Ambient method for the production of an ionically gated carbon nanotube common cathode in tandem organic solar cells

Alexander B. Cook, Jonathan D. Yuen, Joseph W. Micheli, Albert G. Nasibulin, Anvar Zakhidov

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A method of fabricating organic photovoltaic (OPV) tandems that requires no vacuum processing is presented. These devices are comprised of two solution-processed polymeric cells connected in parallel by a transparent carbon nanotubes (CNT) interlayer. This structure includes improvements in fabrication techniques for tandem OPV devices. First the need for ambient-processed cathodes is considered. The CNT anode in the tandem device is tuned via ionic gating to become a common cathode. Ionic gating employs electric double layer charging to lower the work function of the CNT electrode. Secondly, the difficulty of sequentially stacking tandem layers by solution-processing is addressed. The devices are fabricated via solution and dry-lamination in ambient conditions with parallel processing steps. The method of fabricating the individual polymeric cells, the steps needed to laminate them together with a common CNT cathode, and then provide some representative results are described. These results demonstrate ionic gating of the CNT electrode to create a common cathode and addition of current and efficiency as a result of the lamination procedure.

Original languageEnglish
JournalJournal of Visualized Experiments
Issue number93
DOIs
Publication statusPublished - 5 Nov 2014
Externally publishedYes

Keywords

  • Ambient Processing
  • Carbon Nanotubes
  • Conjugated Polymers
  • Ionic Liquid
  • Issue 93
  • Organic Photovoltaic
  • Physics
  • Tandem Photovoltaic

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