Abstract
The -doped phosphor was prepared by the high temperature solid-state reaction method. The temperature-dependent emission spectra and luminescence decay of ions were investigated from 10 to 300 K. The investigation was focused on the site distributions of ions in this host, which exhibited different spectroscopic features at varying temperatures. Two crystallography sites existed for ions in this host below 170 K, where no energy transfer could be detected between them. However, only one site was left from 170 K to room temperature. The photostability of the ion was evaluated by the photobleaching method. This investigation would be helpful for understanding the doping mechanism and applications of rare-earth ions doped in this phosphate host.
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