<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Influences of growth durations on characteristics of NaYF4:(Yb,Tm) upconversion materials"^^ . "NaYF4:(Yb,Tm) upconversion materials were synthesized by the simple hydrothermal method. Growth duration was varied from 4h to 12h under a growth temperature of 150oC. The structural, optical and surface morphology characteristics of the NaYF4:(Yb,Tm) UC materials were investigated. The XRD and SEM results illustrated that the NaYF4:(Yb,Tm) materials were transformed from the multiple phases (hexagonal and cubic) to the single-phase (hexagonal prism) as growth duration being longer than 8h with the average diameter and length of these prisms being about 0.5 µm and 2 µm, respectively. Under 980 nm laser excitation, the NaYF4:(Yb,Tm) emits at peaks of 450 nm (1D2→ 3F4), 475 nm (1G4→3H6), 647 nm (1G4→3F4) and 697 nm (3F3→3H6), with the highest emission belonging to NaYF4:(Yb,Tm) grown for 8h."^^ . "2019" . . "35" . "4" . . "VNU Journal of Science: Natural Science and Technology"^^ . . . "Influences of growth durations on characteristics of NaYF4:(Yb,Tm) upconversion materials"^^ . . . "08668612" . . . . . . . . . . . . . "Van Thanh"^^ . "Hoang"^^ . "Van Thanh Hoang"^^ . . "Thi Dung"^^ . "Nguyen"^^ . "Thi Dung Nguyen"^^ . . "Dinh Lam"^^ . "Nguyen"^^ . "Dinh Lam Nguyen"^^ . . . . . . "Influences of growth durations on characteristics of NaYF4:(Yb,Tm) upconversion materials (Microsoft Word)"^^ . . . . . "4965) Lâm 0902.233.144 (27-10, 1-12, 3-12).docx"^^ . . . "Influences of growth durations on characteristics of NaYF4:(Yb,Tm) upconversion materials (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #3809 \n\nInfluences of growth durations on characteristics of NaYF4:(Yb,Tm) upconversion materials\n\n" . "text/html" . . . "Engineering Physics" . .