Effect of phonon confinement on the thermoelectric figure of merit of quantum wells

Alexander Balandin, Kang L. Wang

研究成果: Article同行評審

218 引文 斯高帕斯(Scopus)

摘要

Recently, it has been shown that the thermoelectric figure of merit is strongly enhanced in quantum wells and superlattices due to two-dimensional carrier confinement. We predict that the figure of merit can increase even further in quantum well structures with free-surface or rigid boundaries. This additional increase is due to spatial confinement of acoustic phonons and corresponding modification of their group velocities. The latter leads to an increase of the phonon relaxation rates and thus, a significant drop in the lattice thermal conductivity.

原文English
頁(從 - 到)6149-6153
頁數5
期刊Journal of Applied Physics
84
發行號11
DOIs
出版狀態Published - 1998 12月 1

All Science Journal Classification (ASJC) codes

  • 一般物理與天文學

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