Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/929
Title: The optical absorption and photoconductivity spectra of hexagonal boron nitride single crystals
Authors: REMES, Zdenek 
NESLADEK, Milos 
HAENEN, Ken 
Watanabe, K.
Taniguchi, T.
Issue Date: 2005
Publisher: Wiley - VCH Verlag
Source: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 202(11). p. 2229-2233
Abstract: Recently, a strong cathodoluminescence at 215 nm (photon energy 5.765 eV) has been reported on pure HPHT hexagonal boron nitride (hBN) single crystals (K. Watanabe et al., Nature Mater. 3, 404 (2004)). For the first time, we measured the photocurrent and optical absorption spectra of these new hBN crystals in a broad spectral range 1–6.6 eV. Our measurements support the previously published results, especially that the single crystal hBN has a direct band gap about 5.95 eV, and a rather strong exciton binding energy that allows excitons to exist even at room temperature. We found three new opto-electronic transitions at 2.7, 3.6 and 5.4 eV and observed the oscillatory photoconductivity in 2.7–3.6 eV region.
Keywords: Wide Band Gap Materials
Document URI: http://hdl.handle.net/1942/929
ISSN: 0031-8965
DOI: 10.1002/pssa.200561902
ISI #: 000231925500034
Category: A1
Type: Journal Contribution
Validations: ecoom 2006
Appears in Collections:Research publications

Show full item record

SCOPUSTM   
Citations

34
checked on Sep 2, 2020

WEB OF SCIENCETM
Citations

38
checked on May 22, 2022

Page view(s)

58
checked on May 26, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.