Staff View: Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties

Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties

Zinc oxide (ZnO) thin films have been deposited onto glass substrates at various deposition speeds by a sonicated sol–gel dip-coating technique. This work studies the effects of deposition speed on the crystallisation behaviour and optical and electrical properties of the resulting films. X-ray diff...

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Main Authors:	M. F., Malek, M. H., Mamat, Z., Kusaimi, M. Z., Sahdan, M. Z., Musa, Ayib Rosdi, Zainun, A. B., Suriani, N. D., Md Sin, S. B., Abd Hamid, M., Rusop
Format:	Article
Published:	Elsevier Ltd 2014
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/6407/ http://dx.doi.org/10.1016/j.jallcom.2013.07.202
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spelling	my.ump.umpir.64072018-11-30T03:19:15Z http://umpir.ump.edu.my/id/eprint/6407/ Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties M. F., Malek M. H., Mamat Z., Kusaimi M. Z., Sahdan M. Z., Musa Ayib Rosdi, Zainun A. B., Suriani N. D., Md Sin S. B., Abd Hamid M., Rusop TK Electrical engineering. Electronics Nuclear engineering Zinc oxide (ZnO) thin films have been deposited onto glass substrates at various deposition speeds by a sonicated sol–gel dip-coating technique. This work studies the effects of deposition speed on the crystallisation behaviour and optical and electrical properties of the resulting films. X-ray diffraction (XRD) analysis showed that thin films were preferentially oriented along the (0 0 2) c-axis direction of the crystal. The transformation sequence of strain and stress effects in ZnO thin films has also been studied. The films deposited at a low deposition speed exhibited a large compressive stress of 0.78 GPa, which decreased to 0.43 GPa as the deposition speed increased to 40 mm/min. Interestingly, the enhancement in the crystallinity of these films led to a significant reduction in compressive stress. All films exhibited an average transmittance of greater than 90% in the visible region, with absorption edges at ∼380 nm. The photoluminescence (PL) measurements indicated that the intensity of the emission peaks varied significantly with deposition speed. The optical band gap energy (Eg) was evaluated as 3.276–3.289 eV, which increased with decreasing compressive stress along the c-axis. The energy band gap of the resulting ZnO films was found to be strongly influenced by the preferred c-axis (0 0 2) orientation. Elsevier Ltd 2014 Article PeerReviewed M. F., Malek and M. H., Mamat and Z., Kusaimi and M. Z., Sahdan and M. Z., Musa and Ayib Rosdi, Zainun and A. B., Suriani and N. D., Md Sin and S. B., Abd Hamid and M., Rusop (2014) Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties. Journal of Alloys and Compounds, 582. pp. 12-21. ISSN 0925-8388 (print), 1873-4669 (online) http://dx.doi.org/10.1016/j.jallcom.2013.07.202 DOI: 10.1016/j.jallcom.2013.07.202
institution	Universiti Malaysia Pahang
building	UMP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Pahang
content_source	UMP Institutional Repository
url_provider	http://umpir.ump.edu.my/
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering M. F., Malek M. H., Mamat Z., Kusaimi M. Z., Sahdan M. Z., Musa Ayib Rosdi, Zainun A. B., Suriani N. D., Md Sin S. B., Abd Hamid M., Rusop Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties
description	Zinc oxide (ZnO) thin films have been deposited onto glass substrates at various deposition speeds by a sonicated sol–gel dip-coating technique. This work studies the effects of deposition speed on the crystallisation behaviour and optical and electrical properties of the resulting films. X-ray diffraction (XRD) analysis showed that thin films were preferentially oriented along the (0 0 2) c-axis direction of the crystal. The transformation sequence of strain and stress effects in ZnO thin films has also been studied. The films deposited at a low deposition speed exhibited a large compressive stress of 0.78 GPa, which decreased to 0.43 GPa as the deposition speed increased to 40 mm/min. Interestingly, the enhancement in the crystallinity of these films led to a significant reduction in compressive stress. All films exhibited an average transmittance of greater than 90% in the visible region, with absorption edges at ∼380 nm. The photoluminescence (PL) measurements indicated that the intensity of the emission peaks varied significantly with deposition speed. The optical band gap energy (Eg) was evaluated as 3.276–3.289 eV, which increased with decreasing compressive stress along the c-axis. The energy band gap of the resulting ZnO films was found to be strongly influenced by the preferred c-axis (0 0 2) orientation.
format	Article
author	M. F., Malek M. H., Mamat Z., Kusaimi M. Z., Sahdan M. Z., Musa Ayib Rosdi, Zainun A. B., Suriani N. D., Md Sin S. B., Abd Hamid M., Rusop
author_facet	M. F., Malek M. H., Mamat Z., Kusaimi M. Z., Sahdan M. Z., Musa Ayib Rosdi, Zainun A. B., Suriani N. D., Md Sin S. B., Abd Hamid M., Rusop
author_sort	M. F., Malek
title	Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties
title_short	Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties
title_full	Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties
title_fullStr	Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties
title_full_unstemmed	Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties
title_sort	sonicated sol–gel preparation of nanoparticulate zno thin films with various deposition speeds: the highly preferred c-axis (0 0 2) orientation enhances the final properties
publisher	Elsevier Ltd
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/6407/ http://dx.doi.org/10.1016/j.jallcom.2013.07.202
_version_	1643665372181692416
score	13.223943

Sonicated Sol–gel Preparation of nanoparticulate ZnO Thin Films with Various Deposition Speeds: The Highly Preferred c-axis (0 0 2) Orientation Enhances the Final Properties

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