Title :
Space charge formation at the interface between a charge transport layer and a polyester film
Author :
Fukunaga, K. ; Maeno, T. ; Hashimoto, Y. ; Suzuki, K.
Author_Institution :
Commun. Res. Lab.
fDate :
4/1/1998 12:00:00 AM
Abstract :
The organic photoconductor structure used in a copying machine consists of electron-conductive and ion-conductive layers, a charge generation layer, and a charge transport layer. We applied the pulsed electroacoustic method, which has been used to evaluate HV insulation, to measure the space charge behavior of the charge transport layer coated on a polyester film. On the surface of the charge transport layer, various electrodes were evaporated. An internal space charge accumulated at the interface between the charge transport layer and the polyester film under a dc electric field. We show that the charge distribution is formed by the injection of holes from the anode and by the surface charge, and that the hole injection is influenced by the anode material
Keywords :
acoustoelectric effects; photoconducting materials; polymer films; space charge; DC electric field; anode; charge generation layer; charge transport layer; copying machine; electron conductive layer; evaporated electrode; hole injection; interfacial space charge; ion conductive layer; organic photoconductor; polyester film; pulsed electroacoustic method; surface charge; Charge measurement; Conductive films; Current measurement; Electrodes; Electrostatic measurements; Polymers; Positron emission tomography; Pulse measurements; Pulsed electroacoustic methods; Space charge;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on