A thermal analysis of the operation of microscale, inorganic light-emitting diodes

Chaofeng Lu; Yuhang Li; Jizhou Song; Hoon Sik Kim; Eric Brueckner; Bo Fang; Keh Chih Hwang; Yonggang Huang; Ralph G. Nuzzo; John A. Rogers

doi:10.1098/rspa.2012.0225

A thermal analysis of the operation of microscale, inorganic light-emitting diodes

Chaofeng Lu, Yuhang Li, Jizhou Song, Hoon Sik Kim, Eric Brueckner, Bo Fang, Keh Chih Hwang, Yonggang Huang, Ralph G. Nuzzo, John A. Rogers

Research output: Contribution to journal › Article › peer-review

Abstract

An analytical model is developed to study the thermal properties of microscale, inorganic light-emitting diodes (μ-ILEDs) with ultra-thin geometries and layouts. The predicted surface and μ-ILED temperatures agree well with experiments and finite-element simulations. A simple scaling law is obtained for the normalized μ-ILED temperature versus the normalized μ-ILED size. This study provides a theory to guide the design of layouts that minimize adverse thermal effects on the performance of μ-ILEDs not only for solid-state lighting but also for applications integrating μ-ILED devices on complex/soft substrate as are currently of interest in optogenetics and other emerging areas in biology.

Original language	English (US)
Pages (from-to)	3215-3223
Number of pages	9
Journal	Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume	468
Issue number	2146
DOIs	https://doi.org/10.1098/rspa.2012.0225
State	Published - Oct 8 2012
Externally published	Yes

Keywords

Gallium nitride
Solid-state lighting
Thermal analysis

ASJC Scopus subject areas

Mathematics(all)
Engineering(all)
Physics and Astronomy(all)

Online availability

10.1098/rspa.2012.0225

Library availability

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title = "A thermal analysis of the operation of microscale, inorganic light-emitting diodes",

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AU - Li, Yuhang

AU - Song, Jizhou

AU - Kim, Hoon Sik

AU - Brueckner, Eric

AU - Fang, Bo

AU - Hwang, Keh Chih

AU - Huang, Yonggang

AU - Nuzzo, Ralph G.

AU - Rogers, John A.

PY - 2012/10/8

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N2 - An analytical model is developed to study the thermal properties of microscale, inorganic light-emitting diodes (μ-ILEDs) with ultra-thin geometries and layouts. The predicted surface and μ-ILED temperatures agree well with experiments and finite-element simulations. A simple scaling law is obtained for the normalized μ-ILED temperature versus the normalized μ-ILED size. This study provides a theory to guide the design of layouts that minimize adverse thermal effects on the performance of μ-ILEDs not only for solid-state lighting but also for applications integrating μ-ILED devices on complex/soft substrate as are currently of interest in optogenetics and other emerging areas in biology.

AB - An analytical model is developed to study the thermal properties of microscale, inorganic light-emitting diodes (μ-ILEDs) with ultra-thin geometries and layouts. The predicted surface and μ-ILED temperatures agree well with experiments and finite-element simulations. A simple scaling law is obtained for the normalized μ-ILED temperature versus the normalized μ-ILED size. This study provides a theory to guide the design of layouts that minimize adverse thermal effects on the performance of μ-ILEDs not only for solid-state lighting but also for applications integrating μ-ILED devices on complex/soft substrate as are currently of interest in optogenetics and other emerging areas in biology.

KW - Gallium nitride

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KW - Thermal analysis

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A thermal analysis of the operation of microscale, inorganic light-emitting diodes

Abstract

Keywords

ASJC Scopus subject areas

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