title: [VUV spectral properties of MO-Y2O3-B2O3 : Re (M = Mg, Sr; Re = Eu, Tb)].
abstract: Eu and Tb doped 17MO-7.88Y2O3-75B2O3 samples were prepared by the solid state reaction. VUV excitation properties and luminescence properties under VUV excitation were studied. Excitation spectra exhibited high absorption in VUV region (120-220 nm). There existed strong emission peaking at 591 and 613 nm corresponding to the 5D0 --> 7F(J) (J = 1, 2, 3, 4) emission transition of Eu3+ when MgO-Y2O3-BO3 : Eu was energized by the VUV radiation (147 nm). By the introduction of Sr into MgO-Y2O3-BO2O3: Eu absorption peaking at 147 nm and red emission peaking at 613 nm are enhanced strongly. Besides the host absorption band of MgO-Y2O3-B2O3 : Tb, there existed strong absorption band peaking at 170, 178, 195, 204, 225 nm corresponding to the 4f(8)-4f(7) 5d transition of Tb3+; emission spectra showed strong emission peaks at 491, 547, 590, 621 nm corresponding to the 5D4 --> 7F(J) (J = 6, 5, 4 and 3) emission transition of Tb3+.
authors.affiliation: Ministry of Education Key Lab of Materials for Information Storage and Display, Institute of Photoelectron Technology, Beijing Jiaotong University, Beijing 100044, China.
authors.forename: Zhong-Yi
authors.initials: ZY
authors.lastname: Liang
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: He
authors.forename: Yan-Ning
authors.initials: YN
authors.lastname: Shi