Peculiarities of luminescence and scintillation properties of YAP: Ce and LuAP:Ce single crystals and single crystalline films

Luminescent properties and the energy transfer from host to Ce3+ ions are analyzed in single crystalline films (SCF) of YAlO3:Ce (YAP:Ce), Y(1-x)Lu(x)AP:Ce (YLuAP:Ce) and LuAlO3:Ce (LuAP:Ce) perovskites in comparison with their single crystal (SC) analogues using the time-resolved luminescence spectroscopy under synchrotron radiation excitation. It is shown that the main peculiarity of luminescent properties of YAP:Ce, YLuAP:Ce and LuAG:Ce SCF is determined by the extremely low concentration Of Y-Al and Lu-Al antisite defects and vacancy-type defects in SCF as compared to SC. The advantages of phosphors based on (Y-Lu)AP:Ce SCF are due to the absence of emission and trapping centers in these SCF which are connected with the above mentioned bulk crystal defects. (C) 2007 Published by Elsevier Ltd.