Emission Spectra of Crystal Phosphor BaCl 2 -Pb
1980; De Gruyter; Volume: 35; Issue: 3 Linguagem: Inglês
10.1515/zna-1980-0306
ISSN1865-7109
Autores Tópico(s)Solid-state spectroscopy and crystallography
ResumoAbstract Emission spectra of Pb 2+ centres in barium chloride single crystals have been studied between 4 and 300 K by excitation with different wave lengths. Excitation spectra at 300 K have also been obtained by measuring the emission in the maxima of the shoitwave and longwave bands. The results allow to conclude that the high energy emission band is due to the transition | 3 T1u > → | 1 A1g > in the activator ion. The more effective excitation of the low energy emission band observed in the shortwave region of the absorption spectrum and the complex nature of both bands are discussed.
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