Integrating nanostructured electrodes in organic photovoltaic devices for enhancing near-infrared photoresponse

Alexandre M. Nardes, Sungmo Ahn, Devin Rourke, Chenchen Mao, Jao van de Lagemaat, Andrew J. Ferguson*, Wounjhang Park, Nikos Kopidakis

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We introduce a simple methodology to integrate prefabricated nanostructured-electrodes in solution-processed organic photovoltaic (OPV) devices. The tailored “photonic electrode” nanostructure is used for light management in the device and for hole collection. This approach opens up new possibilities for designing photonically active structures that can enhance the absorption of sub-bandgap photons in the active layer. We discuss the design, fabrication and characterization of photonic electrodes, and the methodology for integrating them to OPV devices using a simple lamination technique. We demonstrate theoretically and experimentally that OPV devices using photonic electrodes show a factor of ca. 5 enhancement in external quantum efficiency (EQE) in the near infrared region. We use simulations to trace this observed efficiency enhancement to surface plasmon polariton modes in the nanostructure.

Original languageEnglish
Pages (from-to)59-63
Number of pages5
JournalOrganic Electronics
Volume39
DOIs
Publication statusPublished - 1 Dec 2016

Keywords

  • Nanostructured electrodes
  • Organic photovoltaics
  • Photonic electrodes
  • Plasmons
  • Surface plasmon polaritons

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