Research on Optical Properties of Ga1-xAlxN with Different Al Component

Ming Zhu Yang; Jing Guo; Mei Shan Wang

doi:10.4028/www.scientific.net/AMM.423-426.258

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 423-426Research on Optical Properties of Ga1-xAlxN with...

Research on Optical Properties of Ga_1-xAl_xN with Different Al Component

Abstract:

As advanced semiconductor materials, Ga_1-xAl_xN alloys are widely used. In order to research the optical properties of Ga_1-xAl_xN with different Al component, we built models of GaN, Ga_0.875Al_0.125N, Ga_0.750Al_0.250N, Ga_0.625Al_0.375N, and AlN, and calculated the optical properties of the five crystals based on first principle calculations. Results show that the static dielectric constant decreases when the Al component increases, and the absorption peak shifts to higher energy. The threshold wavelength of Ga_1-xAl_xN is lower and lower when the Al component increases, and the Ga_1-xAl_xN material owns “solar blind” property when the Al component is higher than 0.25.

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Periodical:

Applied Mechanics and Materials (Volumes 423-426)

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258-262

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.423-426.258

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Online since:

September 2013

Authors:

Ming Zhu Yang, Jing Guo, Mei Shan Wang

Keywords:

Different Al Component, Ga_1-xAl_xNsemiconductor, Optical Property, Threshold Wavelength

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