Crystal growth of ZnO bar using joule heating

Crystal growth is important for understanding physiochemical mechanisms for zinc oxide (ZnO). ZnO exists in different crystal structures under specific condition and each of the crystal growth consists of different characteristics. The major problem for growing the ZnO crystal was to conduct electri...

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Main Author:	Har, Lai Yee
Format:	Undergraduates Project Papers
Language:	English English English English
Published:	2016
Subjects:	Q Science (General) T Technology (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/20260/ http://umpir.ump.edu.my/id/eprint/20260/ http://umpir.ump.edu.my/id/eprint/20260/2/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Table%20of%20contents.pdf http://umpir.ump.edu.my/id/eprint/20260/13/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Abstract.pdf http://umpir.ump.edu.my/id/eprint/20260/19/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/20260/25/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-References.pdf

id	ump-20260
recordtype	eprints
spelling	ump-202602018-03-12T03:02:54Z http://umpir.ump.edu.my/id/eprint/20260/ Crystal growth of ZnO bar using joule heating Har, Lai Yee Q Science (General) T Technology (General) Crystal growth is important for understanding physiochemical mechanisms for zinc oxide (ZnO). ZnO exists in different crystal structures under specific condition and each of the crystal growth consists of different characteristics. The major problem for growing the ZnO crystal was to conduct electricity through the wide band gap semiconductor. As a solution, joule heating method was adopted to conduct electricity in this research. Joule heating method provided a stable and continuous current and high applied voltage throughout the circuit. New form of zinc oxide crystals was wished to be observed through this research. The three main objectives of this research were to grow various forms of ZnO crystals, master in conducting joule heating technique and characterize the samples through topography characterization, absorbance characterization, emission spectrum characterization and X-Ray Diffraction characterization. Scanning Electron Microscopy (SEM), Ultraviolet-Visible (UV-Vis) Spectroscopy, Photoluminescence Spectroscopy and X-Ray Diffractometer (XRD) were used for the characterization respectively. SEM showed the most of the crystals grew by each sample in the rock like shape and hexagonal shape. UV-Vis showed the wavelength of all samples was located around 380 nm. Therefore, the calculated exitonic energy was around 3.20 eV which was nearly matched with theoretical band gap 3.37 eV. The XRD results showed most of the crystals grew on the plane (1 0 1). The crystals grew were in rock like shape. This was proved by the plane (1 0 1) had the highest intensity in all the samples. As a conclusion, the optimum current for crystals grew was 3.0 A and the crystals were mostly grew in the plane (1 0 1). The easiest grew crystals were in rock and hexagonal shape. 2016-12 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/20260/2/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Table%20of%20contents.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/20260/13/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Abstract.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/20260/19/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Chapter%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/20260/25/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-References.pdf Har, Lai Yee (2016) Crystal growth of ZnO bar using joule heating. Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:102180&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English English
topic	Q Science (General) T Technology (General)
spellingShingle	Q Science (General) T Technology (General) Har, Lai Yee Crystal growth of ZnO bar using joule heating
description	Crystal growth is important for understanding physiochemical mechanisms for zinc oxide (ZnO). ZnO exists in different crystal structures under specific condition and each of the crystal growth consists of different characteristics. The major problem for growing the ZnO crystal was to conduct electricity through the wide band gap semiconductor. As a solution, joule heating method was adopted to conduct electricity in this research. Joule heating method provided a stable and continuous current and high applied voltage throughout the circuit. New form of zinc oxide crystals was wished to be observed through this research. The three main objectives of this research were to grow various forms of ZnO crystals, master in conducting joule heating technique and characterize the samples through topography characterization, absorbance characterization, emission spectrum characterization and X-Ray Diffraction characterization. Scanning Electron Microscopy (SEM), Ultraviolet-Visible (UV-Vis) Spectroscopy, Photoluminescence Spectroscopy and X-Ray Diffractometer (XRD) were used for the characterization respectively. SEM showed the most of the crystals grew by each sample in the rock like shape and hexagonal shape. UV-Vis showed the wavelength of all samples was located around 380 nm. Therefore, the calculated exitonic energy was around 3.20 eV which was nearly matched with theoretical band gap 3.37 eV. The XRD results showed most of the crystals grew on the plane (1 0 1). The crystals grew were in rock like shape. This was proved by the plane (1 0 1) had the highest intensity in all the samples. As a conclusion, the optimum current for crystals grew was 3.0 A and the crystals were mostly grew in the plane (1 0 1). The easiest grew crystals were in rock and hexagonal shape.
format	Undergraduates Project Papers
author	Har, Lai Yee
author_facet	Har, Lai Yee
author_sort	Har, Lai Yee
title	Crystal growth of ZnO bar using joule heating
title_short	Crystal growth of ZnO bar using joule heating
title_full	Crystal growth of ZnO bar using joule heating
title_fullStr	Crystal growth of ZnO bar using joule heating
title_full_unstemmed	Crystal growth of ZnO bar using joule heating
title_sort	crystal growth of zno bar using joule heating
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/20260/ http://umpir.ump.edu.my/id/eprint/20260/ http://umpir.ump.edu.my/id/eprint/20260/2/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Table%20of%20contents.pdf http://umpir.ump.edu.my/id/eprint/20260/13/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Abstract.pdf http://umpir.ump.edu.my/id/eprint/20260/19/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/20260/25/Crystal%20growth%20of%20ZnO%20bar%20using%20joule%20heating-References.pdf
first_indexed	2023-09-18T22:29:06Z
last_indexed	2023-09-18T22:29:06Z
_version_	1777416165625167872

Crystal growth of ZnO bar using joule heating

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