The luminescent properties of Ba 3Gd 1− xLn x(PO 4) 3 under synchrotron radiation VUV excitation

Abstract

The luminescent properties of eulytite structural ternary orthophosphates Ba 3Gd(PO 4) 3:Ln 3+ (Ln 3+ = Ce 3+, Pr 3+, Tb 3+), Ba 3Ce(PO 4) 3, Ba 3Gd(PO 4) 3 and Ba 3Tb(PO 4) 3 under UV and synchrotron radiation VUV excitation were investigated. The host related absorption and the f–d transitions of Ln 3+ ions in the host lattices are identified. An empirical expression on the lowest f–d transition energies and n values for 4f n -series Ln 3+ ions in the host lattices is suggested.