Luminophores are applied either as powder layers, which due to scattering makes it completely opaque, and consequently reduces the light transmitted through the layer or as transparent materials in the form of single crystals, glasses or sintered ceramics. The transparency or translucency is particularly important if the desired luminescent material layer is more than several tens of microns, which is typical in detectors of ionizing radiation.
New process for fabrication of a luminescent material comprising a matrix of lutetium phosphate, doped with rare earth ions, which allows obtaining a translucent, solid and mechanically stable layer. The developed material exhibits a luminescence upon exposure to ultraviolet or ionizing radiation.
The produced material is characterized by a high transmission of emitted light, generated under the impact of excitation radiation, which significantly increases the signal at the recording electronic detector in relation to the strongly scattering layer, produced, for example, by classical method of deposition of coarse powders on a substrate. This makes it possible to increase the resolution and especially contrast of X-ray images. The manufacturing process takes place at relatively low temperatures without the use of high pressure during the thermal treatment, which simplifies of the manufacturing procedure and makes it less costly.
- Energy-efficient lighting
- Medical imaging
- Ionizing radiation detectors
Posted by Wrocławskie Centrum Badań EIT+, Posted on 24.05.2016