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Enhanced performance of dispenser printed MA n-type Bi₂Te₃ composite thermoelectric generators.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2012 Nov; Vol. 4 (11), pp. 6117-24. Date of Electronic Publication: 2012 Nov 15. - Publication Year :
- 2012
-
Abstract
- This work presents performance advancements of dispenser printed composite thermoelectric materials and devices. Dispenser printed thick films allow for low-cost and scalable manufacturing of microscale energy harvesting devices. A maximum ZT value of 0.31 has been achieved for mechanically alloyed (MA) n-type Bi₂Te₃-epoxy composite films with 1 wt % Se cured at 350 °C. The enhancement of ZT is a result of increase in the electrical conductivity through the addition of Se, which ultimately lowers the sintering temperature (350 °C). A 62 single-leg thermoelectric generator (TEG) prototype with 5 mm ×700 μm × 120 μm printed element dimensions was fabricated on a custom designed polyimide substrate with thick metal contacts. The prototype device produced a power output of 25 μW at 0.23 mA current and 109 mV voltage for a temperature difference of 20 °C, which is sufficient for low power generation for autonomous microsystem applications.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 4
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 23130550
- Full Text :
- https://doi.org/10.1021/am301759a