Formation of aluminum nitride films on GaAs(110) at room temperature by reactive molecular-beam epitaxy: X-ray and soft x-ray photoemission spectroscopy
- 15 July 1990
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 68 (2) , 586-590
- https://doi.org/10.1063/1.346811
Abstract
AlxN1−x films were prepared on GaAs(110) surfaces at room temperature by simultaneous evaporation of aluminum and exposure to a beam of ammonia molecules (reactive molecular-beam epitaxy). The formation of aluminum nitride was followed by using photoemission spectroscopy excited with ZrMζ radiation (hν=151.2 eV). The composition of the deposited films was monitored by recording the N(1s) and Al(2p) core lines excited with MgKα radiation (hν=1253.6 eV). The intensity ratio of these core levels as a function of impinging rate ratio z=ν(NH3)/ν(Al) was compared with the intensity ratio determined with an AlN standard under the same experimental conditions. Aluminum nitride was found to form at room temperature for z values larger than some 104.This publication has 16 references indexed in Scilit:
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