Effect of annealing temperature on the structural and optical properties of ZnS thin films

被引：8
|
作者：
Asghar, M. [1 ]
Mahmood, K. [2 ]
Samaa, B. M. [1 ]
Rabia, S. [1 ]
Shahid, M-Y [1 ]
机构：
[1] Islamia Univ Bahawalpur, Dept Phys, Bahawalpur 63100, Pakistan
[2] GC Univ Faisalabad, Dept Phys, Faisalabad 38000, Pakistan
来源：
MATERIALS TODAY-PROCEEDINGS | 2015年 / 2卷 / 10期
关键词：
ZnS; Phase transformation; EDX; XRD; PL;
D O I：
10.1016/j.matpr.2015.11.064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we have demonstrated the phase transformation from cubic ZnS to hexagonal ZnO by high temperature thermal annealing. The films were grown on Si (001) substrate by thermal evaporation system using ZnS powder as source material. The grown films were characterized using X-Ray diffraction (XRD), Photoluminescence (PL), Four Point Probe, Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray Diffraction (EDX). As-deposited ZnS film has mixed phases but high temperature annealing leads to transition from cubic to hexagonal phase. O atom attained sufficient energy during annealing and replaced the S atom in the crystal. PL spectra of as-grown sample exhibits a characteristics green emission at 2.4 eV of ZnS but annealed samples consist of band to band and defect emission of ZnO at 3.29 eV and 2.5 eV respectively. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5430 / 5435
页数：6
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