Cooling performance enhancement of LED (light emitting diode) packages with carbon nanogrease

Seong Rim Nam, Chung Woo Jung, Chang Hwan Choi, Yong Tae Kang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

LED (light emitting diode) technology has been developed rapidly in recent years in the area of illumination applications. However, the rate of heat generation increases with the LED illumination intensity. The LED chip temperature is critical to determine the LED lifetime and efficiency. In this study, the thermal conductivities of grease mixed with four different nanoparticles - MWCNT (multi-walled carbon nanotube), silver, copper (II) oxide, and aluminum oxide (Al2O3) are measured by using a solid thermal conductivity measurement system. It is found that the measured thermal conductivities of the grease with MWCNT, silver, copper (II) oxide, and aluminum oxide enhance up to 82.8, 26, 58.8 and 40% at 1.0wt%, respectively, compared with that of the pure grease. Results confirm that the MWCNT grease is the best candidate out of the four different nanoparticles-based greases for the LED package cooling performance.

Original languageEnglish
Pages (from-to)195-203
Number of pages9
JournalEnergy
Volume60
DOIs
Publication statusPublished - 2013 Oct 1
Externally publishedYes

Fingerprint

Lubricating greases
Light emitting diodes
Cooling
Carbon
Carbon nanotubes
Copper oxides
Thermal conductivity
Silver
Thermal conductivity of solids
Lighting
Nanoparticles
Aluminum
Oxides
Heat generation
Temperature

Keywords

  • Carbon nanotube
  • Light emitting diode
  • Thermal conductivity
  • Thermal grease

ASJC Scopus subject areas

  • Energy(all)
  • Pollution

Cite this

Cooling performance enhancement of LED (light emitting diode) packages with carbon nanogrease. / Nam, Seong Rim; Jung, Chung Woo; Choi, Chang Hwan; Kang, Yong Tae.

In: Energy, Vol. 60, 01.10.2013, p. 195-203.

Research output: Contribution to journalArticle

Nam, Seong Rim ; Jung, Chung Woo ; Choi, Chang Hwan ; Kang, Yong Tae. / Cooling performance enhancement of LED (light emitting diode) packages with carbon nanogrease. In: Energy. 2013 ; Vol. 60. pp. 195-203.
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AB - LED (light emitting diode) technology has been developed rapidly in recent years in the area of illumination applications. However, the rate of heat generation increases with the LED illumination intensity. The LED chip temperature is critical to determine the LED lifetime and efficiency. In this study, the thermal conductivities of grease mixed with four different nanoparticles - MWCNT (multi-walled carbon nanotube), silver, copper (II) oxide, and aluminum oxide (Al2O3) are measured by using a solid thermal conductivity measurement system. It is found that the measured thermal conductivities of the grease with MWCNT, silver, copper (II) oxide, and aluminum oxide enhance up to 82.8, 26, 58.8 and 40% at 1.0wt%, respectively, compared with that of the pure grease. Results confirm that the MWCNT grease is the best candidate out of the four different nanoparticles-based greases for the LED package cooling performance.

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