Hf. Folkerts et G. Blasse, 2 TYPES OF LUMINESCENCE FROM PB2-EARTH CARBONATES WITH THE ARAGONITE STRUCTURE( IN ALKALINE), Journal of physics and chemistry of solids, 57(3), 1996, pp. 303-306
The luminescence of Pb2+ as a dopant in alkaline-earth carbonates with
the aragonite structure is investigated. An ultra-violet and a visibl
e emission band have been observed, both originating from the same cen
ter. The former is ascribed to emission from the P-3(0,1) (6s6p) level
s of the Pb2+ ion, the latter to emission from a higher level which is
probably charge-transfer in nature. The (co-)existence of both bands
depends on the host-lattice.