| 摘要 |
This invention relates to luminescent materials, frequently known as "Phosphors" and suitable for use in cathode ray tubes where a high brightness display is required, for example, in the cockpit of an aircraft. In particular the luminescent material of the invention comprises a luminescent material comprising an aluminium garnet host material optionally including at least one of the elements scandium and gallium and activated by trivalent terbium and having a composition according to the formula RE3Al(5-(y+z))ScyGazO12:Tb, in which RE is one or more of the elements yttrium, gadolinium, lutetium and bismuth and y and z typically have values in the ranges 0</=y</=2 and 0</=z</=5.
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