Authors: Y Dai J Qiu X Hu L Yang X Jiang C Zhu B Yu
Publish Date: 2006/05/20
Volume: 84, Issue: 3, Pages: 501-505
Abstract
We investigated the effect of cerium oxide on the precipitation of Ag nanoparticles in silicate glass via a femtosecond laser irradiation and successive annealing Absorption spectra show that Ce3+ ions may absorb part of the laser energy via multiphoton absorption and release free electrons resulting in an increase of the concentration of Ag atoms and a decrease of the concentration of holetrapped color centers which influence precipitation of the Ag nanoparticles In addition we found that the formed Ag0 may reduce Ce4+ ions to Ce3+ ions during the annealing process which inhibits the growth of the Ag nanoparticles
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