ITO Modification for Efficient Inverted Organic Solar Cells

Diana K. Susarova, Alexander V. Akkuratov, Andrey I. Kukharenko, Seif O. Cholakh, Ernst Z. Kurmaev, Pavel A. Troshin

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We demonstrate a facile approach to designing transparent electron-collecting electrodes by depositing thin layers of medium and low work function metals on top of transparent conductive metal oxides (TCOs) such as ITO and FTO. The modified electrodes were fairly stable for months under ambient conditions and maintained their electrical characteristics. XPS spectroscopy data strongly suggested integration of the deposited metal in the TCO structure resulting in additional doping of the conducting oxide at the interface. Kelvin probe microscopy measurements revealed a significant decrease in the ITO work function after modification. Organic solar cells based on three different conjugated polymers have demonstrated state of the art performances in inverted device geometry using Mg- or Yb-modified ITO as electron collecting electrode. The simplicity of the proposed approach and the excellent ambient stability of the modified ITO electrodes allows one to expect their wide utilization in research laboratories and electronic industry.

Original languageEnglish
Pages (from-to)10118-10124
Number of pages7
JournalLangmuir
Volume33
Issue number39
DOIs
Publication statusPublished - 3 Oct 2017

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