Properties of a new, efficient, blue-emitting material for applications in upconversion displays: Yb, Tm:KY_3F_10

Abstract

The properties of Yb, Tm:KY3F1o, a cubic fluoride crystal, are described that make it attractive as the blue emitter in two-dimensional photonic displays. Its peak excitation wavelength for blue upconversion emission is 974.7 nm, where efficient diode laser pump sources are available. The maximum upconversion efficiency measured thus far is 4.4%.

Multicolored redox active upconverter cerium oxide nanoparticle for bio-imaging and therapeutics

“…On co-doping with Ho 3+ green emission appears as a result of 5 F 4 , 5 S 2 → 5 I 8 transition along with weak red light. Tm 3+ co-doping results in weak blue emission ( 1 G 4 → 3 H 6 ) due to lower probability for multi photon transitions 20. UNC powders when excited by 975 nm light from the diode laser could be easily seen to emit red light (Fig.…”

Effect of Ce co-doping on KY3F10:Pr crystals

“…In literature are reported some papers regarding the growth of KY 3 F 10 as host material, doped with different RE, where it has been utilized or Bridgman [4] or micro-pulling down [5] or Czochralski [6] A c c e p t e d m a n u s c r i p t melts congruently at a temperature about 1300K. Moreover it presents good optical and thermomechanical properties, all fascinating features for optically based applications [8].…”

Co-Doping Effects of Zn2+ on Upconversion Luminescence of Gd2O3:Er Nanophosphors

“…for lattice environment changing (1)(2)(3)(4)(5)(6)(7). As a new kind of solidstate-displaying, upconversion (UC) displaying devices using rare-earth ions as emitters are gaining more and more attentions by pumping with low-cost high-power infra-diode lasers (8,9).…”

“…For UC equipments, the displaying materials can be rare-earth doped fluorides and oxides phosphors (9). Among them, fluorides based UC phosphors show higher efficient UC luminescence than the oxides for their lower phonon energy.…”