Academic Journal
Thermoelectric microstructures of Bi2Te3/Sb2Te3 for a self-calibrated micropyrometer
| العنوان: | Thermoelectric microstructures of Bi2Te3/Sb2Te3 for a self-calibrated micropyrometer |
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| المؤلفون: | Gonçalves, L. M., Couto, Carlos, Correia, J. H., Alpuim, P., Rowe, D. M. |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2006 |
| المجموعة: | Universidade of Minho: RepositóriUM |
| مصطلحات موضوعية: | Thermoelectric, Thin-film, Pyrometer, Peltier, micro-cooler, Bi2Te3, Bi Te 2 3, Science & Technology |
| الوصف: | 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. ; Fundação para a Ciência e a Tecnologia (FCT) |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0924-4247 |
| Relation: | www.sciencedirect.com; "Sensors & actuators : A physical". ISSN 0924-4247. 130-131 (Aug. 2006) 346-351.; http://hdl.handle.net/1822/5525 |
| DOI: | 10.1016/j.sna.2005.10.014 |
| الاتاحة: | http://hdl.handle.net/1822/5525 https://doi.org/10.1016/j.sna.2005.10.014 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.3809109F |
| قاعدة البيانات: | BASE |
| تدمد: | 09244247 |
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| DOI: | 10.1016/j.sna.2005.10.014 |