title: BN-coated Ca(1-x)Sr(x)S:Eu solid-solution nanowires with tunable red light emission.
abstract: We report on the controlled growth of novel BN-coated Ca(1-x)Sr(x)S:Eu nanowires via a solid-liquid-solid process. The Ca(1-x)Sr(x)S solid solution forms as one-dimensional nanowires and has been coated with homogeneous protective BN nanolayers. The structure and luminescence properties of this new nanocomposite have been systematically investigated. High-spatial-resolution cathodoluminescence investigations reveal that effective red color tuning has been achieved by tailoring the composition of the Ca(1-x)Sr(x)S nanowires. Moreover, codoping of Ce(3+) and Eu(2+) in the CaS nanowire can induce energy transfer in the matrix and make it possible to obtain enhanced orange color in the nanowires. The BN-coated Ca(1-x)Sr(x)S:Eu solid-solution nanowires are envisaged to be valuable red-emitting nanophosphors and useful in advanced nanodevices and white LEDs.
authors.affiliation: School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Lin
authors.forename: Yang
authors.initials: Y
authors.lastname: Huang
authors.forename: Jiao
authors.initials: J
authors.lastname: Mi
authors.forename: Xinghua
authors.initials: X
authors.lastname: Zhang
authors.forename: Zunming
authors.initials: Z
authors.lastname: Lu
authors.forename: Xuewen
authors.initials: X
authors.lastname: Xu
authors.forename: Ying
authors.initials: Y
authors.lastname: Fan
authors.forename: Jin
authors.initials: J
authors.lastname: Zou
authors.forename: Chengchun
authors.initials: C
authors.lastname: Tang