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Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications

Thermal issue in high power LEDs greatly impacts the performance of LED lighting in terms of its reliability and durability. Thermal interface materials have been recommended to improve heat dissipation as they are capable in conducting heat effectively between heat source and the heat sink. In this...

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Main Author: Hashim, Nur Hasyimah
Format: Thesis
Language:English
Published: 2019
Subjects:
QC1-999 Physics
Online Access:http://eprints.usm.my/48232/1/Nur%20Hasyimah%20%28920312065412%29-%20MSc%20Thesis%20cut.pdf
http://eprints.usm.my/48232/
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spelling my.usm.eprints.48232 http://eprints.usm.my/48232/ Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications Hashim, Nur Hasyimah QC1-999 Physics Thermal issue in high power LEDs greatly impacts the performance of LED lighting in terms of its reliability and durability. Thermal interface materials have been recommended to improve heat dissipation as they are capable in conducting heat effectively between heat source and the heat sink. In this project, zinc oxide (ZnO) and two types metal impregnated ZnO (Copper and Silver) thin films were deposited on Aluminium substrates via sol-gel spin coating technique. The deposition parameters of ZnO thin films such as number of coating cycle and sol-gel concentration were varied to obtain good quality ZnO thin films. After the optimization of ZnO thin films, metal impregnated ZnO thin films were produced at concentration 0.03M, 0.06M, 0.09M. The structural properties of the thin films were investigate using XRD while surface morphology and topology of films were analysed through FESEM and AFM respectively. Thermal performance of the thin films were tested using T3Ster where high power LEDs mounted on coated substrates. X-ray diffraction results showed three major ZnO peak (100, 002, 101) with hexagonal crystal structure for all coated samples. Structural analysis of ZnO thin films showed the increment of crystallite size from 13.80 nm to 34.35 nm while FWHM reduced from 0.631º to 0.254º when number of coating cycles increased from 5 coating cycles to 20 coating cycles. However, as the ZnO concentration increased from 0.5M to 3.0M the crystallite size reduced from 34.35 nm to 29.04nm while FWHM increased from 0.254º to 0.301º. The intensity of ZnO peaks were decreased as both metal introduced into ZnO. 2019-08 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/48232/1/Nur%20Hasyimah%20%28920312065412%29-%20MSc%20Thesis%20cut.pdf Hashim, Nur Hasyimah (2019) Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications. Masters thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic QC1-999 Physics
spellingShingle QC1-999 Physics
Hashim, Nur Hasyimah
Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications
description Thermal issue in high power LEDs greatly impacts the performance of LED lighting in terms of its reliability and durability. Thermal interface materials have been recommended to improve heat dissipation as they are capable in conducting heat effectively between heat source and the heat sink. In this project, zinc oxide (ZnO) and two types metal impregnated ZnO (Copper and Silver) thin films were deposited on Aluminium substrates via sol-gel spin coating technique. The deposition parameters of ZnO thin films such as number of coating cycle and sol-gel concentration were varied to obtain good quality ZnO thin films. After the optimization of ZnO thin films, metal impregnated ZnO thin films were produced at concentration 0.03M, 0.06M, 0.09M. The structural properties of the thin films were investigate using XRD while surface morphology and topology of films were analysed through FESEM and AFM respectively. Thermal performance of the thin films were tested using T3Ster where high power LEDs mounted on coated substrates. X-ray diffraction results showed three major ZnO peak (100, 002, 101) with hexagonal crystal structure for all coated samples. Structural analysis of ZnO thin films showed the increment of crystallite size from 13.80 nm to 34.35 nm while FWHM reduced from 0.631º to 0.254º when number of coating cycles increased from 5 coating cycles to 20 coating cycles. However, as the ZnO concentration increased from 0.5M to 3.0M the crystallite size reduced from 34.35 nm to 29.04nm while FWHM increased from 0.254º to 0.301º. The intensity of ZnO peaks were decreased as both metal introduced into ZnO.
format Thesis
author Hashim, Nur Hasyimah
author_facet Hashim, Nur Hasyimah
author_sort Hashim, Nur Hasyimah
title Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications
title_short Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications
title_full Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications
title_fullStr Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications
title_full_unstemmed Study Of Metal Impregnated Zno Thin Film As Thermal Interface For High Power Led Applications
title_sort study of metal impregnated zno thin film as thermal interface for high power led applications
publishDate 2019
url http://eprints.usm.my/48232/1/Nur%20Hasyimah%20%28920312065412%29-%20MSc%20Thesis%20cut.pdf
http://eprints.usm.my/48232/
_version_ 1691733873477550080
score 13.211869

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