Photo-enhanced conduction in inhomogeneous thin film space chargé limited conducting systems

Abstract

Photo-enhancement of space-charge limited currents in deliberately modified thin-film s ructures is studied using numerical methods. The obtained results suggest that it should be possible to obtain optically induced increase in current density of the order of 10^7 in modified thin film structures as a result of deliberate modification of trap density at the emitter consisting in formation of high density of traps at the emitter.