Abstract
The formation of single-phase, morphological information and the impurities present in the developed phosphor has been identified by using x-ray diffraction, scanning electron microscope, and Fourier transform infrared analysis. Nontunable intense green upconversion emission from single-phase tetragonal -codoped phosphor upon 980 nm excitation has been reported. The effect of codoping with ions on the upconversion emission bands in phosphor has been discussed, and the possible upconversion mechanisms involved have been explained. The experimental results confirm the suitability of the developed phosphor in display devices and security applications.
© 2014 Optical Society of America
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