Abstract
Multiplication of electronic excitations caused by hot photoelectrons has been examined for luminescent materials on the basis of metal halides and oxides. The results of the elaboration of luminophors with a quantum yield greater than one on the excitation by Ne (16.7 eV) or He (21.2 eV) gas discharge line sources, obtained by physicists and chemists of the Institute of Physics (Tartu, Estonia), have been generalized. The possibility to reduce the near-surface energy losses by using materials with self-trapping excitons (Y<SUB>2</SUB>O<SUB>3</SUB>, Zn<SUB>2</SUB>SiO<SUB>4</SUB>, etc.) in gas discharge devices has been revealed.
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