title: Orthorhombic KSc2F7:Yb/Er nanorods: controlled synthesis and strong red upconversion emission.
abstract: For the first time, we have synthesized orthorhombic phase KSc2F7:20%Yb/2%Er (KSc2F7:Yb/Er) nanorods and further studied the crystal structure and morphology evolution, as well as their upconversion (UC) properties under varying F(-) contents and reaction temperatures. Different from β-NaYF4:20%Yb/2%Er (NaYF4:Yb/Er) nanorods that usually give strong green UC luminescence, strong red UC emission was observed in KSc2F7:Yb/Er nanorods under 980 nm laser excitation. Their UC mechanisms are further analyzed and compared. This study provides a novel type of rare earth nanorods with strong red UC emissions which have great potential in high resolution 3-dimensional bioimaging, color displays, solid-state lasers, and photocatalysis.
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China. jjzhu@nju.edu.cn.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Ding
authors.forename: Xue
authors.initials: X
authors.lastname: Teng
authors.forename: Hao
authors.initials: H
authors.lastname: Zhu
authors.forename: Lili
authors.initials: L
authors.lastname: Wang
authors.forename: Wenbo
authors.initials: W
authors.lastname: Pei
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Zhu
authors.forename: Ling
authors.initials: L
authors.lastname: Huang
authors.forename: Wei
authors.initials: W
authors.lastname: Huang