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

Dae Hyun Kim; Tae Yeon Seong

doi:10.1149/08507.0013ecst

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 proceeding › Conference contribution

5 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 language	English
Title of host publication	ECS Transactions
Editors	J. Hite, V. Chakrapani, J. Zavada, T. J. Anderson, S. Kilgore
Publisher	Electrochemical Society Inc.
Pages	13-18
Number of pages	6
Edition	7
ISBN (Electronic)	9781607688358
ISBN (Print)	9781607688358
DOIs	https://doi.org/10.1149/08507.0013ecst
Publication status	Published - 2018
Event	Symposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting - Seattle, United States Duration: 2018 May 13 → 2018 May 17

Publication series

Name	ECS Transactions
Number	7
Volume	85
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Other

Other	Symposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting
Country/Territory	United States
City	Seattle
Period	18/5/13 → 18/5/17

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory program through the National Research Foundation of Korea funded by the Ministry of Science and ICT (NRF-2017K1A1A2013160).

ASJC Scopus subject areas

General Engineering

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10.1149/08507.0013ecst

Cite this

Influence of size reduction and current density on the optoelectrical properties of green ill-nitride Micro-LEDs. / Kim, Dae Hyun; Seong, Tae Yeon.
ECS Transactions. ed. / J. Hite; V. Chakrapani; J. Zavada; T. J. Anderson; S. Kilgore. 7. ed. Electrochemical Society Inc., 2018. p. 13-18 (ECS Transactions; Vol. 85, No. 7).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, DH & Seong, TY 2018, Influence of size reduction and current density on the optoelectrical properties of green ill-nitride Micro-LEDs. in J Hite, V Chakrapani, J Zavada, TJ Anderson & S Kilgore (eds), ECS Transactions. 7 edn, ECS Transactions, no. 7, vol. 85, Electrochemical Society Inc., pp. 13-18, Symposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting, Seattle, United States, 18/5/13. https://doi.org/10.1149/08507.0013ecst

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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.",

author = "Kim, {Dae Hyun} and Seong, {Tae Yeon}",

note = "Funding Information: This work was supported by the Global Research Laboratory program through the National Research Foundation of Korea funded by the Ministry of Science and ICT (NRF-2017K1A1A2013160).; Symposium on Wide Bandgap Semiconductor Materials and Devices 19 - 233rd ECS Meeting ; Conference date: 13-05-2018 Through 17-05-2018",

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AB - 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.

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

Abstract

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Bibliographical note

ASJC Scopus subject areas

Access to Document

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