Optimising conditions for the growth of nanocrystalline ZnS thin films from acidic chemical baths

被引：33

作者：

Akhtar, Muhammad Saeed ^{[1
]}

Malik, Mohammad Azad ^{[1
]}

Riaz, Saira ^{[1
,2
,3
]}

Naseem, Shahzad ^{[1
,2
,3
]}

O'Brien, Paul ^{[1
,2
]}

机构：

[1] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

[3] Univ Punjab, Ctr Excellence Solid State Phys, Lahore 54590, Pakistan

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2015年 / 30卷

关键词：

Chemical bath deposition; Zinc sulfide; Thin films; Nanoparticles; p-XRD; ZINC-SULFIDE; OPTICAL-PROPERTIES; DEPOSITION TIME; TEMPERATURE; FABRICATION; SUBSTRATE;

D O I：

10.1016/j.mssp.2014.10.019

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The growth of nanocrystalline zinc sulfide thin films onto glass substrates by chemical bath deposition has been optimized at acidic pH. Powder X-ray diffraction (p-XRD) confirms the deposition of sphalerite, the cubic phase of ZnS. The crystallite size calculated by Scherrer equation was found to be 4.0 nm. Scanning Electron Microscopy (SEM) show clusters of spherical nanoparticles uniformly distributed over the surface of the glass substrates. Energy Dispersive X-ray (EDX) analysis of the deposited thin films show the zinc to sulfur ratio close to 1:1. The observed band gap (3.78 eV) of the deposited thin films is higher than that reported for cubic phase of bulk ZnS (3.54 eV) as expected due to nano-size crystallites. Binding energies calculated by X-ray Photoelectron Spectroscopy (XPS) confirm the material as ZnS and the photoluminescence measurements show the blue shift in emission maximum. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：292 / 297

页数：6

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