Photovoltaic properties of a sandwich cell consisting of bromophosphorus phthalocyanine and titanium dioxide layers

The photovoltaic properties of sandwich structures formed from TiO2 films prepared on ITO coated glass substrates using a spin coating technique and vapour-deposited layers of bromophosphorus phthalocyanine, tetracene and Au electrode (ITO/TiO2/PBrPc/Tc/Au) were investigated. The system exhibits a strong rectification effect in the dark, while illumination through the ITO leads to a noticeable photovoltaic effect connected with exciton dissociation within the TiO2/PBrPc heterojunction.