Enhanced optical and electrical properties of zinc: SnO2 nanoparticles for optoelectronic applications. (2022)

• Record Type: Journal Article
• Authors: Garg, Vijay; Kumari, Renu; Sharma, Harsh; Rehani, Divya; Kumar, Vipin; Saxena, Manish
• Is Part Of: Materials today. Volume 49:Part 8(2022)
• Page Start: 3430
• Page End: 3434
• Publication Date: 2022
• Subjects: Nanoparticles -- SnO2 -- Doping -- Zn-doped -- Blue shift -- Tauc plots; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.03.133
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Tin oxide is an impressive metal oxide for optoelectronic applications and its properties can be easily augmented with doping. In current research work, undoped and zinc-doped SnO2 nanoparticles annealed at 500 °C were prepared by a solid-state reaction method. The rutile tetragonal structure for undoped and zinc-doped SnO2 nanoparticles was proved by the analysis of their x-ray diffraction (XRD) patterns. Scanning electron microscope (SEM) images confirm the spherical, smooth, and dense morphology. The presence of Sn, O, and Zn ions are supported by energy dispersive x-ray study (EDX). The transmission spectrum obtained by UV–Visible spectroscopy shows a blue shift and the energy band gap (Eg ) for undoped and zinc-doped SnO2 nanoparticles changes from 3.03 to 3.18 eV. Photoluminiscence (PL) spectra of synthesized samples shows one emission peak at 430 nm whose intensity increases with zinc-doping. The electrical resistivity was studied by Hall-effect measurement and it revealed that the resistivity decreases with zinc doping.