MoS2 and CdMoS4 nanostructure-based UV light photodetectors

Abstract

We have developed MoS₂ nanosheets and CdMoS₄ hierarchical nanostructures based on a UV light photodetector. The surface morphologies of the as-prepared samples were investigated via field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The performance parameters for the present photodetectors are investigated under the illumination of UV light having a wavelength of ∼385 nm. Upon the illumination of UV light, the CdMoS₄-based photodetector device showed a better response to UV light compared to the MoS₂ device in terms of photoresponsivity, response time (∼72 s) and recovery time (∼94 s). Our results reveal that CdMoS₄ hierarchical nanostructures are practical for enhancing the device performance.