title: On the analogy between photoluminescence and carrier-type reversal in Bi- and Pb-doped glasses.
abstract: Reaction order in Bi-doped oxide glasses depends on the optical basicity of the glass host. Red and NIR photoluminescence (PL) bands result from Bi(2+) and Bin clusters, respectively. Very similar centers are present in Bi- and Pb-doped oxide and chalcogenide glasses. Bi-implanted and Bi melt-doped chalcogenide glasses display new PL bands, indicating that new Bi centers are formed. Bi-related PL bands have been observed in glasses with very similar compositions to those in which carrier-type reversal has been observed, indicating that these phenomena are related to the same Bi centers, which we suggest are interstitial Bi(2+) and Bi clusters.
authors.affiliation: Advanced Technology Institute, Department of Electronic Engineering, University of Surrey, Guildford, GU2 7XH, UK. m.a.hughes@surrey.ac.uk
authors.forename: Mark A
authors.initials: MA
authors.lastname: Hughes
authors.forename: Russell M
authors.initials: RM
authors.lastname: Gwilliam
authors.forename: Kevin
authors.initials: K
authors.lastname: Homewood
authors.forename: Behrad
authors.initials: B
authors.lastname: Gholipour
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Hewak
authors.forename: Tae-Hoon
authors.initials: TH
authors.lastname: Lee
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Elliott
authors.forename: Takenobu
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yasutake
authors.initials: Y
authors.lastname: Ohishi
authors.forename: Tomas
authors.initials: T
authors.lastname: Kohoutek
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Curry
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D018011:Chalcogens / Q000737:chemistry*; D003198:Computer Simulation; D005898:Glass / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing; D008956:Models, Chemical
chemical_list: D018011:Chalcogens; D007854:Lead; D001729:Bismuth