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Optical characterisation of Bi-doped GaN films grown by molecular beam epitaxy

✍ Scribed by Ibáñez, J. ;Pastor, D. ;Cuscó, R. ;Artús, L. ;Avella, M. ;Jiménez, J. ;Novikov, S. V. ;Foxon, C. T.


Book ID
105363196
Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
135 KB
Volume
202
Category
Article
ISSN
0031-8965

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✦ Synopsis


Abstract

We use cathodoluminescence and Raman spectroscopy to investigate GaN layers grown by plasma‐assisted molecular beam epitaxy with different Bi fluxes. We find that the growth of GaN with an additional Bi flux favours the formation of submicron cubic domains, which results in layers with reduced crystalline quality and lower luminescence emission. We detect a Bi‐related Raman feature at low frequencies that we tentatively assign to local Bi modes in GaN, which indicates that a fraction of Bi atoms incorporates into the GaN lattice. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)


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