Cerium luminescence in nd perovskites |
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| Authors: | AA Setlur U Happek |
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| Institution: | a GE Global Research Center, 1 Research Circle, Niskayuna, NY 12309, USA
b Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA |
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| Abstract: | The luminescence of Ce3+ in perovskite (ABO3) hosts with nd0 B-site cations, specifically Ca(Hf,Zr)O3 and (La,Gd)ScO3, is investigated in this report. The energy position of the Ce3+ excitation and emission bands in these perovskites is compared to those of typical Al3+ perovskites; we find a Ce3+ 5d1 centroid shift and Stokes shift that are larger versus the corresponding values for the Al3+ perovskites. It is also shown that Ce3+ luminescence quenching is due to Ce3+ photoionization. The comparison between these perovskites shows reasonable correlations between Ce3+ luminescence quenching, the energy position of the Ce3+ 5d1 excited state with respect to the host conduction band, and the host composition. |
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| Keywords: | Perovskites Ce3+ Luminescence |
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