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The Properties of GaN Grown by BVPE Method on the Si(111) Substrate with Pre-deposited Al Layer  

Shin Dae Hyun (Department of Semiconductor Physics, Korea Maritime University)
Baek Shin Young (Department of Semiconductor Physics, Korea Maritime University)
Lee Chang Min (Department of Semiconductor Physics, Korea Maritime University)
Yi Sam Nyung (Department of Semiconductor Physics, Korea Maritime University)
Kang Nam Lyong (Faculty of Liberal Arts, Miryang National University)
Park Seoung Hwan (Department of Photonics and Information Engineering, Catholic University)
Publication Information
Journal of the Korean Vacuum Society / v.14, no.4, 2005 , pp. 201-206 More about this Journal
Abstract
In this work, we tried to improve the fabrication process in HVPE (Hydride Vapor Phase Epitaxy) system by using Si(111) substrate with pre-deposited Al layer. PL measurements was done for samples with and without pre-deposited Al on Si and it was also examined the dependence of the optical characteristic properties on AlN buffer thickness for GaN/AIN/Al/Si. A sample with thin Al nucleation layer on Si substrate reveals a better optical property than the other. And it suggests that the thickness for AlN buffer layer with thin Al nucleation layer on Si(111) substrate is most proper about $260{\AA}$ to grow GaN in HVPE system. The surface morphology of GaN clearly shows the hexagonal crystallization. The XRD pattern showed strong peak at GaN{0001} direction.
Keywords
AlN; GaN; HVPE; PL;
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