Novel UV-emitting single crystalline film phosphors grown by LPE method

This work reports the development of new types of UV-emitting phosphors based on single crystalline films (SCF) of aluminum garnet and perovskite compounds grown by the liquid phase epitaxy method. We consider peculiarities of the growth and the luminescent and scintillation properties of the following four types of UV SCF phosphors: i) Ce-doped SCF of Y-Lu-Al-perovskites with the Ce3+ emission in the 300-450 nm range of the decay time of 16-17 ns; ii) Pr-doped SCF of Y-Lu-Al garnets and perovskites with the Pr3+ emission in the 300-400 nm and 235-330 nm ranges with the decay time of 13-19 and 7-8 ns, respectively; iii) La3+ or Sc3+ doped SCF of Y-Lu-Al-garnets, emitting in the 280-400 nm range due to formation of the La-Y,La-Lu, Sc-Y,Sc-Lu and Sc-Al centers with decay time of the order of several hundreds of nanoseconds: iv) Bi3+ doped SCF of garnets with Bi3+ emission in 275-350 nm with decay time of about 1.9 mu s. (C) 2009 Elsevier Ltd. All rights reserved.