Capacitance-voltage property of composite microsphere monolayer with polymer/Fe2O3/polymer structure

Inorganic nanoparticles Fe2O3 3-5 nm in diameter were assembled on the surf ace of polymer microspheres and then encapsulated in the polymer to form a trilayer composite structure. The capacitance-voltage (C-TI) curve of the c omposite microsphere monolayer shows the presence of a plateau. The electro n transportation process in the special structure was investigated combinin g with the energy band model. The results show that Fe2O3 layer acts as a c harge trap between polymer layers which are regarded as potential barriers. (C) 1998 Elsevier Science Limited. All rights reserved.