Abstract
In this paper, we present three different examples of nanocrystals prepared by the pulsed laser vaporization–controlled condensation (LVCC) technique. First, we present some new results on the photoluminescence (PL) properties of the Si nanocrystals. One of the main goals of this work is to compare the results of the PL from the solid surface-oxidized particles with those from the incorporated particles in polymer films. We also present evidence for a novel photoreduction of the white WO 3 nanoparticles into the blue W 2O 5 following the irradiation of the particles with the second harmonic of the Nd:YAG laser at 532 nm. Finally, we report the observation of efficient blue PL from Ga oxide nanoparticles. These examples demonstrate the potential use of nanoparticles in the design of optical and photonic devices.
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