Photoluminescence Of ZnS Research Articles

Quenching of photoluminescence of ZnS - Cu phosphor by an electric field

Quenching of photoluminescence of ZnS - Cu phosphor by an electric field

Quenching of the photoluminescence of ZnS ? Mn under the influence of an electric field

Quenching of the photoluminescence of ZnS ? Mn under the influence of an electric field

Polarization of photo-luminescence of ZnS: Cu monocrystals

Different models of luminescence centres are discussed on the basis of measurements of the composition of ZnS monocrystal photo-luminescence in different polarizations and temperature dependence of the degree of polarization. Those of the models submitted by Birman, which assume the polarization to be due to the different force of the oscillators for transitions withE⊥c andE∥c, or models assuming luminescence polarization to be due to the orientation of the luminescence centres, agree with the results of experiments, i.e. the temperature independence of the degree of polarization and the conformable spectral composition of both polarizations. It is also shown that measurements made up to now of the degree of polarization must be taken as orientational as a consequence of the depolarizing influence of the diffused rays of luminescence on its value.