NDLI: Impact of Material Properties on Cooling COP of Integrated Thermoelectric Microcoolers

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Koh, Yee Rui Yazawa, Kazuaki Shakouri, Ali
Copyright Year	2013
Abstract	Thermoelectric (TE) microcooling is promising for removing hotspots in integrated circuit chips. The cooling coefficient-of-performance (COP) of the on-chip thin film or superlattice micro-cooler (SLC) is a metric for assessing the energy efficiency of the hot spot removal. The COP is key for lowering total power consumption and minimizing heat sinking requirements. Due to the moderate performance compared to vapor compression cycles, researchers have devoted considerable effort to improving the figure-of-merit (ZT) of the material over the past decade. However, the impact of each of the individual thermoelectric properties has not been studied separately. We report our study based on an analytical model and analysis results that show the intrinsic impact of electrical conductivity, the Seebeck coefficient, and thermal conductivity, while the device thickness and the drive current are optimized for maximizing cooling COP. The results show that the power factor of the TE materials is a more important parameter than thermal conductivity reduction for improving the cooling performance of the on chip SLC.
Sponsorship	Electronic and Photonic Packaging Division
File Format	PDF
ISBN	9780791855768
DOI	10.1115/IPACK2013-73184
Volume Number	Volume 2: Thermal Management; Data Centers and Energy Efficient Electronic Systems
Conference Proceedings	ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
Language	English
Publisher Date	2013-07-16
Publisher Place	Burlingame, California, USA
Access Restriction	Subscribed
Subject Keyword	Cycles Energy consumption Compression Cooling Electrical conductivity Vapors Integrated circuits Thin films Heat Superlattices Materials properties Microcoolers Thermal conductivity Energy efficiency
Content Type	Text
Resource Type	Article

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