Presentation
5 March 2022 InGaN blue light-emitting micro-diodes with current path defined by tunnel junction
Author Affiliations +
Abstract
In this paper, we try to resolve problems related to decreasing the size of an LED, and find a solution that would let us preserve optoelectronics parameters. The main idea is to use tunnel junctions to define the current path and, therefore, define the size of µLED. This way, during fabrication, there is no need to etch the active region. That way, it does not introduce any degradation nor problems related to surface states or differences in electrical fields inside the device. We have fabricated such devices with sizes ranging from 100 µm-5 µm. In the characterization of these devices, it became apparent that, both electrical and optical parameters, are fully scalable with size. Most importantly, we do not observe an increase in the non-radiative recombination coefficient even for the smallest device. In addition, we observe excellent thermal stability of their light emission characteristics.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Krzysztof Gibasiewicz, Agata Bojarska-Cieślińska, Grzegorz Muziol, Czeslaw Skierbiszewski, Szymon Grzanka, Anna Kafar, Piotr Perlin, Stephen Najda, Tadeusz Suski, and Lucja Marona "InGaN blue light-emitting micro-diodes with current path defined by tunnel junction", Proc. SPIE PC12001, Gallium Nitride Materials and Devices XVII, PC120010Z (5 March 2022); https://doi.org/10.1117/12.2609763
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KEYWORDS
Indium gallium nitride

Light emitting diodes

Display technology

Optoelectronics

Etching

LCDs

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