title: Triple-doped KMnF3:Yb3+/Er3+/Tm3+ nanocubes: four-color upconversion emissions with strong red and near-infrared bands.
abstract: Triple-doped (Yb(3+)/Er(3+)/Tm(3+)) KMnF3 nanocubes with uniform sizes of 250 nm were synthesized by a facile hydrothermal route using the oleic acid as the capping agent. It was found that these nanocubes can simultaneously exhibited four-color (blue, green, red and NIR) upconversion emissions under a single 980 nm near-infrared (NIR) laser excitation, which should have potential multicolor in vivo imaging applications. Specifically, the red (660 nm) and NIR (800 nm) peaks, known as two "optical windows" for imaging biological tissues, were strong. The spectral and pump analyses indicated the two-photon processes were responsible for the both red and NIR emissions.
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.|College of Materials Science and Engineering, Liaoning Technical University, Fuxin city 123000. P. R. China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Hong
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: Renlu
authors.initials: R
authors.lastname: Han
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: Junhui
authors.initials: J
authors.lastname: Shi
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.|School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: Zongjun
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: Shujuan
authors.initials: S
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: You
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001. P. R. China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Gan