Recent advances in micron scale III-nitrides based RGB MicroLEDs

Steven P. DenBaars; Shuji Nakamura; Matthew Wong; Jordan Smith; Panpan Li; Jacob Ewing

doi:10.1117/12.3004035

13 March 2024 Recent advances in micron scale III-nitrides based RGB MicroLEDs

Steven P. DenBaars, Shuji Nakamura, Matthew Wong, Jordan Smith, Panpan Li, Jacob Ewing

Proceedings Volume PC12906, Light-Emitting Devices, Materials, and Applications XXVIII; PC129060M (2024) https://doi.org/10.1117/12.3004035
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

The developments of high performance 1-10 micron size InGaN based RGB MicroLEDs are discussed. Through novel epitaxial growth and processing, and transparent packaging we have achieved external quantum efficiencies as high as 58% EQE at 450nm for microLEDs. The critical challenges of µLEDs, namely full-color scheme, decreasing pixel size and mass transfer technique, and their potential solutions are explored. Recently, we have demonstrated efficient microLEDs emitting in the blue to red at dimensions as small of 1 micron. Using strain relaxation methods we have also extending the wavelength range of the InGaN alloys as into the red with emission as long as 640nm. Red InGaN based red MicroLEDs with efficiencies of 6% has been fabricated, and they display superior temperature performance in comparison to AlGaInP based devices. This work was supported by the Solid State Lighting and Energy Electronics Center(SSLEEC) at UC Santa Barbara.

Conference Presentation

Citation Download Citation

Steven P. DenBaars, Shuji Nakamura, Matthew Wong, Jordan Smith, Panpan Li, and Jacob Ewing "Recent advances in micron scale III-nitrides based RGB MicroLEDs", Proc. SPIE PC12906, Light-Emitting Devices, Materials, and Applications XXVIII, PC129060M (13 March 2024); https://doi.org/10.1117/12.3004035

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