Fine structure on the green band in ZnO
Top Cited Papers
- 1 June 2001
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 89 (11), 6189-6191
- https://doi.org/10.1063/1.1356432
Abstract
An emission band at 2.4 eV, called the green band, is observed in most ZnO samples, no matter what growth technique is used. Sometimes this band includes fine structure, which consists mainly of doublets, repeated with a longitudinal-optical-phonon-energy spacing (72 meV). We have developed a vibronic model for the green band, based on transitions from two separate shallow donors to a deep acceptor. The donors, at energies 30 and 60 meV from the conduction-band edge, respectively, are also found from Hall-effect measurements.Keywords
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