Abstract
An application using vertically aligned carbon nanotube (VACNT) as thermal interface material (TIM) in high-brightness LEDs is demonstrated. VACNT arrays have been synthesized on the top and the bottom surfaces of the aluminum heat slugs and integrated into the LED modules using the designed packaging process. The thermal resistance of the LEDs is characterized using the thermal transient test system (MicRed, T3Ster). Compared with silver epoxy, VACNT-TIM shows a comparable thermal performance. It is found that a proper packaging process plays an important role in the final thermal performance of the LEDs with VACNT-TIM.
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