Blueshifts in the ultraviolet absorption spectra of cerium oxide nanocrystallites
Journal of Applied Physics2003Vol. 94(5), pp. 3654–3656
Citations Over TimeTop 25% of 2003 papers
Abstract
Blueshifts in the ultraviolet absorption spectra have been observed in cerium oxide nanocrystallites. The mechanism of the absorption is a charge-transfer optical transition. The relationships among the blueshift, valence state of cerium ions, and the particle size are formulated. The blueshifts are well explained for diameters down to less than a few nanometers by the change in the electronic band structure.
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