期刊
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
卷 17, 期 7, 页码 S168-S173出版社
IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/17/7/S14
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The present work reports on the fabrication and characterization of a planar Peltier cooler on a flexible substrate. The device was fabricated on a 12 mu m thick Kapton(c) polyimide substrate using Bi2Te3 and Sb2Te3 thermoelectric elements deposited by thermal co-evaporation. The cold area of the device is cooled with four thermoelectric junctions, connected in series using metal contacts. Plastic substrates add uncommon mechanical properties to the composite film-substrate and enable integration with novel types of flexible electronic devices. Films were deposited by co- evaporation of tellurium and bismuth or antimony to obtain Bi2Te3 or Sb(2)eTe(3), respectively. Patterning of the thermoelectric materials using lift-off and wet-etching techniques was studied and compared. The performance of the Peltier microcooler was analysed by infrared image microscopy, on still-air and under vacuum conditions, and a maximum temperature difference of 5 degrees C was measured between the cold and the hot sides of the device.
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