Blue emission from InGaN/GaN hexagonal pyramid structures |
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Authors: | Hideto Miyake Keisuke Nakao Kazumasa Hiramatsu |
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Institution: | aDepartment of Electrical and Electronic Engineering, Mie University, 1577 Kurima-machiya, Tsu, Mie 514-8507, Japan |
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Abstract: | Cathodoluminescence (CL) from InGaN grown on GaN hexagonal pyramid structures has been investigated. The facet structure can be controlled by the growth temperature and reactor pressure. GaN pyramid structures surrounded with facets were grown at 1020 C at a pressure of 500 Torr by low-pressure metalorganic vapor phase epitaxy (LP-MOVPE). The indium mole fraction in the InGaN film depends on the facet structure. The thickness of the InGaN and the peak wavelength and intensity of the CL from the InGaN gradually increased from the bottom to the top of the facets. |
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Keywords: | InGaN Selective-area growth Cathodoluminescence Facet Pyramid structure Fluorescent material |
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