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Your search keyword '"Lynn, Kelvin G."' showing total 11 results
Start Over Author "Lynn, Kelvin G." Journal applied physics letters
11 results on '"Lynn, Kelvin G."'

4. Compensation and hydrogen passivation of magnesium acceptors in β-Ga2O3.

Author

Ritter, Jacob R., Huso, Jesse, Dickens, Peter T., Varley, Joel B., Lynn, Kelvin G., and McCluskey, Matthew D.

Subjects
MAGNESIUM, GALLIUM metallurgy, PASSIVATION, SURFACE preparation, SURFACE plasmons, PHOTOCONDUCTIVITY, PHOTOCHEMISTRY
Abstract

Magnesium-doped gallium oxide may be utilized as a semi-insulating material for future generations of power devices. Spectroscopy and hybrid functional calculations were used to investigate defect levels in Czochralski-grown β-Ga2O3. Substitutional Mg dopants act as deep acceptors, while substitutional Ir impurities are deep donors. Hydrogen-annealed Ga2O3:Mg shows an IR peak at 3492 cm−1, assigned to an O-H bond-stretching mode of a neutral MgH complex. Despite compensation by Ir and Si and hydrogen passivation, high concentrations of Mg (1019 cm−3) can push the Fermi level to mid-gap or lower. [ABSTRACT FROM AUTHOR]

Published
2018
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11. Compensation and hydrogen passivation of magnesium acceptors in β-Ga2O3.

Author

Ritter, Jacob R., Huso, Jesse, Dickens, Peter T., Varley, Joel B., Lynn, Kelvin G., and McCluskey, Matthew D.

Subjects
*MAGNESIUM, *GALLIUM metallurgy, *PASSIVATION, *SURFACE preparation, *SURFACE plasmons, *PHOTOCONDUCTIVITY, *PHOTOCHEMISTRY
Abstract

Magnesium-doped gallium oxide may be utilized as a semi-insulating material for future generations of power devices. Spectroscopy and hybrid functional calculations were used to investigate defect levels in Czochralski-grown β-Ga2O3. Substitutional Mg dopants act as deep acceptors, while substitutional Ir impurities are deep donors. Hydrogen-annealed Ga2O3:Mg shows an IR peak at 3492 cm−1, assigned to an O-H bond-stretching mode of a neutral MgH complex. Despite compensation by Ir and Si and hydrogen passivation, high concentrations of Mg (1019 cm−3) can push the Fermi level to mid-gap or lower. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

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