Room temperature photoluminescence of amorphous BaxSr1-xTiO3 doped with chromium

摘要

ABO(3) amorphous materials, such as BaTiO3 (BT), SrTiO3 (ST), PbTiO3 (PT), and BaxSr1-xTiO3 (BST) have recently attracted a good deal of attention due to their ferroelectric and electro-optical properties. Intense photoluminescence at room temperature was observed in amorphous titanate doped with chromium (BaxSr1-xTi1-yCryO3) prepared by the polymeric precursor method. Results indicated that substantial luminescence Lit room temperature was achieved with the addition of small Cr contents to amorphous BaxSr1-xTi1-yCryO3. Further addition of Cr or crystallization were deleterious to the intensity of the luminescent peak obtained for excitation using lambda = 488.0 nm. (C) 2003 Elsevier Inc. All rights reserved. [References: 24]