High-temperature characteristics of Seebeck coefficients for AlInN alloys grown by metalorganic vapor phase epitaxy

Jing Zhang, Songul Kutlu, Guangyu Liu, Nelson Tansu

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Abstract

The Seebeck coeeficients of AlInN alloys, grown by metalorganic vapor phase epitaxy, with In-contents (x) from 0.38 up to 21.34, were characterized and analyzed from room temperature (T 300 K) up to high temperature (T = 382 K). The Seebeck coefficients of the n-type AlInN alloys show significant enhancement at higher temperature up to 382 K, in comparison to those measured at room temperature. Large Seebeck coefficients (602.0- 1233.2 μ V/K) were obtained for the lattice-matched Al0.83In0.17N alloy (n = 5.1 × 1018 cm-3) from T = 300 K up to T 382 K. The improvement of Seebeck coefficients for the n-type AlInN alloys will lead to ∼1.5-4 times improvement of the thermopower at higher temperatures.

Original languageEnglish
Article number043710
JournalJournal of Applied Physics
Volume110
Issue number4
DOIs
Publication statusPublished - 15 Aug 2011
Externally publishedYes

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