Thermal conductivity of Bi2(SexTe1−x)3 alloy films grown by molecular beam epitaxy
Year: 2017
Type: article
Abstract: We studied the thermal conductivity of Bi2Se3, Bi2Te3, and their alloy Bi2(SexTe1−x)3 at room temperature using time-domain thermoreflectance measurements. The Bi2(SexTe1−x)3 films with various concentrations of Se and Te prepared by molecular beam epitaxy on GaAs substrates were investigated to study the dependence of thermal conductivity on film composition. We observed that the Bi2(SexTe1−x)3 ternary alloys can have much lower thermal conductivity values compared to those of Bi2Se3 and Bi2Te3. These results may provide useful information for developing and engineering low thermal conductivity materials for thermoelectric applications.
Source: APL Materials
DOI: 10.1063/1.4984974
Institution: University of Notre Dame
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,200
OpenAlex ID: W2624562612