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
PublisherElectrochemical Society Inc.
Pages13-18
Number of pages6
Volume85
Edition7
ISBN (Electronic)9781607685395
Publication statusPublished - 2018 Jan 1
EventSymposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting - Seattle, United States
Duration: 2018 May 132018 May 17

Other

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

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kim, D. H., & Seong, T. Y. (2018). Influence of size reduction and current density on the optoelectrical properties of green ill-nitride Micro-LEDs. In ECS Transactions (7 ed., Vol. 85, pp. 13-18). Electrochemical Society Inc..