Electronic Transport in Insulating Films

This paper gives a brief review of various electronic transport processes in insulating films. The topics include a brief consideration of energy bands and the concepts of extended and localized states; the properties of traps with emphasis on Shockley-Reed theory; the space-charge limitation of currents for one-carrier injection; the bulk trap limitation of currents including hopping conduction, the Poole-Frenkel effect, and field emission from traps; and ionic conduction.