revealed the crystalline nature of the as-prepared nanocomposite. The optical properties of the material were investigated using Ultraviolet–Visible spectroscopy (UV–Visible) and Fourier Transform Infrared (FTIR) spectroscopy. Surface morphological studies were performed by Scanning electron microscopy (SEM) and the elemental investigations were carried out by the Energy Dispersive X-ray spectroscopy (EDS). For the as-prepared nanomaterial, photoresponsivity was found to be 34.50 mA/W, specific detectivity was 2.36 × 1010 Jones, and response time was found to be 2.46 s at the applied drift potential of 5 V.