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Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth

Light extraction efficiency (LEE) is an important factor for Light Emitting Diodes (LED). As of today, most LEE improvement methods involve complex fabrication either on the finished LED chip or during the LED processing itself. In this study, micro repeating structures (MRS) are constructed using s...

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Main Author: Joshua Gan, Oon Joo
Format: Thesis
Language:English
Published: 2018
Subjects:
T Technology
TN Mining Engineering. Metallurgy
Online Access:http://eprints.usm.my/56385/1/Improvement%20Of%20Led%20Light%20Extraction%20Efficiency%20By%20Silica%20Micro%20Repeating%20Structure%20Growth_Joshua%20Gan%20Oon%20Joo.pdf
http://eprints.usm.my/56385/
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spelling my.usm.eprints.56385 http://eprints.usm.my/56385/ Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth Joshua Gan, Oon Joo T Technology TN Mining Engineering. Metallurgy Light extraction efficiency (LEE) is an important factor for Light Emitting Diodes (LED). As of today, most LEE improvement methods involve complex fabrication either on the finished LED chip or during the LED processing itself. In this study, micro repeating structures (MRS) are constructed using silica micro repeating structure growth (SMRSG) to improve LEE. In contrast to other complex fabrication methods, the SMRSG was done through a Stöber solution growth method. The solution preparation was relatively simple, using tetraethyl orthosilicate (TEOS), surfactant and solvents. The LEE result of the LED after SMRSG was characterized through using a spectrophotometer. It showed an average of 0.77% increment in brightness for unroughened LED. A separate study on using sodium hydroxide (NaOH) for post LED fabrication cleaning was also conducted. A new discovery was achieved where the brightness of the LED was increased by 5.05% and 1.11% for roughened and unroughened LED respectively. The short cleaning time (30 seconds) with NaOH was to clean the LED surface from contaminants. This suggests that the presence of the SMRSG which is an MRS and cleaning of the LED surface was able to change the LEE of the LED. 2018-08-01 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/56385/1/Improvement%20Of%20Led%20Light%20Extraction%20Efficiency%20By%20Silica%20Micro%20Repeating%20Structure%20Growth_Joshua%20Gan%20Oon%20Joo.pdf Joshua Gan, Oon Joo (2018) Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth. 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 T Technology
TN Mining Engineering. Metallurgy
spellingShingle T Technology
TN Mining Engineering. Metallurgy
Joshua Gan, Oon Joo
Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth
description Light extraction efficiency (LEE) is an important factor for Light Emitting Diodes (LED). As of today, most LEE improvement methods involve complex fabrication either on the finished LED chip or during the LED processing itself. In this study, micro repeating structures (MRS) are constructed using silica micro repeating structure growth (SMRSG) to improve LEE. In contrast to other complex fabrication methods, the SMRSG was done through a Stöber solution growth method. The solution preparation was relatively simple, using tetraethyl orthosilicate (TEOS), surfactant and solvents. The LEE result of the LED after SMRSG was characterized through using a spectrophotometer. It showed an average of 0.77% increment in brightness for unroughened LED. A separate study on using sodium hydroxide (NaOH) for post LED fabrication cleaning was also conducted. A new discovery was achieved where the brightness of the LED was increased by 5.05% and 1.11% for roughened and unroughened LED respectively. The short cleaning time (30 seconds) with NaOH was to clean the LED surface from contaminants. This suggests that the presence of the SMRSG which is an MRS and cleaning of the LED surface was able to change the LEE of the LED.
format Thesis
author Joshua Gan, Oon Joo
author_facet Joshua Gan, Oon Joo
author_sort Joshua Gan, Oon Joo
title Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth
title_short Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth
title_full Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth
title_fullStr Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth
title_full_unstemmed Improvement Of Led Light Extraction Efficiency By Silica Micro Repeating Structure Growth
title_sort improvement of led light extraction efficiency by silica micro repeating structure growth
publishDate 2018
url http://eprints.usm.my/56385/1/Improvement%20Of%20Led%20Light%20Extraction%20Efficiency%20By%20Silica%20Micro%20Repeating%20Structure%20Growth_Joshua%20Gan%20Oon%20Joo.pdf
http://eprints.usm.my/56385/
_version_ 1755873175581753344
score 13.211869

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