Delving into the Latest Updates on Korea Aerospace University with Synapse

Overview

Abstract: Improving carrier injection for radiative recombination in GaN light-emitting diodes (LEDs) has been a major focus for several decades.In this study, the performance of GaN LEDs was enhanced through the construction of an Si/GaN tunnel junction (TJ) via nanomembrane (NM) stacking.The n + Si nanomembrane was transfer printed onto the p + GaN layer, resulting in an n + Si/p + GaN TJ on top of the GaN epi-structure.The radiative recombination of electron-hole pairs was enhanced by the tunneling of carriers across the Si/GaN TJ into the InGaN/GaN multi-quantum wells.The improved hole injection was elucidated through the energy band diagram of the Si/GaN TJ.The increased number of injected holes in the stacked Si/GaN TJ LED leads to enhanced radiative recombination, resulting in greater output power and external quantum efficiency (EQE).Specifically, the light output power improved by 96% at 30 A/cm², and the peak EQE increased by 36% due to the formation of the stacked Si/GaN TJ on the LED.These findings can be applied to the manufacturing of electronic devices, where balancing carrier generation and injection is crucial for operational efficiency.

01 Jan 2025·IEEE Access

Gaussian Mixture Model-Based Vector Approach to Real-Time Three-Dimensional Path Planning in Cluttered Environment

Author: Ko, Sangho ; Tullu, Abera ; Cho, Yunsang

01 Jan 2025·IEEE Sensors Journal

Complex-Valued Neural Network for Estimating the Number of Sources in Radar Systems

Author: Lee, Seongwook ; Cho, Seonmin ; Jeong, Taewon ; Kwak, Seungheon

100 Deals associated with Korea Aerospace University

Login to view more data

100 Translational Medicine associated with Korea Aerospace University

Login to view more data