Controlling surface enrichment in polymeric hole extraction layers to achieve high-efficiency organic photovoltaic cells

Dong Hun Kim, Kyung Geun Lim, Jong Hyeok Park, Tae Woo Lee

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Hole extraction in organic photovoltaic cells (OPVs) can be modulated by a surface-enriched layer formed on top of the conducting polymer-based hole extraction layer (HEL). This tunes the surface work function of the HEL to better align with the ionization potential of the polymeric photoactive layer. Results show noticeable improvement in device power conversion efficiencies (PCEs) in OPVs. We achieved a 6.1 % PCE from the OPV by optimizing the surface-enriched layer. Top job: Hole extraction in organic photovoltaic cells (OPVs) is modulated by a surface-enriched layer formed on top of the conducting polymer-based hole extraction layer (HEL). This tunes the surface work function of the HEL to better align with the ionization potential of the polymeric photoactive layer. Herein, we show a noticeable improvement in device power conversion efficiencies (PCEs) based on rational pretreatment.

Original languageEnglish
Pages (from-to)2053-2057
Number of pages5
JournalChemSusChem
Volume5
Issue number10
DOIs
Publication statusPublished - 2012 Oct

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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