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2 Materials Science

2 2002

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Optical and photovoltaic properties of films and polymer composites based on near infra-red polymethine dyes

Ishchenko A., Derevyanko N., Piryatinskii Y. P., Verbitsky A., Filonenko D., Studzinsky S.

Materials Science

2002

Vol. 20, No. 4

5-12

Films and composites based on 1,3,3,1,3,3-hexamethylindotricarbocyanine tetrafluoroborate (HITC) polymethine dye have been investigated. Optical, photovoltaic and luminescent properties were studied under different conditions. It is shown that the composites under investigation are photosensitive in the near IR region close to the region of maximal solar spectral photon flux.

Effect of aggregation on optical and photovoltaic properties of an metallorganic compound

Derevyanko N., Ishchenko A., Verbitsky A.

Materials Science

2002

Vol. 20, No. 4

13-18

Optical and photovoltaic properties of an metallorganic compound - nickel(II)bis(dithiobenzil) (NBDB) in various states of aggregation (solution, vacuum-deposited film, polymer composite) have been studied. Its absorption spectra are explained by the formation of sandwich aggregates in deposited films, which are absynt in the solution and polymer composites. The study of photovoltage spectra showed that both deposited and composite films are photosensitive at the range of 500-1000 nm, and the quantum efficiency of the photogeneration for the direct excitation of aggregates is greater than that for the excitation of monomer molecules.