Efficient upconversion luminescence in Er 3+ /Yb 3+ co-doped cubic NaYF 4 single crystals by vertical Bridgman method with KF flux

Near-Infrared Light-Triggered Visible Upconversion Emissions in Er3+/Yb3+-Codoped Y2Mo4O15 Microparticles for Simultaneous Noncontact Optical Thermometry and Solid-State Lighting

“…Utilizing the General Structure Analysis System (GSAS) software, the typical Rietveld refinement of the Er 3+ / Yb 3+ -codoped Y 2 Mo 4 O 15 microparticles with the content of 40 mol % of Yb 3+ ions was done to understand more deeply the phase structure of the resultant microparticles. The Rietveld refinement result shown in Figure1aconfirmed that the measured and calculated XRD patterns matched well with each other, indicating that the resultant products were made up of a single pure monoclinic phase with a space group of P121/ c(14). Furthermore, as listed in TableS1, the values of weighted profile R-factor (R wp ), expected R-factor (R p ), and χ 2 were 5.94%, 4.65%, and 2.52, respectively.…”