Photoconducive and photodielectric properties of heterostructures composed of poly-<Emphasis Type="Italic">N</Emphasis>-epoxypropylcarbazole and MEH-PPV films with a zinc octabutylphthalocyanine additive |
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| Authors: | N A Davidenko S V Dekhtyarenko A V Kozinets A S Lobach E V Mokrinskaya V A Skryshevsky N G Spitsyna S L Studzinsky O V Tretyak L S Tonkopieva |
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| Institution: | 1.Shevchenko National University,Kiev,Ukraine;2.Institute of Problems of Chemical Physics,Russian Academy of Sciences,Chernogolovka, Moscow oblast,Russia |
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| Abstract: | The subject of investigation is poly-N-epoxypropylcarbazole and poly2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene-vinylene] films with zinc 2,3,9,10,16,17,23,24-octabutylphthalocyanine
additives. The photoconducive and photodielectric properties of these heterostructures are studied in the absorption range
of the metal complex. The photosensitivity of the structures depends on the triplet state of photogenerated electron-hole
pairs, their dissociation in an external electric field, and charge carrier trapping. The increased photosensitivity of the
heterostructures compared with that of constituent films is explained by a higher efficiency of dissociation of the photogenerated
electron-hole pairs and a reduced influence of non-equilibrium carrier traps at the interfaces. |
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