Carbon Nanotube Network Electrodes Enabling Efficient Organic Solar Cells Without a Hole Transport Layer

Teresa M. Barnes, Jeremy D. Bergeson, Robert C. Tenent, Brian A. Larsen, Glenn Teeter, Kim M. Jones, Jeffrey L. Blackburn, Jao Van De Lagemaat

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125 Scopus Citations

Abstract

We report on the effects of replacing both In2O3:Sn (ITO) and the hole transport layer (HTL) in organic photovoltaic (OPV) cells with single-walled carbon nanotube (SWNT) network transparent electrodes. We have produced an OPV device without an HTL exhibiting an NREL-certified efficiency of 2.65% and a short-circuit current density of 11.2 mA/cm 2. Our results demonstrate that SWNT networks can be used to replace both ITO and the HTL in efficient OPV devices and that the HTL serves distinctly different roles in ITO- and SWNT-based devices.

Original languageAmerican English
Article numberArticle No. 243309
Number of pages3
JournalApplied Physics Letters
Volume96
Issue number24
DOIs
StatePublished - 14 Jun 2010

NREL Publication Number

  • NREL/JA-520-47671

Keywords

  • BHJ
  • bulk heterojunction
  • carbon
  • hole transport layer
  • HTL
  • nanotube
  • organic
  • photovoltaic
  • PV
  • single walled

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