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Up-conversion phosphors

Rare earth oxysulfides are also fine host materials for Ln -based up-conversion phosphors. The commonly used dopants in R2O2S include the sensitizer Yb, and the emitter Er and Tm ions (Figure 84). NIR... [Pg.446]

A large number of hosts were studied in which Yb3+ and Ln3+ were combined. Obviously, the phonon spectrum will be critical to the overall operation of up-conversion phosphors. Some of the hosts studied are given in the diagram shown on the next page as follows ... [Pg.595]

After considerable work, it was determined that the hosts which work best in this application are those in which vlbronic coupling is minimized. This was established by determining and comparing the phonon dispersion branches of the various compounds. It was found that those hosts which have low energy optical branches in the phonon spectrum function best for up-conversion phosphor applications. Note that this is akin to minimizing ground state perturbation at the activator site proper choice of host. The best hosts were found to be ... [Pg.596]

Yi GS, Lu HC, Zhao SY, Yue G, Yang WJ, Chen DP, et al. Synthesis, characterization, and biological application of size-controlled nanocrystaUine NaYp4 Yb, Er infrared-to-visible up-conversion phosphors. Nano Lett 2004 4(11) 2191. [Pg.199]

Yi GS, Sun BQ, Yang FZ, Chen DP, Zhou YX, Cheng J. Synthesis and characterization of high-efficiency nanocrystal up-conversion phosphors ytterbium and erbium codoped lanthanum molybdate. Chem Mater 2002 14(7) 2910. [Pg.199]

Possible future applications of up-converting phosphors include (i) three-dimensional displays 249-251 (ii) fiber optic amplifiers (referred to above) that operate at 1.55, 1.46, and 1.31 pm,, 2 1-255 (iii) up-conversion lasers 250 and (iv) remote sensing thermometers for high-temperature applications (utilizing the temperature dependence of optical properties of, for example, cubic Y203 Er3+).256-258... [Pg.710]

The "up-conversion" (Anti-Stokes) phosphors have been used in solid state indicator lamps incorporated within various electronic equipment for several years before being supplanted by the visible-emitting GaAlAs Si solid state diode. [Pg.595]

G. Roshan Deen, Up-conversion emission in violet from neodymium oxalate and neodymium oxide phosphors obtained by microemulsion technique. Mater. Sci. Eng. C 16, 153-156 (2001). [Pg.196]

Springer-Verlag Berlin Heidelberg 2017 R.S. Liu (ed.), Phosphors, Up Conversion Nano Particles,... [Pg.459]

See other pages where Up-conversion phosphors is mentioned: [Pg.691]    [Pg.710]    [Pg.373]    [Pg.301]    [Pg.503]    [Pg.58]    [Pg.139]    [Pg.691]    [Pg.710]    [Pg.373]    [Pg.301]    [Pg.503]    [Pg.58]    [Pg.139]    [Pg.284]    [Pg.701]    [Pg.709]    [Pg.710]    [Pg.413]    [Pg.424]    [Pg.440]    [Pg.448]    [Pg.535]    [Pg.424]    [Pg.2753]    [Pg.287]    [Pg.31]    [Pg.55]    [Pg.67]    [Pg.153]    [Pg.154]    [Pg.173]    [Pg.219]    [Pg.247]    [Pg.265]    [Pg.285]    [Pg.343]    [Pg.371]    [Pg.399]    [Pg.421]    [Pg.459]    [Pg.461]    [Pg.499]    [Pg.502]    [Pg.509]   
See also in sourсe #XX -- [ Pg.595 ]

See also in sourсe #XX -- [ Pg.301 ]



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