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https://hdl.handle.net/1822/5525
Título: | Thermoelectric microstructures of Bi2Te3/Sb2Te3 for a self-calibrated micropyrometer |
Autor(es): | Gonçalves, L. M. Couto, Carlos Correia, J. H. Alpuim, P. Rowe, D. M. |
Palavras-chave: | Thermoelectric Thin-film Pyrometer Peltier micro-cooler Bi2Te3 Bi Te 2 3 |
Data: | Ago-2006 |
Editora: | Elsevier 1 |
Revista: | Sensors & Actuators : a Physical |
Citação: | "Sensors & actuators : A physical". ISSN 0924-4247. 130-131 (Aug. 2006) 346-351. |
Resumo(s): | The fabrication of thermopiles suitable for thermoelectric cooling and energy generation using Bi2Te3 and Sb2Te3 as n- and p-type layers, respectively, is reported. The thin-film thermoelectric material deposition process, thin-film electronic characterization and device simulation is addressed. The thermoelectric thin-films were deposited by co-evaporation of Bi and Te, for the n-type element and Sb and Te, for the p-type element. Seebeck coefficients of −190 and +150 uVK−1 and electrical resistivities of 8 and 15 uOhm.m were measured at room temperature on Bi2Te3 and Sb2Te3 films, respectively. These values are better than those reported in the literature for films deposited by co-sputtering or electrochemical deposition and are close to those reported for films deposited by metal-organic chemical vapour deposition and flash evaporation. A small device with a cold area of 4mm×4mm and four pairs of p–n junctions was fabricated on a Kapton® substrate, showing the possibility of application in Peltier cooling, infrared detection and energy generation. Small devices fabricated on a polyimide (Kapton®) substrate and micro-devices fabricated on a silicon nitride substrate were simulated using finite element analysis. The simulations show the possibility of achieving near 20K cooling over 1mm2 areas. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/5525 |
DOI: | 10.1016/j.sna.2005.10.014 |
ISSN: | 0924-4247 |
Versão da editora: | www.sciencedirect.com |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) DEI - Artigos em revistas internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Article Sensors actuators.pdf | 478,67 kB | Adobe PDF | Ver/Abrir |