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Luminescence
Editore:
Reference Series Books LLC Nov 2012, 2012
ISBN 10: 1157718450
ISBN 13: 9781157718451
Nuovo
Taschenbuch
Da: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Germania
Valutazione del venditore 5 su 5 stelle
Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Source: Wikipedia. Pages: 48. Chapters: Fluorescence, Triboluminescence, Sonoluminescence, Optical brightener, Electroluminescence, Cathodoluminescence, Photoluminescence, Phosphor, Phosphorescence, Incandescence, Photoelectrochemical processes, Black light, Glow stick, Fluorophore, Chemiluminescence, Barometric light, Thermoluminescence dating, Zinc sulfide, Kasha's rule, EFluor Nanocrystal, Thick-film dielectric electroluminescent technology, Activator, (E)-Stilbene, Negative luminescence, Peroxyoxalate, Chloro-5-substituted adamantyl-1,2-dioxetane phosphate, Electrochemiluminescence, EL Wire Sequencers, Strontium aluminate, (Z)-Stilbene, Photoluminescence excitation, Electroluminescent wire, Radioluminescence, Radium dials, Lyoluminescence, Super-LumiNova, Undark, Persistent luminescence, Lume, Advanced Microscopy Group, IAEDANS, Luminophore, Anode ray, Electroluminescent display, Illuminator, Indiglo, Light emitting capacitor, Candoluminescence, Mechanoluminescence, Crystalloluminescence, Galvanoluminescence. Excerpt: A phosphor, most generally, is a substance that exhibits the phenomenon of luminescence. Somewhat confusingly, this includes both phosphorescent materials, which show a slow decay in brightness (1ms), and fluorescent materials, where the emission decay takes place over tens of nanoseconds. Phosphorescent materials are known for their use in radar screens and glow-in-the-dark toys, whereas fluorescent materials are common in CRT and plasma video display screens, sensors, and white LEDs. Phosphors are transition metal compounds or rare earth compounds of various types. The most common uses of phosphors are in CRT displays and fluorescent lights. CRT phosphors were standardized beginning around World War II and designated by the letter 'P' followed by a number. Phosphorus, the chemical element named for its light-emitting behavior, emits light due to chemiluminescence, not phosphorescence. A material can emit light either through incandescence, where all atoms radiate, or by luminescence, where only a small fraction of atoms, called emission centers or luminescence centers, emit light. In inorganic phosphors, these inhomogeneities in the crystal structure are created usually by addition of a trace amount of dopants, impurities called activators. (In rare cases dislocations or other crystal defects can play the role of the impurity.) The wavelength emitted by the emission center is dependent on the atom itself, and on the surrounding crystal structure. The scintillation process in inorganic materials is due to the electronic band structure found in the crystals. An incoming particle can excite an electron from the valence band to either the conduction band or the exciton band (located just below the conduction band and separated from the valence band by an energy gap). This leaves an associated hole behind, in the valence band. Impurities create electronic levels in the forbidden gap. The excitons are loosely bound electron-hole pairs that wander through the crystal 48 pp. Englisch. Codice articolo 9781157718451
Quantità: 2 disponibili
Immagini fornite dal venditore
Luminescence
Editore:
Books LLC, Reference Series Nov 2012, 2012
ISBN 10: 1157718450
ISBN 13: 9781157718451
Nuovo
Taschenbuch
Da: buchversandmimpf2000, Emtmannsberg, BAYE, Germania
Valutazione del venditore 5 su 5 stelle
Taschenbuch. Condizione: Neu. Neuware -Source: Wikipedia. Pages: 48. Chapters: Fluorescence, Triboluminescence, Sonoluminescence, Optical brightener, Electroluminescence, Cathodoluminescence, Photoluminescence, Phosphor, Phosphorescence, Incandescence, Photoelectrochemical processes, Black light, Glow stick, Fluorophore, Chemiluminescence, Barometric light, Thermoluminescence dating, Zinc sulfide, Kasha's rule, EFluor Nanocrystal, Thick-film dielectric electroluminescent technology, Activator, (E)-Stilbene, Negative luminescence, Peroxyoxalate, Chloro-5-substituted adamantyl-1,2-dioxetane phosphate, Electrochemiluminescence, EL Wire Sequencers, Strontium aluminate, (Z)-Stilbene, Photoluminescence excitation, Electroluminescent wire, Radioluminescence, Radium dials, Lyoluminescence, Super-LumiNova, Undark, Persistent luminescence, Lume, Advanced Microscopy Group, IAEDANS, Luminophore, Anode ray, Electroluminescent display, Illuminator, Indiglo, Light emitting capacitor, Candoluminescence, Mechanoluminescence, Crystalloluminescence, Galvanoluminescence. Excerpt: A phosphor, most generally, is a substance that exhibits the phenomenon of luminescence. Somewhat confusingly, this includes both phosphorescent materials, which show a slow decay in brightness (>1ms), and fluorescent materials, where the emission decay takes place over tens of nanoseconds. Phosphorescent materials are known for their use in radar screens and glow-in-the-dark toys, whereas fluorescent materials are common in CRT and plasma video display screens, sensors, and white LEDs. Phosphors are transition metal compounds or rare earth compounds of various types. The most common uses of phosphors are in CRT displays and fluorescent lights. CRT phosphors were standardized beginning around World War II and designated by the letter 'P' followed by a number. Phosphorus, the chemical element named for its light-emitting behavior, emits light due to chemiluminescence, not phosphorescence. A material can emit light either through incandescence, where all atoms radiate, or by luminescence, where only a small fraction of atoms, called emission centers or luminescence centers, emit light. In inorganic phosphors, these inhomogeneities in the crystal structure are created usually by addition of a trace amount of dopants, impurities called activators. (In rare cases dislocations or other crystal defects can play the role of the impurity.) The wavelength emitted by the emission center is dependent on the atom itself, and on the surrounding crystal structure. The scintillation process in inorganic materials is due to the electronic band structure found in the crystals. An incoming particle can excite an electron from the valence band to either the conduction band or the exciton band (located just below the conduction band and separated from the valence band by an energy gap). This leaves an associated hole behind, in the valence band. Impurities create electronic levels in the forbidden gap. The excitons are loosely bound electron-hole pairs that wander through the crystalBooks on Demand GmbH, Überseering 33, 22297 Hamburg 48 pp. Englisch. Codice articolo 9781157718451
Quantità: 2 disponibili