000			02923ntm a2200289 a 4500
001			vtls000102180
003			KUKTEM
005			20251117113354.0
008			171027t2017 my a f am 000 0 eng d
020			_aTHE0000149(Local)
039		9	_a201905131429 _bnazirah _c201711071042 _dnazri _y201710271030 _znazri
040			_aUMP
090			_aFIST .H37 2017 r Bc.
100	1		_aHar, Lai Yee
245	1	0	_aCrystal growth of ZnO bar using joule heating / _cHar Lai Yee
260			_aKuantan, Pahang : _bUMP, _c2017
300			_axiii, 85 p. : _bill. (some col.) ; _c30 cm. + _e1 CD-ROM
500			_aFaculty of Industrial Sciences and Technology
500			_aPublished December 2016
502			_aProject Paper (Bachelor of Applied Science (Honor) Material Technology) -- Universiti Malaysia Pahang – 2017
504			_aBibliography : p. 83-85
520	3		_aCrystal 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.
610	2	0	_aFaculty of Industrial Sciences and Technology _xDissertations
650		0	_aUniversities and Colleges _xDissertations
650		0	_aTheses
999			_aVIRTUA40 _c7532 _d7538
999			_aVTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5000*5001*5020*5040*5200*6100*6500*6501*9992