Luminescent Materials |
Contents
GENERAL INTRODUCTION | 1 |
MECHANISMS OF LUMINESCENCE IN CRYS | 18 |
Absorption processes in crystalline phosphors 3 | 27 |
9 other sections not shown
Other editions - View all
Common terms and phrases
absorption and emission absorption bands alkali halides alkaline earth sulphide anthracene applied field assumed auxiliary activator B-process cadmium sulphide calcium cathode-ray tube cathodoluminescence cent Chapter characteristics Chem concentration conduction band copper current density curves of Fig decrease dielectric changes dielectric constant effect electron energy electron traps emission centres emission spectra equation excitation intensity experimental exponential Faraday Soc fluorescence Fonda give rise given in Fig impurity-activated increase Kröger long wave-length lumi luminescence centres luminescence efficiency manganese measurements molecules naphthacene nescence non-radiative occur phos phosphorescence phosphorescence decay photoconductivity Phys polarization potassium chloride quenching Randall and Wilkins retrapping room temperature samarium saturation screen secondary electrons secondary emission Seitz shown in Fig solids solution specimens spectrum stimulation Strange and Henderson structure studies thallium theoretical thermoluminescence curves tion transition trapped electrons tungstate ultra-violet values variation voltage willemite wurtzite zinc oxide zinc silicate phosphors zinc sulphide phosphors ZnS-Cu