The effect of vacuum and air annealing on the structural, optical and photoluminescence properties of ZnS films

K. Priya; Gowrish K. Rao; Muhammed Ali AV; M. S. Murari; Ganesh Sanjeev

doi:10.1016/j.physb.2021.413219

The effect of vacuum and air annealing on the structural, optical and photoluminescence properties of ZnS films

K. Priya
, Gowrish K. Rao^*
, Muhammed Ali AV
, M. S. Murari
, Ganesh Sanjeev

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The deposition temperature and post-deposition heat treatment can be effectively used to fine tune the structure and composition of the films to obtain desired performance. In this paper, we have investigated the effect of elevated substrate temperature and post-deposition annealing (in air and vacuum) on the properties of ZnS films. Both the tools were found to produce considerable changes in the crystal structure of the films. The major impact was found to be an increase in crystallite size which effectively reduced the defects. Although a small amount of tensile stress was produced as a side-effect of heat treatment, the films remained structurally intact. The vacuum annealing was found to be far more productive than annealing in air. It produced nearly the same amount of improvement in the crystallite size, but with considerably less tensile stress. Furthermore, the bandgap of the films remained unaffected by vacuum annealing.

Original language	English
Article number	413219
Journal	Physica B: Condensed Matter
Volume	619
DOIs	https://doi.org/10.1016/j.physb.2021.413219
Publication status	Published - 15-10-2021

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2021.413219

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title = "The effect of vacuum and air annealing on the structural, optical and photoluminescence properties of ZnS films",

abstract = "The deposition temperature and post-deposition heat treatment can be effectively used to fine tune the structure and composition of the films to obtain desired performance. In this paper, we have investigated the effect of elevated substrate temperature and post-deposition annealing (in air and vacuum) on the properties of ZnS films. Both the tools were found to produce considerable changes in the crystal structure of the films. The major impact was found to be an increase in crystallite size which effectively reduced the defects. Although a small amount of tensile stress was produced as a side-effect of heat treatment, the films remained structurally intact. The vacuum annealing was found to be far more productive than annealing in air. It produced nearly the same amount of improvement in the crystallite size, but with considerably less tensile stress. Furthermore, the bandgap of the films remained unaffected by vacuum annealing.",

author = "K. Priya and Rao, \{Gowrish K.\} and AV, \{Muhammed Ali\} and Murari, \{M. S.\} and Ganesh Sanjeev",

note = "Funding Information: The authors are thankful to DAE- BRNS , Govt. of India for funding the above research work (Sanction No.: 34(1)/14/37/2014 ). The authors are also thankful to Innovation center, Manipal Institute of Technology, Manipal and DST PURSE LAB, Mangalore University, Mangalagangotri for providing characterization facilities. Funding Information: The authors are thankful to DAE-BRNS, Govt. of India for funding the above research work (Sanction No.: 34(1)/14/37/2014). The authors are also thankful to Innovation center, Manipal Institute of Technology, Manipal and DST PURSE LAB, Mangalore University, Mangalagangotri for providing characterization facilities. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

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doi = "10.1016/j.physb.2021.413219",

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AU - Priya, K.

AU - Rao, Gowrish K.

AU - AV, Muhammed Ali

AU - Murari, M. S.

AU - Sanjeev, Ganesh

N1 - Funding Information: The authors are thankful to DAE- BRNS , Govt. of India for funding the above research work (Sanction No.: 34(1)/14/37/2014 ). The authors are also thankful to Innovation center, Manipal Institute of Technology, Manipal and DST PURSE LAB, Mangalore University, Mangalagangotri for providing characterization facilities. Funding Information: The authors are thankful to DAE-BRNS, Govt. of India for funding the above research work (Sanction No.: 34(1)/14/37/2014). The authors are also thankful to Innovation center, Manipal Institute of Technology, Manipal and DST PURSE LAB, Mangalore University, Mangalagangotri for providing characterization facilities. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/10/15

Y1 - 2021/10/15

N2 - The deposition temperature and post-deposition heat treatment can be effectively used to fine tune the structure and composition of the films to obtain desired performance. In this paper, we have investigated the effect of elevated substrate temperature and post-deposition annealing (in air and vacuum) on the properties of ZnS films. Both the tools were found to produce considerable changes in the crystal structure of the films. The major impact was found to be an increase in crystallite size which effectively reduced the defects. Although a small amount of tensile stress was produced as a side-effect of heat treatment, the films remained structurally intact. The vacuum annealing was found to be far more productive than annealing in air. It produced nearly the same amount of improvement in the crystallite size, but with considerably less tensile stress. Furthermore, the bandgap of the films remained unaffected by vacuum annealing.

AB - The deposition temperature and post-deposition heat treatment can be effectively used to fine tune the structure and composition of the films to obtain desired performance. In this paper, we have investigated the effect of elevated substrate temperature and post-deposition annealing (in air and vacuum) on the properties of ZnS films. Both the tools were found to produce considerable changes in the crystal structure of the films. The major impact was found to be an increase in crystallite size which effectively reduced the defects. Although a small amount of tensile stress was produced as a side-effect of heat treatment, the films remained structurally intact. The vacuum annealing was found to be far more productive than annealing in air. It produced nearly the same amount of improvement in the crystallite size, but with considerably less tensile stress. Furthermore, the bandgap of the films remained unaffected by vacuum annealing.

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The effect of vacuum and air annealing on the structural, optical and photoluminescence properties of ZnS films

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