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

초록

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

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