Bright white light through up-conversion of a single NIR source from sol-gel-derived thin film made with Ln3+-doped LaF3 nanoparticles.
White light was generated from a single silica thin film made with Yb0.75La0.2Eu0.05F3, La0.45Yb0.5Er0.05F3, and La0.75Yb0.2Tm0.05F3 nanoparticles by exciting with a single source near-infrared light (980 nm CW diode laser). Eu3+ and Tm3+ ions are responsible for red and blue emission, respectively. Er3+ ion is responsible for green as well as red emission. The Commission Internationale de l'Eclairage (CIE) coordinates of the resulting light were easily adjusted by controlling the concentration of Ln3+ (Eu3+, Er3+, Tm3+) ions in the nanoparticles as well as the concentration of Ln3+-doped nanoparticles in the sol-gel thin layer.
Sivakumar
Sri
S
Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, British Columbia, Canada V8W 3V6.
van Veggel
Frank C J M
FC
Raudsepp
Mati
M
D005459:Fluorides / Q000737:chemistry*; D005782:Gels / Q000737:chemistry*; D007811:Lanthanum / Q000737:chemistry*; D008027:Light; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry*; D010777:Photochemistry; D012822:Silicon Dioxide / Q000737:chemistry; D015018:Ytterbium / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry
D005782:Gels; D008567:Membranes, Artificial; C083668:lanthanum trifluoride; D007811:Lanthanum; D012822:Silicon Dioxide; D015040:Zirconium; D015018:Ytterbium; D005459:Fluorides; C028541:zirconium oxide