RF-MBEを用いたファンデルワールスエピタキシーによるグラフェン構造への窒化インジウム結晶成長

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  • Van der Waals Epitaxy of Indium Nitride Crystals on Graphitic Structure by RF-MBE
  • RF-MBE オ モチイタ ファンデルワールスエピタキシー ニ ヨル グラフェン コウゾウ エ ノ チッカ インジウム ケッショウ セイチョウ

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<p>We have studied van der Waals epitaxy of indium nitride (InN) on graphitic substrates using radio frequency plasma assisted molecular beam epitaxy (RF-MBE) and droplet elimination by radical ion beam (DERI) method. InN nanocrystals smaller than ~ 100 nm were densely grown on the single layer graphene supported on SiO2/Si while larger hexagonal shape nanocrystals larger than 500 nm were obtained on the thick graphite. Our result suggested that both defects on the graphitic substrate and flatness plays important role to limit the crystal size, such that these parameters act on the In droplet coverage at initial growth stage. With inserting aluminum nitride (AlN) buffer layer, the coalescent of these crystals can be improved and highly oriented wurtzite structure becomes dominant. These findings give the new insights for the improvement of the crystal growth of InN thin film. </p>

収録刊行物

  • 材料

    材料 69 (10), 701-706, 2020-10-15

    公益社団法人 日本材料学会

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