title: Near-infrared emission of Yb3+ through energy transfer from ZnO to Yb3+ in glass ceramic containing ZnO nanocrystals.
abstract: Yb(3+)-doped glass and glass ceramic containing ZnO nanocrystals were prepared by the melting-quenching method and subsequent heat treatment. Intense near-IR emission around 1000 nm that originated from the transition of Yb(3+):(2)F(5/2)→(2)F(7/2) was generated as a result of energy transfer from oxygen interstitials in ZnO nanocrystals to Yb(3+) with energy transfer efficiency of about 10%. The quantum yield for the near-IR emission of Yb(3+) under the excitation of 390 nm was about 16.7%. These materials have potential application in achieving high-efficiency Si solar cells via spectrum modification.
authors.affiliation: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Luo
authors.forename: Xvsheng
authors.initials: X
authors.lastname: Qiao
authors.forename: Xianping
authors.initials: X
authors.lastname: Fan
authors.forename: Xianghua
authors.initials: X
authors.lastname: Zhang
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D004735:Energy Transfer; D005898:Glass / Q000737:chemistry*; D007259:Infrared Rays; D008163:Luminescent Measurements; D053758:Nanoparticles / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D015018:Ytterbium; D015034:Zinc Oxide