Wednesday, May 2025

11:20 AM - 11:40 AM

Room: LL21EF

Session: microLED Devices II

Study on Indium Composition-Related Leakage Current Behavior Through Analysis of Spatial Electroluminescence Inhomogeneity in Blue and Green Micro Light-Emitting Diodes

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  Associate professor

  Jaekyun Kim , PhD

  Hanyang University

Description:

Electroluminescence EL spectra are investigated by use of a confocal scanning optical microscopy for InGaN-based blue and green micro-sized light-emitting diodes (?LEDs) to correlate nanoscale emission and macroscopic electrical characteristics. The study reveals that the inhomogeneity in the emission wavelength of green ?LEDs, compared to blue ?LEDs, is linked to their relatively lower leakage current due to suppressed lateral diffusion and non-radiative recombination at the sidewall.