Giant thermopower and figure of merit of semiconducting polaronic nanolayers.pdf (415.26 kB)
Giant thermopower and figure of merit of semiconducting polaronic nanolayers
journal contribution
posted on 2010-08-24, 11:49 authored by A.S. Alexandrov, A.M. BratkovskyPolarons—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.
History
School
- Science
Department
- Physics
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.Publisher
© American Physical SocietyVersion
- VoR (Version of Record)
Publication date
2010ISSN
1098-0121Publisher version
Language
- en