title: Preparation and upconversion emission modification of crystalline colloidal arrays and rare earth fluoride microcrystal composites.
abstract: In this paper, highly ordered crystalline colloidal arrays containing rare earth fluoride microcrystals were fabricated. The upconversion emission property of rare earth fluoride microcrystals in crystalline colloidal arrays was studied and modified. A significant suppression and enhancement of the upconversion emission from the rare earth fluorides can be observed in the regions of the photonic band gap and its band edge, respectively. The suppression or enhancement factor was shown to be related to the ordered degree of the crystalline colloidal arrays and is critical in the preparation of upconversion displays and low-threshold lasers.
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Jiayan
authors.initials: J
authors.lastname: Liao
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Zhengwen
authors.initials: Z
authors.lastname: Yang
authors.affiliation: College of Materials Science and Engineering, Tsinghua University, Beijing. 100084, China.
authors.forename: Jinbo
authors.initials: J
authors.lastname: Sun
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Shenfeng
authors.initials: S
authors.lastname: Lai
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Shao
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Jianbei
authors.initials: J
authors.lastname: Qiu
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Song
authors.affiliation: College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming. 650093, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang