Journal
APPLIED PHYSICS LETTERS
Volume 81, Issue 24, Pages 4547-4549Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1527987
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Highly crystalline 5H-polytypic form of sp(3)-bonded boron nitride (BN) was grown by pulsed-laser-vaporization of BN, where synchronous reactive-plasma packets assisted the crystal growth in the vapor phase. The structure of the product crystallites (similar to5 mum) was confirmed by using transmission electron diffraction and electron energy loss spectroscopy. This material proved to have a sharp and dominant band at 225 nm by cathodoluminescence at room temperatures and corresponding monochromatic images revealed that they uniformly emitted the ultraviolet light. Considering that cubic BN has already been doped as p- and n-type semiconductors, this material may be applied to the light-emitting devices working at almost the deepest limit of the UV region that is functional without vacuum. (C) 2002 American Institute of Physics.
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