D. Poelman et al., INFLUENCE OF THE GROWTH-CONDITIONS ON THE PROPERTIES OF CAS-EU ELECTROLUMINESCENT THIN-FILMS, Journal of luminescence, 75(2), 1997, pp. 175-181
A detailed study of the structural, compositional and optical properti
es of electron beam deposited CaS:Eu electroluminescent devices is pre
sented. Specific attention is paid to the influence of H2S addition -
applied for the first time - and Se coevaporation during the phosphor
film deposition. Upon addition of H2S or Se, the crystallinity of the
layers improves, the oxygen contamination decreases and the surface ro
ughness increases. Finally, the electroluminescent characteristics are
correlated with the results of the structural analysis.