Upconversion(UC)phosphor Tm^(3+)doped YF_3 nano-crystals were prepared by hydrothermal method under different conditions and characterized by Field Transmission electron microscopy(TEM),Scanning electron microscopy(SEM)and X-ray diffraction(XRD).Their UC luminescence properties were studied by fluorescence spectrophotometer with 980 nm diode laser excitation,and impact of different grain sizes and morphology on the UC luminescence intensity was discussed.The fluorescence decay lifetime was calculated by Multi-exponential function fitting method.Results show that UC emission intensity was enhanced with the reduction of grain size,and the decay lifetime is 0.60 us.
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机译:Design, Synthesis and Characterization of Novel Sulfonamides Derivatives as Anticancer Agent Targeting EGFR TK, and Development of New Methods of Synthesis by Microwave Irradiation
机译:studies on asymmetric syntheses of Benzophenanthridine alkaloids and the Related spiro Compounds: studies on Chelidonine synthesis and Total synthesis of arnottins I and II