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Proceedings Paper

Hot phonons in InAlN/AlN/GaN heterostructure 2DEG channels
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Paper Abstract

Non-equilibrium (hot) occupancy of longitudinal-optical (LO) phonon modes is considered for InAlN/AlN/GaN and related structures with two-dimensional electron gas (2DEG) channels located in GaN and subjected to high electric fields. The channel operation is found to depend critically on the LO-mode occupancy controlled by hot-phonon lifetime. The lifetime dependences on the occupancy and the 2DEG density are presented and discussed in terms of plasmon-assisted decay of hot-phonons. The optimal 2DEG density for the fastest removal of the LO-mode heat is estimated.

Paper Details

Date Published: 18 February 2009
PDF: 14 pages
Proc. SPIE 7216, Gallium Nitride Materials and Devices IV, 721608 (18 February 2009); doi: 10.1117/12.802341
Show Author Affiliations
Arvydas Matulionis, Semiconductor Physics Institute (Lithuania)
Hadis Morkoç, Virginia Commonwealth Univ. (United States)

Published in SPIE Proceedings Vol. 7216:
Gallium Nitride Materials and Devices IV
Hadis Morkoç; Cole W. Litton; Jen-Inn Chyi; Yasushi Nanishi; Joachim Piprek; Euijoon Yoon, Editor(s)

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