4.4 Article Proceedings Paper

Dispenser-printed planar thick-film thermoelectric energy generators

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IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/21/10/104006

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This work presents advancements in dispenser-printed thick film thermoelectric materials for the fabrication of planar and printable thermoelectric energy generators. The thermoelectric properties of the printed thermoelectric materials were measured as a function of temperature. The maximum dimensionless figures of merit (ZTs) at 302 K for the n-type Bi2Te3-epoxy composite and the p-type Sb2Te3-epoxy composite are 0.18 and 0.19, respectively. A 50-couple prototype with 5 mm x 640 mu m x 90 mu m printed element dimensions was fabricated on a polyimide substrate with evaporated metal contacts. The prototype device produced a power output of 10.5 mu W at 61.3 mu A and 171.6 mV for a temperature difference of 20 K resulting in a device areal power density of 75 mu W cm(-2).

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