Rare earth doped fluoride silicate glass Ceramics and Luminescence Properties

Title: Rare earth doped fluoride silicate glass Ceramics and Luminescence Properties
　　Author: Panyu
　　Degree-granting unit: Zhejiang University
　　Keywords: SrF_2 nanocrystals;; Yb ~ (3);; Er ~ (3);; Tm ~ (3);; glass-ceramic;; upconversion;; quantum cutting
　　Summary:
　　Study prepared with SrF_2: Yb ~ (3) nanocrystals of glass-ceramic. XRD results show that after heat treatment Yb ~ (3) to strontium fluoride solution into the precipitation of nanocrystals. With the extension of time or heat treatment temperature, Yb ~ (3) in the Magnetic lifter fluoride nanocrystals doped with strontium miscellaneous increase and glass ceramics Yb ~ (3) the concentration quenching of luminescence than the glass in the high of the Yb ~ (3) glass-ceramics in the luminescence mechanism, according to the upconversion luminescence intensity variation with pump power, confirm Yb ~ (3) of the blue for the two-photon upconversion process.
　　Study prepared with SrF_2: Yb ~ (3), Er ~ (3) light-emitting nano-crystals of transparent glass-ceramic. Spectra show that in Er ~ (3) of the excitation band can produce by the Er ~ (3) to Yb ~ (3) energy transfer effect caused by light-emitting quantum cutting (with a highly efficient wavelength conversion function), combined with excellent http://www.999magnet.com/products/131-magnetic-lifter mechanical glass-ceramic processing performance and confirmed its effectiveness in improving the solar cell's potential applications.
　　Study prepared by a Class SrF_2: Yb ~ (3), Tm ~ (3) nanocrystals of a transparent light-emitting glass. Glass-ceramics under laser excitation at 980nm LD upconversion luminescence intensity increased over the glass samples 1-3 orders of magnitude. The upconversion mechanism is mainly for the Yb ~ (3)-Yb ~ (3) cooperation between the conversion, and Yb ~ (3)-Tm ~ (3) and Tm ~ (3)-Tm ~ (3) of the cross-relaxation between the energy transfer process.
　　Degree Year: 2010