Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes
Abstract This paper proposes a new encapsulation structure for aluminum nitride-based deep UV light-emitting diodes (DUV-LEDs) and eutectic flip chips containing polydimethylsiloxane (PDMS) fluid doped with SiO2 nanoparticles (NPs) with a UV-transparent quartz hemispherical glass cover. Experimental...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
SpringerOpen
2019-07-01
|
Series: | Nanoscale Research Letters |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1186/s11671-019-3067-y |
id |
doaj-2d8c454b94d040a8b9a1ce4b85eb2f7e |
---|---|
record_format |
Article |
spelling |
doaj-2d8c454b94d040a8b9a1ce4b85eb2f7e2020-11-25T03:45:56ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2019-07-011411610.1186/s11671-019-3067-yNanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting DiodesZhi Ting Ye0Yung-Min Pai1Chih-Hao Lin2Lung-Chien Chen3Hong Thai Nguyen4Hsiang-Chen Wang5Department of Electro-Optical Engineering, National United UniversityDepartment of Photonics, National Chiao Tung UniversityDepartment of Photonics, National Chiao Tung UniversityDepartment of Electro-Optical Engineering, National Taipei University of TechnologyDepartment of Mechanical Engineering and Advanced Institute of Manufacturing with High-tech Innovations, National Chung Cheng UniversityDepartment of Mechanical Engineering and Advanced Institute of Manufacturing with High-tech Innovations, National Chung Cheng UniversityAbstract This paper proposes a new encapsulation structure for aluminum nitride-based deep UV light-emitting diodes (DUV-LEDs) and eutectic flip chips containing polydimethylsiloxane (PDMS) fluid doped with SiO2 nanoparticles (NPs) with a UV-transparent quartz hemispherical glass cover. Experimental results reveal that the proposed encapsulation structure has considerably higher light output power than the traditional one. The light extraction efficiency was increased by 66.49% when the forward current of the DUV-LED was 200 mA. Doping the PDMS fluid with SiO2 NPs resulted in higher light output power than that of undoped fluid. The maximum efficiency was achieved at a doping concentration of 0.2 wt%. The optical output power at 200 mA forward current of the encapsulation structure with NP doping of the fluid was 15% higher than that without NP doping. The optical output power of the proposed encapsulation structure was 81.49% higher than that of the traditional encapsulation structure. The enhanced light output power was due to light scattering caused by the SiO2 NPs and the increased average refractive index. The encapsulation temperature can be reduced by 4 °C at a driving current of 200 mA by using the proposed encapsulation structure.http://link.springer.com/article/10.1186/s11671-019-3067-yDUV-LEDsPDMSNanoparticleLight extraction efficiencyFlip chip |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhi Ting Ye Yung-Min Pai Chih-Hao Lin Lung-Chien Chen Hong Thai Nguyen Hsiang-Chen Wang |
spellingShingle |
Zhi Ting Ye Yung-Min Pai Chih-Hao Lin Lung-Chien Chen Hong Thai Nguyen Hsiang-Chen Wang Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes Nanoscale Research Letters DUV-LEDs PDMS Nanoparticle Light extraction efficiency Flip chip |
author_facet |
Zhi Ting Ye Yung-Min Pai Chih-Hao Lin Lung-Chien Chen Hong Thai Nguyen Hsiang-Chen Wang |
author_sort |
Zhi Ting Ye |
title |
Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes |
title_short |
Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes |
title_full |
Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes |
title_fullStr |
Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes |
title_full_unstemmed |
Nanoparticle-Doped Polydimethylsiloxane Fluid Enhances the Optical Performance of AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes |
title_sort |
nanoparticle-doped polydimethylsiloxane fluid enhances the optical performance of algan-based deep-ultraviolet light-emitting diodes |
publisher |
SpringerOpen |
series |
Nanoscale Research Letters |
issn |
1931-7573 1556-276X |
publishDate |
2019-07-01 |
description |
Abstract This paper proposes a new encapsulation structure for aluminum nitride-based deep UV light-emitting diodes (DUV-LEDs) and eutectic flip chips containing polydimethylsiloxane (PDMS) fluid doped with SiO2 nanoparticles (NPs) with a UV-transparent quartz hemispherical glass cover. Experimental results reveal that the proposed encapsulation structure has considerably higher light output power than the traditional one. The light extraction efficiency was increased by 66.49% when the forward current of the DUV-LED was 200 mA. Doping the PDMS fluid with SiO2 NPs resulted in higher light output power than that of undoped fluid. The maximum efficiency was achieved at a doping concentration of 0.2 wt%. The optical output power at 200 mA forward current of the encapsulation structure with NP doping of the fluid was 15% higher than that without NP doping. The optical output power of the proposed encapsulation structure was 81.49% higher than that of the traditional encapsulation structure. The enhanced light output power was due to light scattering caused by the SiO2 NPs and the increased average refractive index. The encapsulation temperature can be reduced by 4 °C at a driving current of 200 mA by using the proposed encapsulation structure. |
topic |
DUV-LEDs PDMS Nanoparticle Light extraction efficiency Flip chip |
url |
http://link.springer.com/article/10.1186/s11671-019-3067-y |
work_keys_str_mv |
AT zhitingye nanoparticledopedpolydimethylsiloxanefluidenhancestheopticalperformanceofalganbaseddeepultravioletlightemittingdiodes AT yungminpai nanoparticledopedpolydimethylsiloxanefluidenhancestheopticalperformanceofalganbaseddeepultravioletlightemittingdiodes AT chihhaolin nanoparticledopedpolydimethylsiloxanefluidenhancestheopticalperformanceofalganbaseddeepultravioletlightemittingdiodes AT lungchienchen nanoparticledopedpolydimethylsiloxanefluidenhancestheopticalperformanceofalganbaseddeepultravioletlightemittingdiodes AT hongthainguyen nanoparticledopedpolydimethylsiloxanefluidenhancestheopticalperformanceofalganbaseddeepultravioletlightemittingdiodes AT hsiangchenwang nanoparticledopedpolydimethylsiloxanefluidenhancestheopticalperformanceofalganbaseddeepultravioletlightemittingdiodes |
_version_ |
1724508802385969152 |