Title :
Application of electron beam evaporation method for making coatings on the elements of thermoelectric materials based on Bi2Te 3
Author :
Belov, I.M. ; Manyakin, S.M. ; Volkov, M.P.
Author_Institution :
Crystal Co. Ltd., Moscow, Russia
Abstract :
Application of thermoelectric materials in devices requires creation of commutational and antidiffusion coatings. Multilayer coatings on the surface of thermoelectric elements of Bi2(Te 1-xSex)3 and (Bi0.25Sb0.75)2(Te1-ySe y)3 were made by electron beam evaporation of Mo, Ni and Bi-Sn alloys in vacuum. Dependence of surface morphology upon surface of substance and summary thickness of coatings within the range of 0.5-10 μm was investigated. It was shown that solders with melting point up to 200°C based on Bi-Sn alloys can be applied for commutation of thermoelectric elements in devices. Influence of quality of coatings upon thermoelectric figure of merit of devices has been found
Keywords :
bismuth compounds; electron beam deposition; semiconductor growth; semiconductor materials; semiconductor thin films; tellurium compounds; (Bi0.25Sb0.75)2(Te1-y Sey)3; (Bi0.25Sb0.75)2(TeSe)3 ; 0.5 to 10 mum; 200 C; Bi2(Te1-xSex)3; Bi2(TeSe)3; Bi2Te3; coatings; electron beam evaporation method; solders; surface morphology; thermoelectric figure of merit; thermoelectric materials; thickness; Bismuth; Coatings; Electron beams; Nickel alloys; Nonhomogeneous media; Surface morphology; Tellurium; Thermoelectric devices; Thermoelectricity; Tin alloys;
Conference_Titel :
Thermoelectrics, 1998. Proceedings ICT 98. XVII International Conference on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-4907-5
DOI :
10.1109/ICT.1998.740338
