GaN nanocolumns on sapphire by ammonia-M
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S. Vézian; B. Alloing; J. Zúñiga-Pérez
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Article
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2011
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Elsevier Science
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English
⚖ 717 KB
Catalyst-free GaN nanocolumns have been grown by ammonia-assisted molecular-beam epitaxy on (0 0 0 1) sapphire substrates. Two types of samples have been studied: self-organized nanocolumns grown directly onto the substrate and site-controlled nanocolumns grown through an array of apertures in a SiN