Density-dependent energy relaxation of hot electrons in InN epilayers

M. D. Yang; Y. W. Liu; J. L. Shen; C. W. Chen; G. C. Chi; T. Y. Lin; Wu-Ching Chou; M. H. Lo; Hao-Chung Kuo; Tien-chang Lu

doi:10.1063/1.3056383

Density-dependent energy relaxation of hot electrons in InN epilayers

M. D. Yang, Y. W. Liu, J. L. Shen, C. W. Chen, G. C. Chi, T. Y. Lin, Wu-Ching Chou, M. H. Lo, Hao-Chung Kuo, Tien-chang Lu

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9 Scopus citations

Abstract

This work investigates the dependence of the hot-electron energy relaxation in InN epilayers on electron density. From the high-energy tail of photoluminescence, the electron temperature of the hot electrons was determined. Acoustic phonons have an important role in the energy relaxation of the hot electrons. The density-dependent electron energy loss rate in InN can be explained by a combination of longitudinal optical and acoustic phonon emissions. A slowing of energy loss rate at high electron densities was observed and attributed to piezoelectric coupling to acoustic phonons.

Original language	English
Article number	013526
Journal	Journal of Applied Physics
Volume	105
Issue number	1
DOIs	https://doi.org/10.1063/1.3056383
State	Published - 9 Jul 2009

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Yang, M. D., Liu, Y. W., Shen, J. L., Chen, C. W., Chi, G. C., Lin, T. Y., Chou, W-C., Lo, M. H., Kuo, H-C., & Lu, T. (2009). Density-dependent energy relaxation of hot electrons in InN epilayers. Journal of Applied Physics, 105(1), [013526]. https://doi.org/10.1063/1.3056383

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abstract = "This work investigates the dependence of the hot-electron energy relaxation in InN epilayers on electron density. From the high-energy tail of photoluminescence, the electron temperature of the hot electrons was determined. Acoustic phonons have an important role in the energy relaxation of the hot electrons. The density-dependent electron energy loss rate in InN can be explained by a combination of longitudinal optical and acoustic phonon emissions. A slowing of energy loss rate at high electron densities was observed and attributed to piezoelectric coupling to acoustic phonons.",

author = "Yang, {M. D.} and Liu, {Y. W.} and Shen, {J. L.} and Chen, {C. W.} and Chi, {G. C.} and Lin, {T. Y.} and Wu-Ching Chou and Lo, {M. H.} and Hao-Chung Kuo and Tien-chang Lu",

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AU - Yang, M. D.

AU - Liu, Y. W.

AU - Shen, J. L.

AU - Chen, C. W.

AU - Chi, G. C.

AU - Lin, T. Y.

AU - Chou, Wu-Ching

AU - Lo, M. H.

AU - Kuo, Hao-Chung

AU - Lu, Tien-chang

PY - 2009/7/9

Y1 - 2009/7/9

N2 - This work investigates the dependence of the hot-electron energy relaxation in InN epilayers on electron density. From the high-energy tail of photoluminescence, the electron temperature of the hot electrons was determined. Acoustic phonons have an important role in the energy relaxation of the hot electrons. The density-dependent electron energy loss rate in InN can be explained by a combination of longitudinal optical and acoustic phonon emissions. A slowing of energy loss rate at high electron densities was observed and attributed to piezoelectric coupling to acoustic phonons.

AB - This work investigates the dependence of the hot-electron energy relaxation in InN epilayers on electron density. From the high-energy tail of photoluminescence, the electron temperature of the hot electrons was determined. Acoustic phonons have an important role in the energy relaxation of the hot electrons. The density-dependent electron energy loss rate in InN can be explained by a combination of longitudinal optical and acoustic phonon emissions. A slowing of energy loss rate at high electron densities was observed and attributed to piezoelectric coupling to acoustic phonons.

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