PV effect of fullerene/poly(3-hexylthiophene) blend sensitized by phthalocyanine having infrared absorption CT band

I. Kaulachs, I. Muzikante, L. Gerca, G. Shlihta, M. Plotniece, M. Roze, J. Kalnachs, A. Murashov, P. Shipkovs, G. Kashkarova, V. Kampars, V. Parra

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


An attempt was made to extend the photosensitivity spectral range of fullerene/poly(3-hexylthiophene) blend to NIR region by adding extra electron donor - hydroxygallium phthalocyanine (GaOHPc) with a strong and wide intermolecular charge transfer (CT) band around 830 nm. Multilayer cells of ITO/PEDOT: PSS/6 GaOHPc/P3HT: C61(CO2Et)2 have been prepared by spin coating with vacuum evaporated Al or In top electrodes. Significant photosensitivity of the cells was in 370-900 nm spectral range. However charge carrier photogeneration efficiency was 3 times higher for illumination in P3HT absorption band as compared with the GaOHPc CT band at 830 nm. But when GaOHPc was mixed in the blend forming P3HT:C61(CO 2Et)2:GaOHPc active layer its CT band shifted to infrared part at 875 nm. At the same time the charge carrier photogeneration efficiency for illumination in GaOHPc CT band increased significantly, exceeding its value for illumination in P3HT absorption band.

Original languageEnglish
Title of host publicationProceedings of ISES World Congress 2007
Subtitle of host publicationSolar Energy and Human Settlement
EditorsD.Y. Goswami, Y. Zhao
Number of pages5
ISBN (Print)9781622765447
Publication statusPublished - 2007
Externally publishedYes
EventInternational Solar Energy Society Solar (ISES) World Congress: Solar Energy and Human Settlement - Beijing, China
Duration: 18 Sept 200721 Sept 2007


CongressInternational Solar Energy Society Solar (ISES) World Congress
Abbreviated titleISES 2007
Other ISES World Congress 2007
Internet address

Field of Science*

  • 1.3 Physical sciences

Publication Type*

  • 3.1. Articles or chapters in proceedings/scientific books indexed in Web of Science and/or Scopus database


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