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Title: Giant thermopower and figure of merit of semiconducting polaronic nanolayers
Authors: Alexandrov, A.S.
Bratkovsky, A.M.
Issue Date: 2010
Publisher: © American Physical Society
Citation: ALEXANDROV, A.S. and BRATKOVSKY, A.M., 2010. Giant thermopower and figure of merit of semiconducting polaronic nanolayers. Physical Review B, 81, 153204, 4 pp.
Abstract: Polarons—electrons coupled with lattice vibrations—play a key role in transport and optical properties of many semiconductors. Here, we calculate the energy spectrum and thermopower of Fröhlich polarons confined to a potential well as a function of the well thickness. We show that the polaron mass enhancement in 2+ϵ dimensions explains a giant thermoelectric power recently observed in doped semiconducting nanolayers (multiple quantum wells) and propose a route for enhancing the performance of thermoelectric energy nanoconverters by increasing their figure of merit by more than one order of magnitude.
Version: Published
DOI: 10.1103/PhysRevB.81.153204
URI: https://dspace.lboro.ac.uk/2134/6588
Publisher Link: http://link.aps.org/doi/10.1103/PhysRevB.81.153204
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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