Spectral studies on Cu2+ doped sodium leadbismuthate glasses

Copper doped sodium leadbismuthate glasses were prepared in the chemical composition (wt.%) 35Bi(2)O(3) + 35PbO + (30 - x)Na2O +xCuO (where x= 1, 2, 3 and 4). The optical spectra of the glasses have been investigated. The optical absorption spectra of Cu2+ doped glasses show a broad absorption band between 560 and 880 nm, which is attributed to the (2)Eg -> T-2(2g) transition of Cu2+ ion. FTIR spectral studies confirm the Bi-O bonds and the presence of [BiO3] pyramidal units. (c) 2006 Elsevier B.V. All rights reserved.