Article ID Journal Published Year Pages File Type
9577565 Chemical Physics Letters 2005 4 Pages PDF
Abstract
The photoluminescence (PL) and PL excitation spectra of pure and Pt-loaded CeO2 powders were measured, and the PL peaks from the Sm3+ impurity were observed. We found that, as the Pt concentration increases, the peak intensity decreases and the PL excitation band blueshifts. These relationships can be explained by considering electron transfer and difference in work function between CeO2 and Pt. Moreover, we found a quantitative relationship between the blueshift and the difference in work function. These results suggest that the degree of contact and extent of electron transfer between CeO2 and Pt can be estimated from PL spectroscopy.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
Authors
, ,