Luminescence of La3+ and Sc3+ impurity centers in YAlO3 single-crystalline films

摘要

The luminescence of La-Y(3+) and Sc-Y(3+) and Sc-Al(3+) centers created by lanthanum and scandium ions at and A cation sites of YAlO3 perovskite lattice was investigated. The features of emission of excitons localized at the mentioned centers in YAlO3:La and YAlO3:SC single-crystalline films were analyzed by means of time-resolved emission spectroscopy and luminescence decay kinetics measurements under excitation by synchrotron radiation at 9 and 300 K. (c) 2007 Published by Elsevier B.V.