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Optical properties of ZnO and Al2O3 implanted with silver ions
Authors
Bazarov V.
Faizrakhmanov I.
+4 more
Gumarov A.
Lyadov N.
Nuzhdin V.
Valeev V.
Publication date
1 January 2014
Publisher
Abstract
ZnO and Al2O3 samples implanted with 30-keV silver ions with fluences in the interval (0.25-1.00) × 1017 ions/cm2 are studied by the method of optical photometry in the visible part of the spectrum. The optical transmission spectra of the implanted samples exhibit a selective band associated with surface plasmon resonance absorption of silver nanoparticles. The intensity of this band nonmonotonically depends on the implantation fluence. The silver ion depth distribution in the samples is calculated. It is shown that the non-monotonicity observed in experiments is due to an increase in the substrate sputtering ratio with increasing implantation fluence. It is found that vacuum thermal annealing of the implanted Al2O3 layers up to 700°C causes a considerable narrowing of the plasmon absorption bandwidth without a tangible change in its intensity. At higher annealing temperatures, the plasmon absorption band broadens and its intensity drops. Annealing of the ZnO films under such conditions causes their complete vaporization. © 2014 Pleiades Publishing, Ltd
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Last time updated on 07/05/2019