Abstract
A blue luminescent emission band (440 nm) has been optimised in Y1 – xBixNbO (x = 0.005) for low voltage phosphor applications. The material has useful properties when compared to a commercially available phosphor. The role of the Bi3+ ion dopant is discussed in this lattice and in the related Gd1 – xBixNbO4 lattice. The movement of the emission band with %Bi3+ is rationalised using a simple electronic band structure model. It is demonstrated that the nature (symmetry) of the chemical environment of the Bi3+ is important for the influence of the cation on the luminescent properties.
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