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Terbium-activated phosphors

Radiation from an aperture lamp is emitted in tight "fan" configuration. For. scanning a sheet of printed paper, it is ideal since the emission is concentrated in a relatively narrow band. Hie phosphor most used for this application is Mg2GKi204 Mn. More recently, some of the terbium activated phosphors like (Mg.CelAlnOigrTb , LaP04 Ce Tb , and Y2SiOg Ce Tb have been employed because the major part of their emission is concentrated in the 543 nm line. [Pg.683]

Behenic acid Dicatechol borate, di-o-tolyl guanidine salt Zinc 2-ethylhexanoate activator, phosphate solutions Zinc oxide activator, phosphor Erbium oxide Terbium activator, plastics Triallyl trimellitate activator, potting... [Pg.4790]

Sodium terbium borate is used in solid-state devices. The oxide has potential application as an activator for green phosphors used in color TV tubes. It can be used with Zr02 as a crystal stabilizer of fuel cells which operate at elevated temperature. Few other uses have been found. [Pg.189]

There are few uses for terbium. However, terbium can be used as an activator for green phosphor in TV tubes, and some of its compounds are used to produce laser lights. It is also used to dope (coat) some forms of solid-state instruments, as a stabilizer in fuel cells so that they can operate at high temperatures, and as a metal for control rods in nuclear reactors. [Pg.293]

Natural teeth exhibit blue-white fluorescence in the long-wavelength UV [5.435]-[5.437]. Luminescent pigments are used to imitate this phenomena in artificial teeth. They are added to the ceramic paste at a concentration of 0.3-0.5 wt%. Yttrium silicates doped with cerium, terbium, and manganese give the best results [5.438]. The excitation maximum of these phosphors is in the range 325-370 nm. The fluorescence color of the teeth can be varied by changing the concentration of activators. [Pg.261]

EINECS 231-137-6 Terbium. A lanthanide element phosphor activator, dope for solid-state devices, mp = 1356" bp= 3230" d = 8.27. Atomergic Chemetals Cerac Rhdne-Poulenc Sigma-Aldrich Fine Chem. [Pg.601]

Europium has not many applications. Commercial applications of europium almost always take advantage of the phosphorescence, either in the 2+, or 3+ oxidation state. Industrial application started in the 1960s (Wickersheim and Lefever 1964). Many advances have been made since, leading to the discoveiy of europium activated yttrium oxysulfide (YaOaSiEu " ). This is a red phosphor. Other main industrial phosphors doped with europium are Sr5(P04)3Cl Eu and BaMgAliiOiviEu " for blue, and Y203 Eu " for red. Green phosphors involve terbium (Tb (Caro 1998 Nazarov et al. 2004). The phosphors are for instance used in flat screen monitors and televisions. [Pg.100]

Nazarov MV, Jeon DY, Kang JH, Popovici E-J, Muresan L-E, Zamoiyanskaya MV, Tsukerblat BS (2004) Luminescence properties of europium-terbium double activated calcium tungstate phosphor. Solid State Commun 131 307-311 Nazeri PP, Trzaskoma-Paulette PP, Bau D (1997) Synthesis and properties of cerium and titanium oxide thin coatings for corrosion protection of 304 stainless steel. J Sol-Gel Sci Technol 10 317-331 NdFeB-info.com, 2015... [Pg.105]

Rare-earth phosphors are widely used for general illumination (fluorescent lamps) and displays (cathode ray tube, backlights for liquid crystal displays, and plasma display panels). Major rare earths present in the phosphor are cerium, europium, and terbium, which are optically active because of the... [Pg.182]

Surface-modified nanobeads, beads where the chelates have shorter distance to the respective acceptor-labeled reactant, are also used to create proximity in TR-FRET assays such as cAMP immtmoassay and assays of kinase activities by the Molecular Devices IMAP system. The kinase assays apply fluorescent peptides as substrates, which after phosphorylation are collected to beads by complex formation between phosphor and the trivalent metalhc ions on the beads. Fluorescent terbium chelates, substituted with a phosphor group, provide thereafter the energy-donating groups to create sensitized signal on bead surfaces [37]. [Pg.370]


See other pages where Terbium-activated phosphors is mentioned: [Pg.967]    [Pg.967]    [Pg.292]    [Pg.1600]    [Pg.4]    [Pg.218]    [Pg.154]    [Pg.73]    [Pg.547]    [Pg.547]    [Pg.132]    [Pg.43]    [Pg.686]    [Pg.678]    [Pg.43]    [Pg.216]    [Pg.293]    [Pg.727]    [Pg.229]    [Pg.232]    [Pg.666]    [Pg.760]    [Pg.733]    [Pg.724]    [Pg.758]    [Pg.678]   


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