On the cathodoluminescence of thin films

An analysis is given of the voltage dependence of the cathodoluminescence of thin luminescent films, taking into consideration the surface recombination and diffusion processes of induced carriers. In the analysis Young's laws were used for the dissipation and range of incident cathode rays. The smooth maximum of experimental voltage response curves can be explained by strong surface recombination on the support.The author wishes to express his sincere thanks to Mr. Gy. Katona for his help in the computations.