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Title: Design and optimization of high temperature optocouplers as galvanic isolation

Abstract

The commercial InGaN-based (blue and green) and AlGaInP-based (red) multiple quantum well (MQW) lighting emitting diodes (LEDs) were studied in a wide range of temperatures up to 800 K for their light emission and detection (i.e., LEDs operated under reverse bias as photodiodes (PDs)) characteristics. The results indicate the feasibility of integrating a pair of selected LEDs to fabricate high temperature (HT) optocouplers, which can be utilized as galvanic isolation to replace the bulky isolation transforms in the high-density power modules. A detailed study on LEDs and PDs were performed. The external quantum efficiency (EQE) of the LED and PDs were calculated. Higher relative external quantum efficiency (EQE) and lower efficiency droops with temperatures are obtained from the blue and green LEDs for display compared with the blue one for lighting and red LED for display. The blue for lighting and red for display devices show superior responsivity, specific detectivity (D*), and EQE compared with blue and green for display when operated as PDs. The results suggest that red LED devices for display can be used to optimize HT optocouplers due to the highest wavelength overlapping compared with others.

Authors:
 [1];  [1];  [1];  [2];  [2];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Univ. of Arkansas, Fayetteville, AR (United States)
  2. HC SemiTek, Suzhou (China)
Publication Date:
Research Org.:
Univ. of Arkansas, Fayetteville, AR (United States)
Sponsoring Org.:
USDOE Office of Science (SC); US Army Research Laboratory (USARL)
OSTI Identifier:
1904416
Grant/Contract Number:  
SC0016485; W911NF1920231
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 12; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; engineering; materials science; physics

Citation Formats

Sabbar, Abbas, Madhusoodhanan, Syam, Tran, Huong, Dong, Binzhong, Wang, Jiangbo, Mantooth, Alan, Yu, Shui-Qing, and Chen, Zhong. Design and optimization of high temperature optocouplers as galvanic isolation. United States: N. p., 2022. Web. doi:10.1038/s41598-021-04145-3.
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Sabbar, Abbas, Madhusoodhanan, Syam, Tran, Huong, Dong, Binzhong, Wang, Jiangbo, Mantooth, Alan, Yu, Shui-Qing, & Chen, Zhong. Design and optimization of high temperature optocouplers as galvanic isolation. United States. https://doi.org/10.1038/s41598-021-04145-3
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Sabbar, Abbas, Madhusoodhanan, Syam, Tran, Huong, Dong, Binzhong, Wang, Jiangbo, Mantooth, Alan, Yu, Shui-Qing, and Chen, Zhong. Wed . "Design and optimization of high temperature optocouplers as galvanic isolation". United States. https://doi.org/10.1038/s41598-021-04145-3. https://www.osti.gov/servlets/purl/1904416.
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@article{osti_1904416,
title = {Design and optimization of high temperature optocouplers as galvanic isolation},
author = {Sabbar, Abbas and Madhusoodhanan, Syam and Tran, Huong and Dong, Binzhong and Wang, Jiangbo and Mantooth, Alan and Yu, Shui-Qing and Chen, Zhong},
abstractNote = {The commercial InGaN-based (blue and green) and AlGaInP-based (red) multiple quantum well (MQW) lighting emitting diodes (LEDs) were studied in a wide range of temperatures up to 800 K for their light emission and detection (i.e., LEDs operated under reverse bias as photodiodes (PDs)) characteristics. The results indicate the feasibility of integrating a pair of selected LEDs to fabricate high temperature (HT) optocouplers, which can be utilized as galvanic isolation to replace the bulky isolation transforms in the high-density power modules. A detailed study on LEDs and PDs were performed. The external quantum efficiency (EQE) of the LED and PDs were calculated. Higher relative external quantum efficiency (EQE) and lower efficiency droops with temperatures are obtained from the blue and green LEDs for display compared with the blue one for lighting and red LED for display. The blue for lighting and red for display devices show superior responsivity, specific detectivity (D*), and EQE compared with blue and green for display when operated as PDs. The results suggest that red LED devices for display can be used to optimize HT optocouplers due to the highest wavelength overlapping compared with others.},
doi = {10.1038/s41598-021-04145-3},
journal = {Scientific Reports},
number = 1,
volume = 12,
place = {United States},
year = {Wed Feb 09 00:00:00 EST 2022},
month = {Wed Feb 09 00:00:00 EST 2022}
}
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Publisher's Version of Record
https://doi.org/10.1038/s41598-021-04145-3
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