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Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique

Two different concentrations of CdCl2 and (NH2)2CS were used to prepare CdS thin films, to be deposited on glass substrate by chemical bath deposition (CBD) technique. CdCl2 (0.000312 M and 0.000625 M) was employed as a source of Cd2+ while (NH2)2CS (0.00125 M and 0.000625 M) for S2− at a constant b...

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Main Authors: Rizwan, Zahid, Zakaria, Azmi, Mohd Ghazali, Mohd Sabri, Jafari, Atefeh, Din, Fasih Ud, Zamiri, Reza
Format: Article
Language:English
Published: MDPI 2011
Online Access:http://psasir.upm.edu.my/id/eprint/77953/1/7953.pdf
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spelling oai:psasir.upm.edu.my:77953 http://psasir.upm.edu.my/id/eprint/77953/ Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique Rizwan, Zahid Zakaria, Azmi Mohd Ghazali, Mohd Sabri Jafari, Atefeh Din, Fasih Ud Zamiri, Reza Two different concentrations of CdCl2 and (NH2)2CS were used to prepare CdS thin films, to be deposited on glass substrate by chemical bath deposition (CBD) technique. CdCl2 (0.000312 M and 0.000625 M) was employed as a source of Cd2+ while (NH2)2CS (0.00125 M and 0.000625 M) for S2− at a constant bath temperature of 70 °C. Adhesion of the deposited films was found to be very good for all the solution concentrations of both reagents. The films were air-annealed at a temperature between 200 °C to 360 °C for one hour. The minimum thickness was observed to be 33.6 nm for film annealed at 320 °C. XRD analyses reveal that the films were cubic along with peaks of hexagonal phase for all film samples. The crystallite size of the films decreased from 41.4 nm to 7.4 nm with the increase of annealing temperature for the CdCl2 (0.000312 M). Optical energy band gap (Eg), Urbach energy (Eu) and absorption coefficient (α) have been calculated from the transmission spectral data. These parameters have been discussed as a function of annealing temperature and solution concentration. The best transmission (about 97%) was obtained for the air-annealed films at higher temperature at CdCl2 (0.000312 M). MDPI 2011 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/77953/1/7953.pdf Rizwan, Zahid and Zakaria, Azmi and Mohd Ghazali, Mohd Sabri and Jafari, Atefeh and Din, Fasih Ud and Zamiri, Reza (2011) Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique. International Journal of Molecular Sciences, 12 (2). pp. 1293-1305. ISSN 1661-6596; ESSN: 1422-0067 https://www.mdpi.com/1422-0067/12/2/1293 10.3390/ijms12021293
institution UPM IR
collection UPM IR
language English
description Two different concentrations of CdCl2 and (NH2)2CS were used to prepare CdS thin films, to be deposited on glass substrate by chemical bath deposition (CBD) technique. CdCl2 (0.000312 M and 0.000625 M) was employed as a source of Cd2+ while (NH2)2CS (0.00125 M and 0.000625 M) for S2− at a constant bath temperature of 70 °C. Adhesion of the deposited films was found to be very good for all the solution concentrations of both reagents. The films were air-annealed at a temperature between 200 °C to 360 °C for one hour. The minimum thickness was observed to be 33.6 nm for film annealed at 320 °C. XRD analyses reveal that the films were cubic along with peaks of hexagonal phase for all film samples. The crystallite size of the films decreased from 41.4 nm to 7.4 nm with the increase of annealing temperature for the CdCl2 (0.000312 M). Optical energy band gap (Eg), Urbach energy (Eu) and absorption coefficient (α) have been calculated from the transmission spectral data. These parameters have been discussed as a function of annealing temperature and solution concentration. The best transmission (about 97%) was obtained for the air-annealed films at higher temperature at CdCl2 (0.000312 M).
format Article
author Rizwan, Zahid
Zakaria, Azmi
Mohd Ghazali, Mohd Sabri
Jafari, Atefeh
Din, Fasih Ud
Zamiri, Reza
spellingShingle Rizwan, Zahid
Zakaria, Azmi
Mohd Ghazali, Mohd Sabri
Jafari, Atefeh
Din, Fasih Ud
Zamiri, Reza
Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique
author_facet Rizwan, Zahid
Zakaria, Azmi
Mohd Ghazali, Mohd Sabri
Jafari, Atefeh
Din, Fasih Ud
Zamiri, Reza
author_sort Rizwan, Zahid
title Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique
title_short Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique
title_full Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique
title_fullStr Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique
title_full_unstemmed Effect of annealing temperature on the optical spectra of CdS thin films deposited at low solution concentrations by chemical bath deposition (CBD) technique
title_sort effect of annealing temperature on the optical spectra of cds thin films deposited at low solution concentrations by chemical bath deposition (cbd) technique
publisher MDPI
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/77953/1/7953.pdf
_version_ 1819299478124888064
score 13.4562235

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