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Liquid state manipulation (LSM) has been applied to prepare direction solidified BiTeSe bulk alloys. The maintained strong texturing and increased effective mass benefits the power factor. Moreover, the lattice thermal… Click to show full abstract
Liquid state manipulation (LSM) has been applied to prepare direction solidified BiTeSe bulk alloys. The maintained strong texturing and increased effective mass benefits the power factor. Moreover, the lattice thermal conductivity in BiTeSe reduces to 0.55 Wm K at 490 K after LSM. As a result, the largest ZT value of 1.10 is achieved for the sample experienced LSM, which is increased by 20% compared with that unexperienced LSM. The average ZT value for LSM sample rises from 0.80 to 1.02, which makes this material suitable for application in the wide temperature range.
Journal Title: Scripta Materialia
Year Published: 2018
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