Studies of deep level centers determining the diffusion length in epitaxial layers and crystals of undoped n-GaN

In Hwan Lee; A. Y. Polyakov; N. B. Smirnov; E. B. Yakimov; S. A. Tarelkin; A. V. Turutin; I. V. Shemerov; S. J. Pearton

doi:10.1063/1.4952734

Studies of deep level centers determining the diffusion length in epitaxial layers and crystals of undoped n-GaN

In Hwan Lee, A. Y. Polyakov, N. B. Smirnov, E. B. Yakimov, S. A. Tarelkin, A. V. Turutin, I. V. Shemerov, S. J. Pearton

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

A wide variety of parameters were measured for undoped n-GaN grown by hydride vapor phase epitaxy and compared to n-GaN films grown by conventional and lateral overgrowth metalorganic chemical vapor deposition. The parameters included deep level electron and hole trap spectra, microcathodoluminescence, electron beam induced current, diffusion length, and electron capture cross section from the dependence of the low temperature persistent photocapacitance on forward bias injection pulse duration. The results show a prominent role of electron traps with levels near E_c-0.56 eV in limiting the lifetime and diffusion length values in all these materials.

Original language	English
Article number	205109
Journal	Journal of Applied Physics
Volume	119
Issue number	20
DOIs	https://doi.org/10.1063/1.4952734
Publication status	Published - 2016 May 28
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.4952734

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Studies of deep level centers determining the diffusion length in epitaxial layers and crystals of undoped n-GaN. / Lee, In Hwan; Polyakov, A. Y.; Smirnov, N. B.; Yakimov, E. B.; Tarelkin, S. A.; Turutin, A. V.; Shemerov, I. V.; Pearton, S. J.

In: Journal of Applied Physics, Vol. 119, No. 20, 205109, 28.05.2016.

Research output: Contribution to journal › Article › peer-review

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title = "Studies of deep level centers determining the diffusion length in epitaxial layers and crystals of undoped n-GaN",

abstract = "A wide variety of parameters were measured for undoped n-GaN grown by hydride vapor phase epitaxy and compared to n-GaN films grown by conventional and lateral overgrowth metalorganic chemical vapor deposition. The parameters included deep level electron and hole trap spectra, microcathodoluminescence, electron beam induced current, diffusion length, and electron capture cross section from the dependence of the low temperature persistent photocapacitance on forward bias injection pulse duration. The results show a prominent role of electron traps with levels near Ec-0.56 eV in limiting the lifetime and diffusion length values in all these materials.",

author = "Lee, {In Hwan} and Polyakov, {A. Y.} and Smirnov, {N. B.} and Yakimov, {E. B.} and Tarelkin, {S. A.} and Turutin, {A. V.} and Shemerov, {I. V.} and Pearton, {S. J.}",

note = "Funding Information: The work at NUST MISiS was supported, in part, by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST MISiS (K2-2014-055). The work at Chonbuk National University was supported by National Research Foundation of Korea (NRF) funded by Ministry of Science, ICT, and Future Planning (2015042417). The work at UF was supported by DTRA. Publisher Copyright: {\textcopyright} 2016 Author(s).",

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doi = "10.1063/1.4952734",

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AU - Lee, In Hwan

AU - Polyakov, A. Y.

AU - Smirnov, N. B.

AU - Yakimov, E. B.

AU - Tarelkin, S. A.

AU - Turutin, A. V.

AU - Shemerov, I. V.

AU - Pearton, S. J.

N1 - Funding Information: The work at NUST MISiS was supported, in part, by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST MISiS (K2-2014-055). The work at Chonbuk National University was supported by National Research Foundation of Korea (NRF) funded by Ministry of Science, ICT, and Future Planning (2015042417). The work at UF was supported by DTRA. Publisher Copyright: © 2016 Author(s).

PY - 2016/5/28

Y1 - 2016/5/28

N2 - A wide variety of parameters were measured for undoped n-GaN grown by hydride vapor phase epitaxy and compared to n-GaN films grown by conventional and lateral overgrowth metalorganic chemical vapor deposition. The parameters included deep level electron and hole trap spectra, microcathodoluminescence, electron beam induced current, diffusion length, and electron capture cross section from the dependence of the low temperature persistent photocapacitance on forward bias injection pulse duration. The results show a prominent role of electron traps with levels near Ec-0.56 eV in limiting the lifetime and diffusion length values in all these materials.

AB - A wide variety of parameters were measured for undoped n-GaN grown by hydride vapor phase epitaxy and compared to n-GaN films grown by conventional and lateral overgrowth metalorganic chemical vapor deposition. The parameters included deep level electron and hole trap spectra, microcathodoluminescence, electron beam induced current, diffusion length, and electron capture cross section from the dependence of the low temperature persistent photocapacitance on forward bias injection pulse duration. The results show a prominent role of electron traps with levels near Ec-0.56 eV in limiting the lifetime and diffusion length values in all these materials.

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SN - 0021-8979

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M1 - 205109

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Studies of deep level centers determining the diffusion length in epitaxial layers and crystals of undoped n-GaN

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