Low-temperature characterization and micropatterning of coevaporated Bi2Te3 and Sb2Te3 films
نویسندگان
چکیده
Bi2Te3 and Sb2Te3 films Baoling Huang, Chris Lawrence, Andrew Gross, Gi-Suk Hwang, Niloufar Ghafouri, Sang-Woo Lee, Hanseup Kim, Chang-Peng Li, Ctirad Uher, Khalil Najafi, and Massoud Kaviany Department of Mechanical Engineering, University of Michigan, Michigan 48109, USA Department of Physics, University of Michigan, Michigan 48109, USA Department of Electrical Engineering and Computer Science, University of Michigan, Michigan 48109, USA
منابع مشابه
Fabrication and characterization of (Bi2Te3)0.2(Sb2Te3)0.8 compounds thin films by flash evaporated deposition
Bi2Te3)0.2(Sb2Te3)0.8 compounds thin films on glass substrates are fabricated by a flash evaporated deposition method. In order to enhance the performance of the thin films, annealing in an argon atmosphere is carried out for 1 hour in the temperature range from 200 to 400 C. The structure of the thin films, in terms of homogeneity and crystalline quality, is investigated by means of x-ray mapp...
متن کاملThermoelectric performance of films in the bismuth-tellurium and antimony-tellurium systems
Coevaporated bismuth-tellurium and antimony-tellurium films were fabricated under various deposition conditions scontrolled evaporation rates of individual species, substrate temperature, and substrate materiald, and their thermoelectric sTEd properties sSeebeck coefficient, electrical resistivity, and carrier concentrationd were measured in search of optimal TE performance. The tellurium atomi...
متن کاملMicro Thermoelectric Cooler Fabrication: Growth and Characterization of Patterned Sb2Te3 and Bi2Te3 Films
A column-type micro thermoelectric cooler is being fabricated using p-type Sb2Te3 and n-type Bi2Te3 films (approximately 4 μm thick). The films are grown by thermal co-evaporation and patterned on Cr/Au/Ti/Pt (hot) connectors, which are deposited onto a silicon dioxide coated wafer. The column height is limited by control of the Te deposition rate. Although a high substrate temperature during t...
متن کاملScreen printed flexible Bi2Te3-Sb2Te3 based thermoelectric generator
This paper reports the fabrication and testing of Bismuth Tellurium (Bi2Te3) – Antimony Tellurium (Sb2Te3) based thermocouples using screen printing technology. In this study, screen printable thermoelectric pastes were developed and the transport properties of cured material were measured. The dimension of each planer thermoleg is 39.3 mm × 3 mm with a thickness of 67 μm for Bi2Te3 leg and 62 ...
متن کاملThermoelectric Characteristics of n-Type Bi2Te3 and p-Type Sb2Te3 Thin Films Prepared by Co-Evaporation and Annealing for Thermopile Sensor Applications
A thermoelectric thin-film device consisting of n-type Bi2Te3 and p-type Sb2Te3 thin-film legs was prepared on a glass substrate by using co-evaporation and annealing process. The Seebeck coefficient and the power factor of the co-evaporated Bi2Te3 film were 130μV/K and 0.7 © 1014W/K2·m, respectively, and became substantially improved to 1160μV/K and 16 © 1014W/K2·m by annealing at 400°C for 20...
متن کامل