Carbon nanotube thermal interface material for high-brightness light-emitting-diode cooling

K. Zhang, Yang Chai, M. M.F. Yuen, D. G.W. Xiao, Philip Ching Ho Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

127 Citations (Scopus)

Abstract

Aligned carbon nanotube (CNT) arrays were fabricated from a multilayer catalyst configuration by microwave plasma-enhanced chemical vapor deposition (PECVD). The effects of the thickness and annealing of the aluminum layer on the CNT synthesis and thermal performance were investigated. An experimental study of thermal resistance across the CNT array interface using the modified ASTM D5470 standard was conducted. It was demonstrated that the CNT-thermal interface material (CNT-TIM) reduced the thermal interfacial resistance significantly compared with the state-of-art commercial TIM. The optimized thermal resistance of the CNT arrays is as low as 7 mm2K W-1. The light performance of high-brightness light-emitting diode (HB-LED) packages using the aligned CNT-TIM was tested. The results indicated that the light output power was greatly improved with the use of the CNT-TIM. The usage of the CNT-TIM can be also extended to other microelectronics thermal management applications.
Original languageEnglish
Article number215706
JournalNanotechnology
Volume19
Issue number21
DOIs
Publication statusPublished - 28 May 2008
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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