| description: |
Main purpose of the present work is to demonstrate the possibilities to increase the efficiency of both the luminophors-transformers of infrared(IR) radiation and sensitive to IR storage phosphors. It depends on the efficiency of energy transfer between different excited impurities or between traps and luminescence centres. The increase of efficiency can be achieved by controlled binding of the impurity and intrinsic defects into complexes during the process of formation of solid solution. Also it can be increased due to close spacing of impurities in the regions of partial decomposition of solid solution (dislocations, block boundaries, etc.). To achieve the necessary result, redox interaction of impurities at formation of solid solution will be used, and also partial aggregation of impurities by means of limited diffusion rate at lowered temperatures at synthesis, or by means of plastic deformation of luminophor microcrystals with subsequent annealing. We suppose that our investigations enable to optimize the structure of luminescence and trapping centres for particular mechanisms of energy transfer. The studies yield new results suitable for papers to be submitted to basic scientific magazines like Journal of Luminescence or Solid State Communications. We shall publish more exact information on mechanisms of energy transfer both in storage phosphors and in the luminophors-transformers of IR radiation which add up the energy of exciting quanta within cascade transitions. Besides the publication of scientific papers, the new technologies of synthesis and treatment of luminophors are expected to be worked out. The technologies should be protected by patents because of essential expanding of the field of application of IR-to-visible light transformers in case of the increase in their efficiency. They can be used, for example, in the information display systems. The same is true also for storage phosphors which can be used in display devices too.
|