Fluorescence Properties of Alkaline Earth Oxyanions Activated by Divalent Ytterbium

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Abstract
The luminescence of Yb2+ in alkaline earth phosphates and vanadates is reported. Particular attention has been given to those compositions possessing apatite and spodiosite structures. Emissions from Yb2+ are broad and sensitive to host composition. Single and double emission bands are observed which exhibit a variety of temperature dependent relationships. The decay of the Yb2+ fluorescence, under cathode‐ray excitation, is short.