High-temperature analysis of optical coupling using AlGaAs/GaAs LEDs for high-density integrated power modules

Syam Madhusoodhanan; Abbas Sabbar; Huong Tran; Pengyu Lai; David Gonzalez; Alan Mantooth; Shui-Qing Yu; Zhong Chen

doi:10.1038/s41598-022-06858-5

High-temperature analysis of optical coupling using AlGaAs/GaAs LEDs for high-density integrated power modules

Sci Rep. 2022 Feb 24;12(1):3168. doi: 10.1038/s41598-022-06858-5.

Authors

Syam Madhusoodhanan¹, Abbas Sabbar¹, Huong Tran¹, Pengyu Lai¹, David Gonzalez¹, Alan Mantooth¹, Shui-Qing Yu¹, Zhong Chen²

Affiliations

¹ Department of Electrical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA.
² Department of Electrical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA. chenz@uark.edu.

Abstract

A low-temperature co-fired ceramic (LTCC)-based optocoupler design is demonstrated as a possible solution for optical isolation in high-density integrated power modules. The design and fabrication of LTCC based package are discussed. Commercially available aluminum gallium arsenide/gallium arsenide (AlGaAs/GaAs) double heterostructure is used both as emitter and photodetector in the proposed optocoupler. A detailed study on the electroluminescence and spectral response of the AlGaAs/GaAs structure is conducted at elevated temperatures. The material figure of merit parameter, D*, is calculated in the temperature range 77-800 K. The fabricated optocoupler is tested at elevated temperatures, and the results are presented.