Fluorescence of Eu³⁺‐Activated Garnets Containing Pentavalent Vanadium

has garnet structure and shows a broad emission band with a maximum at about 500 nm under short‐wave uv excitation. Eu³⁺ is introduced according to the substitution . Unlike the emission of the usual Eu³⁺ ‐activated garnets (like YAG) the Eu³⁺ emission shows strong transitions in this case. The energy transfer from the vanadate group to the Eu³⁺ ion is not very efficient. This is ascribed to the small value of the overlap of the Eu³⁺ and V⁵⁺ orbitals, the V‐O‐Eu angles being 90° and 120°.