Coaxial heterostructure formation of highly crystalline graphene flakes on boron nitride nanotubes by high-temperature chemical vapor deposition

Author:

Kato Masakiyo,Inoue TaikiORCID,Chiew Yi LingORCID,Chou Yungkai,Nakatake MasashiORCID,Takakura ShoichiORCID,Watanabe Yoshio,Suenaga KazuORCID,Kobayashi YoshihiroORCID

Abstract

Abstract We develop a high-temperature chemical vapor deposition of highly crystalline graphene on the surface of boron nitride nanotubes (BNNTs). The growth of few-layer graphene flakes on BNNT templates was confirmed by scanning transmission electron microscopy. Based on an investigation of the effect of growth temperature and growth time on defect density, graphene with relatively high crystallinity was obtained at 1350 °C. The absence of undesirable alterations in the BNNT lattice during graphene growth was verified by multiple analyses. The high-temperature growth of heterolayers would assist in the advancement of nanodevices that coaxially combine graphene and boron nitride.

Funder

Japan Society for the Promotion of Science

Mizuho Foundation for the Promotion of Sciences

Murata Science Foundation

Core Research for Evolutional Science and Technology

Publisher

IOP Publishing

Subject

General Physics and Astronomy,General Engineering

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