期刊
APPLIED PHYSICS LETTERS
卷 96, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3428577
关键词
annealing; electrical conductivity; IV-VI semiconductors; lead compounds; Seebeck effect; semiconductor superlattices; semiconductor thin films; thermal conductivity; tungsten compounds
资金
- Office of Naval Research [N00014-08-1-1168, N0014-07-1-0358]
The in-plane thermal conductivity is measured to be three times lower in misfit-layered [(PbSe)(0.99)](x)(WSe2)(x) superlattice thin films than disordered-layered WSe2 because of interface scattering despite a higher cross-plane value in the former than the latter. While having little effect on the in-plane thermal conductivity, annealing the p-type [(PbSe)(0.99)](2)(WSe2)(2) films in Se increases the in-plane Seebeck coefficient and electrical conductivity because of decreased defect and hole concentrations. Increasing interface density of the annealed films by decreasing x from 4 to 2 has weak influence on the in-plane thermal conductivity but increases the Seebeck coefficient and decreases the room-temperature electrical conductivity. (C)2010 American Institute of Physics. [doi:10.1063/1.3428577]
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