MoS2 and CdMoS4 nanostructure-based UV light photodetectors

Mahendra S Pawar; Sunil R Kadam; Bharat B Kale; Dattatray J Late

doi:10.1039/d1na00326g

MoS₂ and CdMoS₄ nanostructure-based UV light photodetectors

Nanoscale Adv. 2021 Jul 21;3(16):4799-4803. doi: 10.1039/d1na00326g. eCollection 2021 Aug 10.

Authors

Mahendra S Pawar^{1

2}, Sunil R Kadam³, Bharat B Kale³, Dattatray J Late^{1

2

4}

Affiliations

¹ Physical and Material Chemistry Division, CSIR - National Chemical Laboratory Pune 411008 Maharashtra India datta099@gmail.com djlate@mum.amity.edu.
² Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India.
³ Centre for Materials for Electronics Technology (C-MET), Department of Electronics and Information and Technology (DeitY) Pune 411008 Maharashtra India bbkale@cmet.gov.in.
⁴ Centre for Nanoscience & Nanotechnology, Amity University Maharashtra Mumbai-Pune Expressway, Bhatan, Post - Somathne, Panvel Mumbai Maharashtra 410206 India.

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.