Journal
NANOTECHNOLOGY
Volume 23, Issue 41, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/23/41/415605
Keywords
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Funding
- National Natural Science Foundation of China [51172122]
- Foundation for the Author of a National Excellent Doctoral Dissertation [2007B37]
- Tsinghua University Initiative Scientific Research Program [20111080939]
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We demonstrate an improved low-pressure chemical vapor deposition method to fabricate hexagonal boron nitride (h-BN) domains of a few layers (one-four layers) from ammonia borane by adding a small quartz tube to stabilize the gas flow over the copper substrate and reducing the growing rate of h-BN. The h-BN grows freely and spontaneously to form triangular domains on the Cu (100) plane. The triangular domains are prone to be parallel to each other on the copper substrate. The h-BN domains grow by extending in the normal direction of the triangle and form a large thin film by joining together. Both the size and coverage rate on Cu foils are well controlled by tuning the amount of ammonia borane.
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