title: Correlation between emission property and concentration of Sn2+ center in the SnO-ZnO-P2O5 glass.
abstract: The authors report on the correlation between the photoluminescence (PL) property and the SnO amount in SnO-ZnO-P2O5 (SZP) glass. In the PL excitation (PLE) spectra of the SZP glass containing Sn2+ emission center, two S1 states, one of which is strongly affected by SnO amount, are assumed to exist. The PLE band closely correlates with the optical band edge originating from Sn2+ species, and they both largely red-shifts with increasing amount of SnO. The emission decay time of the SZP glass decreased with increasing amount of SnO and the internal quantum efficiencies of the SZP glasses containing 1~5 mol% of SnO are comparable to that of MgWO4. It is expected that the composition-dependent S1 state (the lower energy excitation band) governs the quantum efficiency of the SZP glasses.
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, Japan. masai_h@noncry.kuicr.kyoto-u.ac.jp
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Masai
authors.forename: Toshiro
authors.initials: T
authors.lastname: Tanimoto
authors.forename: Takumi
authors.initials: T
authors.lastname: Fujiwara
authors.forename: Syuji
authors.initials: S
authors.lastname: Matsumoto
authors.forename: Yomei
authors.initials: Y
authors.lastname: Tokuda
authors.forename: Toshinobu
authors.initials: T
authors.lastname: Yoko
mesh_terms: D005898:Glass / Q000737:chemistry*; D008029:Lighting / Q000295:instrumentation* / Q000379:methods*; D008962:Models, Theoretical; D055096:Optical Devices; D017553:Phosphorus Compounds / Q000737:chemistry; D011789:Quantum Theory; D013696:Temperature; D014001:Tin / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D017553:Phosphorus Compounds; D017971:Tin Compounds; C012500:phosphorus pentoxide; D014001:Tin; C045358:stannic oxide; D015034:Zinc Oxide