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Intrinsic Absorption-Edge Spectrum and Indirect Exciton Related Luminescence of Cubic Boron NitrideThe indirest band gap nature of cubic Boron Nitride by means of absorption and cathodoluminescence spectroscopy is described. Samples were prepared by the temperature gradient method under high pressure and hig temperature conditions. A barium-BN catalyst was utilized. Samples showed a series of bands which is readily assigned to the indirect bound and free exciton luminescence assisted by zone-boundary phonons of point X. In addition, the absorption bands to represent the indirect exciton and band absorption nature is also observed being the indirect exciton energy being the respective phonon energies apart.
Document ID
20030068558
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Kenji Watanabe (National Institute for Materials Science Tsukuba, Japan)
Takashi Taniguchi (National Institute for Materials Science Tsukuba, Japan)
Isao Sakaguchi (National Institute for Materials Science Tsukuba, Japan)
Hisao Kanda (National Institute for Materials Science Tsukuba, Japan)
Date Acquired
August 21, 2013
Publication Date
August 1, 2003
Publication Information
Publication: Proceedings of the Seventh Applied Diamond Conference/Third Frontier Carbon Technology Joint Conference
Publisher: National Aeronautics and Space Administration
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA/CP-2003-212319
Meeting Information
Meeting: 3rd Frontier Carbon Technology (FCT) Joint Conference
Location: Tsukuba
Country: JP
Start Date: August 18, 2003
End Date: August 21, 2003
Sponsors: Nippon Institute of Technology, National Institute of Advanced Industrial Science and Technology, Glenn Research Center
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
cathodoluminescence
absorption
indirect band gap
indirect exciton
cubic boron nitride (cBN)
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IDRelationTitle20030068525Collected WorksProceedings of the Seventh Applied Diamond Conference/Third Frontier Carbon Technology Joint Conference (ADC/FCT 2003)
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