Jump to main content
Jump to site search

Issue 26, 2018
Previous Article Next Article

Tb3+- and Yb3+-doped novel KBaLu(MoO4)3 crystals with disordered chained structure showing down- and up-conversion luminescence

Author affiliations

Abstract

In this study, a novel dual-mode luminescence phosphor KBaLu(MoO4)3:Tb3+,Yb3+ has been synthesized by high-temperature solid-state reactions, and the crystal structures have been determined for the first time. Single-crystal X-ray diffraction data reveal that its space groups are C2/c. The crystalline structure is constituted by K/BaO8 distorted square antiprisms, distorted LuO8 polyhedra and two kinds of distorted MoO4 tetrahedra, which form chains lying along the c-axis. Spectroscopic properties and energy transfer mechanisms are investigated by detailed analyses of emission and excitation spectra and excited-state lifetimes. The KBaLu(MoO4)3:Tb3+,Yb3+ phosphor shows dominant green emissions in the visible region, which are due to 5D47F5 transition of Tb3+ under excitation light in ultraviolet region as well as a 980 nm laser, and the CIE coordinates are close to the Society of Motion Picture and Television Engineers (SMPTE) standard values for primary green (0.310, 0.595). With the increasing temperature, the luminescence of KBaLu(MoO4)3:Tb3+,Yb3+ phosphor decreases almost linearly with the CIE coordinate variation from (0.326, 0.616) to (0.327, 0.530), which results in photoluminescence color variation from primary green to yellowish-green. The present results demonstrate the successful synthesis of a dual-mode luminescence material KBaLu(MoO4)3:Tb3+,Yb3+ phosphor with both up- and down-conversion luminescence properties; moreover, it can be used as a potential spectrum converter in display lighting and anti-counterfeiting.

Graphical abstract: Tb3+- and Yb3+-doped novel KBaLu(MoO4)3 crystals with disordered chained structure showing down- and up-conversion luminescence

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Mar 2018, accepted on 19 May 2018 and first published on 22 May 2018


Article type: Paper
DOI: 10.1039/C8CE00461G
Citation: CrystEngComm, 2018,20, 3657-3665
  •   Request permissions

    Tb3+- and Yb3+-doped novel KBaLu(MoO4)3 crystals with disordered chained structure showing down- and up-conversion luminescence

    G. Q. Wang, L. Y. Li, Y. N. Feng, H. Yu and X. H. Zheng, CrystEngComm, 2018, 20, 3657
    DOI: 10.1039/C8CE00461G

Search articles by author

Spotlight

Advertisements