(Er, Yb)-co-doped multifunctional ZnO transparent hybrid materials: fabrication, luminescent and magnetic properties

Abstract

We report the successful fabrication of (Er3+, Yb3+)-co-doped ZnO transparent hybrid materials by controlling compositions and crystallization. The singly precipitated ZnO nanocrystals were preferentially oriented along the c-axis on the glass surface, leading to an intense luminescence at the bandgap energy of ZnO. The Er3+ and Yb3+ ions assembled around the low-phonon-energy ZnO nanocrystals, achieving an enhanced two-photon upconversion emission in the visible region. In addition, the glass ceramic exhibited typical paramagnetism with antiferromagnetic interactions. The multifunctional combination in such a low-cost, easily shapable and environmentally friendly bulk material may find a wide range of device applications.

Identification of defect-related emissions in ZnO hybrid materials

“…%) was prepared by a non-equilibrium melt-quenching technique followed by heat treatment. 30,31 In brief, raw materials of analytical reagents of ZnO, B 2 O 3 , SiO 2 , CaO, and K 2 O powders were weighed according to the designed concentrations, thoroughly mixed, stirred, and transferred to a covered alumina crucible, and melted at around 1350 C in an electric furnace for 40 min in air. The melt was quickly cast onto a cold brass plate, and subsequently annealed at ca.…”

Improving pure red upconversion emission of Co-doped Y2O3:Yb3+–Er3+ nanocrystals with a combination of sodium sulfide and surfactant Pluronic-F127

“…UC of Er 3+ -doped nanoparticles sensitized with Yb 3+ has been widely studied in oxide ceramics such as Y 2 O 3 [11,25,26], yttrium aluminum garnet (YAG) [27,28], ZnO [29], ZrO 2 [21,30] and LaF 3 [31,32]. However, the most efficient upconverting phosphors are yttrium-based inorganic crystals, such as yttrium oxide (Y 2 O 3 ) [11,33], yttrium fluoride (YF 3 ) [34], yttrium oxysulfide (Y 2 O 2 S) [34][35][36], and sodium yttrium fluoride (NaYF 4 ) [37,38].…”

Effect of Rare-Earth Doping on Structural and Luminescent Properties of Screen-Printed ZnO Films

“…Despite this, the most RE ions being a single dopant did not demonstrate an efficient energy transfer from the ZnO host. At the same time, co-doping with different lanthanides allowed their luminescence to be enhanced as it was demonstrated, for instance, for Er 3+ -Yb 3+ co-doped oxides (19).…”