Abstract
In this study, the new temperature-dependent phosphor, , was investigated for high-temperature thermometry. The photoluminescence intensity at emitted from was strong at temperatures higher than , whereas the peak intensities emitted from decreased due to the thermal quenching effect. Thus, the intensity ratio between those emissions showed an appropriate variation for thermometry over a wide temperature range. In addition, the phosphors showed a distinct change of visible emission colors from green to blue with increasing temperature. These findings suggest the applicability of these phosphors in visual thermo-sensors.
© 2011 Optical Society of America
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