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Title: Photoluminescence study of ZnS and ZnS:Pb nanoparticles

Photoluminescence (PL) study of pure and 5wt. % lead doped ZnS prepared by co-precipitation method was conducted at room temperature. The prepared nanoparticles were characterized by X-ray Diffraction (XRD), UV-Visible (UV-Vis) spectrophotometer, Photoluminescence (PL) and Raman spectroscopy. XRD patterns confirm cubic structure of ZnS and PbS in doped sample. The band gap energy value increased in case of Pb doped ZnS nanoparticles. The PL spectrum of pure ZnS was de-convoluted into two peaks centered at 399nm and 441nm which were attributed to defect states of ZnS. In doped sample, a shoulder peak at 389nm and a broad peak centered at 505nm were observed. This broad green emission peak originated due to Pb activated ZnS states.
Authors:
; ; ; ;  [1]
  1. Laboratory for Sensors and Physics Education, Department of Physics, Guru Nanak Dev University, Amritsar – 143005 (India)
Publication Date:
OSTI Identifier:
22391697
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1661; Journal Issue: 1; Conference: ICCMP 2014: International Conference on Condensed Matter Physics 2014, Shimla (India), 4-6 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COPRECIPITATION; CUBIC LATTICES; DOPED MATERIALS; ELECTRONIC STRUCTURE; EMISSION SPECTRA; ENERGY GAP; LEAD SULFIDES; NANOPARTICLES; PHOTOLUMINESCENCE; RAMAN SPECTROSCOPY; TEMPERATURE RANGE 0273-0400 K; X-RAY DIFFRACTION; ZINC SULFIDES