Organic-inorganic multilayers: A new concept of optoelectronic material

Abstract

By utilizing copper phthalocyanine (CuPc) and TiOx, we report the fabrication of organic-inorganic heteromultilayer structures as a new concept of optoelectronic material. These are based on an anticipated model where charge carrier photogeneration occurs in the CuPc layers, while the TiOx layers have the role of transportation of electrons in-plane after charge separation at the interfaces. Atomic force microscopy has confirmed the formation of layered structures for samples with an artificial period of more than 50 Å. The multilayers are found to exhibit 40 times higher photoconductivity than a CuPc single layer.