Synthesis and characterization of lanthanide orthothiophosphates: LaPS4

摘要

The single crystal structure of LaPS4, (1), is reported. The space group is tetragonal, I4(1)lacd. Unit cell dimensions are a = 10.9641(3) angstrom and c = 19.4828(9) angstrom. The far infrared absorption and Raman spectra (100-600 cm(-1)) are consistent with the PS43- groups being in a distorted tetrahedral geometry. The room temperature emission spectrum of LaPS4 doped with Er3+ is also presented. Emission peaks at 529, 534, 549, and 554 nm were observed when the sample was excited at 492 nm. The compound reported here is isomorphous and isostructural to several other lanthanide orthothiophosphates. (c) 2005 Elsevier B.V. All rights reserved.