Blueshift in Mgx Zn1-xO alloys: Nature of bandgap bowing

Almamun Ashrafi; Yusaburo Segawa

doi:10.1063/1.3050338

Blueshift in Mg_x Zn_1-xO alloys: Nature of bandgap bowing

Almamun Ashrafi^*, Yusaburo Segawa

^*Corresponding author for this work

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

34 Citations (Scopus)

Abstract

A Mg composition-dependent blueshift has been studied in Mg_x Zn_1-xO alloys deposited on 6H-SiC (0001) substrates. The localized exciton energy in Mg_x Zn_1-xO alloys for x∼0.3 was blueshifted in the range 212-248 meV. The large negative bowing parameter was estimated in Mg_x Zn_1-xO alloys to be 4.72±0.84 eV. This large bandgap bowing emphasizes the Stokes shift, which has been attributed to the existence of spontaneous polarization effects due to the polar growth of Mg_x Zn_1-xO /SiC heterostructure and local compositional inhomogeneity.

Original language	English
Article number	123528
Journal	Journal of Applied Physics
Volume	104
Issue number	12
DOIs	https://doi.org/10.1063/1.3050338
Publication status	Published - 2008

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abstract = "A Mg composition-dependent blueshift has been studied in Mgx Zn1-xO alloys deposited on 6H-SiC (0001) substrates. The localized exciton energy in Mgx Zn1-xO alloys for x∼0.3 was blueshifted in the range 212-248 meV. The large negative bowing parameter was estimated in Mgx Zn1-xO alloys to be 4.72±0.84 eV. This large bandgap bowing emphasizes the Stokes shift, which has been attributed to the existence of spontaneous polarization effects due to the polar growth of Mgx Zn1-xO /SiC heterostructure and local compositional inhomogeneity.",

author = "Almamun Ashrafi and Yusaburo Segawa",

year = "2008",

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volume = "104",

journal = "Journal of Applied Physics",

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T2 - Nature of bandgap bowing

AU - Ashrafi, Almamun

AU - Segawa, Yusaburo

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N2 - A Mg composition-dependent blueshift has been studied in Mgx Zn1-xO alloys deposited on 6H-SiC (0001) substrates. The localized exciton energy in Mgx Zn1-xO alloys for x∼0.3 was blueshifted in the range 212-248 meV. The large negative bowing parameter was estimated in Mgx Zn1-xO alloys to be 4.72±0.84 eV. This large bandgap bowing emphasizes the Stokes shift, which has been attributed to the existence of spontaneous polarization effects due to the polar growth of Mgx Zn1-xO /SiC heterostructure and local compositional inhomogeneity.

AB - A Mg composition-dependent blueshift has been studied in Mgx Zn1-xO alloys deposited on 6H-SiC (0001) substrates. The localized exciton energy in Mgx Zn1-xO alloys for x∼0.3 was blueshifted in the range 212-248 meV. The large negative bowing parameter was estimated in Mgx Zn1-xO alloys to be 4.72±0.84 eV. This large bandgap bowing emphasizes the Stokes shift, which has been attributed to the existence of spontaneous polarization effects due to the polar growth of Mgx Zn1-xO /SiC heterostructure and local compositional inhomogeneity.

UR - https://www.scopus.com/pages/publications/58149230963

U2 - 10.1063/1.3050338

DO - 10.1063/1.3050338

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VL - 104

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 12

M1 - 123528

ER -

Blueshift in Mg_x Zn_1-xO alloys: Nature of bandgap bowing

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