Roles of interlayers in efficient organic photovoltaic devices

Jong Hyeok Park, Tae Woo Lee, Byung Doo Chin, Dong Hwan Wang, O. Ok Park

Research output: Contribution to journalReview articlepeer-review

91 Citations (Scopus)


This review discusses interfacial layers in organic photovoltaic devices. The first part of the review focuses on the hole extraction layer, which is located between a positive electrode and an organic photoactive material. Strategies to improve hole extraction from the photoactive layer include incorporation of several different types of hole extraction layers, such as conductive polymeric materials, self-assembled molecules and metal oxides, as well as surface treatment of the positive electrodes and the conductive polymeric layers. In the second part, we review recent research on interlayers that are located between a negative electrode and a photoactive layer to efficiently extract electrons from the active layer. These materials include titanium oxides, metal fluorides and other organic layers. This review presents interfacial layers used in organic photovoltaic devices (OPVs) to improve their power conversion efficiency and long term stability. We summarize the recent progress obtained by including interlayers in OPVs, with regard to interfacial layers for efficient hole extraction or efficient electron extraction, as well as efficient hole or electron extraction via nano-patterned structures, in OPVs.

Original languageEnglish
Pages (from-to)2095-2108
Number of pages14
JournalMacromolecular rapid communications
Issue number24
Publication statusPublished - 2010 Dec 15

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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