Organic photovoltaic cells with nano-fabric heterojunction structure

Park J. H., Carter A. R., Mier L. M., Kao C., Lewis S. A. M., Nandyala R. P., ...Daha Fazla

APPLIED PHYSICS LETTERS, cilt.100, sa.7, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 100 Sayı: 7
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1063/1.3679097
  • Dergi Adı: APPLIED PHYSICS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

Organic photovoltaic cells containing electron-transporting organic nanofibers in the form of "nanofabrics" are investigated. Nano-fabric heterojunctions of poly(3-hexylthiophene) and electron-transporting nanofibers significantly improve short-circuit current density in organic photovoltaic cells. The nanofibers and nanofabric are synthesized from organic electron-transporting material bis(octyl)-perylenediimide (PDI-C-8). The PDI-C-8 based nano-fabric's electron mobility is measured to be 0.08 cm(2)/Vs. The nanofabric improves charge collection by expanding the interfacial acceptor-donor area while simultaneously providing dedicated electron transport pathways to the LiF/Al electrodes. An increase in fill factor is observed for photovoltaic cells incorporating the nanofabric heterojunctions and is attributed to efficient removal of space charge. (C) 2012 American Institute of Physics. [doi:10.1063/1.3679097]