NIR photoresponse in the mixed phthalocyanine films

The structure, optical and conducting properties of thin vacuum deposited films of erbium bisphthalocyanine (Pc₂Er) and its mixtures with metal-free phthalocyanine (H₂Pc) have been studied with particular reference to the near infrared (NIR). It has been found that, in spite of intense optical absorbance over the UV/Vis/NIR domain, pure Pc₂Er films are weakly photoconductive. However, in the mixed Pc₂Er/H₂Pc films the photocurrent signal was detected in the NIR range of 1200–1500 nm, which is associated with optical activity of Pc₂Er molecules. An erratum to this article is available at .