ZnS: CuCl粉末螢光体の微視的EL特性

抄録

There have been many investigations on electroluminescent properties of ZnS type phosphors but very few for single phosphor particles and their emission source. The study of the light-emitting source in the particle provides valuable informations to explain the mechanism of electroluminescence.
This paper is a microscopical study of ZnS: Cu, Cl phosphors.
The emission is classified into four types: comparatively uniform, spot-like and line-like' emissions, and emission at the contact area.
The voltage dependency of electroluminescent brightness of the light-emitting source in particles follows the equation
B=B₀exp(-c/√r).
The emission characteristics at the region of contact between particles, in particular as referable to the wave forms obtained by superposing pulses on sinusoidal voltage waves, are discussed.