Influence of size reduction and current density on the optoelectrical properties of green ill-nitride Micro-LEDs

Dae Hyun Kim, Tae Yeon Seong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In summary, we have systematically investigated size dependent light output, spectra shift in 520 nm InGaN based-uLEDs. Our experimental results confirm that smaller uLEDs can deliver higher power densities and sustain higher current densities. Current density dependence of the EL properties of different-size uLEDs exhibited that the spectral shift was dependent on not only current density but also chip size. The band-combined effects of filling effect and self-heating-induced bandgap shrinkage are responsible for the complicated phenomenon.

Original languageEnglish
Title of host publicationECS Transactions
EditorsJ. Hite, V. Chakrapani, J. Zavada, T. J. Anderson, S. Kilgore
PublisherElectrochemical Society Inc.
Pages13-18
Number of pages6
Edition7
ISBN (Print)9781607688358
DOIs
Publication statusPublished - 2018
EventSymposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting - Seattle, United States
Duration: 2018 May 132018 May 17

Publication series

NameECS Transactions
Number7
Volume85
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting
CountryUnited States
CitySeattle
Period18/5/1318/5/17

ASJC Scopus subject areas

  • Engineering(all)

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