The luminescence of silver(I) ions was investigated in diphosphate of compositions Na(2-x)Ag(x)ZnP2O7. The [P2O7] groups share corners with [ZnO4] tetrahedra in a layer arrangement. The Na/Ag atoms are located between layers in distorted oxygenated cubic sites sharing faces - with short intermetallic distances - or edges. Two luminescent centers were detected and attributed, respectively, to single Ag+ and Ag+-Ag+ pairs. The luminescent parameters are discussed with respect to the symmetry of the silver sites and of the ionocovalent character of the silver oxygen bonds. (C) 2000 Academic Press.
ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry