Optical Studies of Heat Transfer in PbTe:Bi(Sb) Thin Films
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Electrical and thermal properties of lead-telluride films from 0.3 to 2.4 μm in thickness doped with antimony and bismuth, which were synthesized by thermal evaporation in vacuum, are investigated. Contact-free measurement of the in-plane thermal diffusivity is performed by the excitation of surface transient gratings and it is shown that the developed doping technology leads to a noticeable decrease in this heat-transfer parameter when compared with undoped PbTe.
This study was supported by the Belarusian Republican Foundation for Fundamental Research, projects nos. F13K-063 and F16K-054, and by the State Fund for Fundamental Research of Ukraine, project no. F73/38-2017.
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