Optimized synthesis temperature and doping concentration of copper in zinc sulphide nanoparticles for green emission. (January 2021)

• Record Type: Journal Article
• Authors: Bindu, K.R.; Anila, E.I.
• Is Part Of: Materials science in semiconductor processing. Volume 121(2021)
• Publication Date: 2021-01
• Subjects: Nanoparticles -- Optoelectronic properties -- Photoluminescence; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2020.105317
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: Photoluminescence (PL) of copper doped zinc sulphide (ZnS:Cu) nanoparticles synthesised with different Cu concentrations and at different synthesis temperature have been investigated. These ZnS:Cu nanoparticles were synthesised without any capping agent by simple chemical precipitation method. So as prepared Cu doped ZnS nanoparticles are then characterized by using scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), photoluminescence (PL) and diffuse reflectance (DRS) spectroscopy. The optical properties of the ZnS:Cu nanoclusters are investigated in detail. Four emissions bands consisting of surface state emission (blue), Cu blue, green and red emissions which are both sensitive to the synthesis temperatures and dopant concentration are observed. The determination of the CIE colour coordinates from PL emission spectra confirms tunable color emission by varying the Cu concentration and synthesis temperature. Graphical abstract: Image 1