Unexpectedly low thermal conductivity in natural nanostructured bulk Ga(2)Te(3)

作者：Kurosaki Ken^*; Matsumoto Hideaki; Charoenphakdee Anek; Yamanaka Shinsuke; Ishimaru Manabu; Hirotsu Yoshihiko

来源：Applied Physics Letters, 2008, 93(1): 012101.

DOI：10.1063/1.2940591

Here we introduce a promising thermoelectric material: Ga(2)Te(3) with unexpectedly low thermal conductivity, in which certain kinds of superlattice structures naturally form. Two-dimensional vacancy planes with approximately 3.5 nm intervals exist in Ga(2)Te(3), scattering phonons efficiently and leading to a very low thermal conductivity, comparable to its calculated minimum. Ga(2)Te(3) and related materials hold great promise in the field of thermoelectrics.

• 出版日期2008-7-7