Photovoltaic cells of fullerene / poly-phenylenevinylene derivative prepared by spray deposition

T. Ishikawa, M. Nakamura, K. Fujita, T. Tsutsui

Research output: Contribution to journalConference articlepeer-review

Abstract

The spray deposition method1) has been developed as a new way of polymer ultra-thin film preparation for organic optoelectronic devices such as an organic photovoltaic cell (OPC). In this method, a highly diluted solution of an organic material is nebulized into air and concentrated under a controlled evaporation condition. The resulting aerosol is transported by a carrier gas and deposited onto a solid substrate. This method has substantial advantages that an almost insoluble and non-evaporative material can be fabricated into a thin film, and that a separate area coating and layer-by-layer structure of polymer materials can be preformed. An OPC was prepared from highly diluted THF solutions (below 1 ppm) of fullerene / poly-phenylenevinylene (PPV) derivative mixture. The device configulation, ITO / PEDOT-PSS / fullerene-PPV / LiF / Al, is known as a bulk hetero-junction PC. By control of temperature, we obtained homogeneous active layer by spray deposition. In addition, we can achieve power conversion efficiency of 0.63% using the active layer consist of fullerene: PPV(1:1). This method has significant potential to provide a structural control of the active layer and to reduce the cost of the OPCs drastically in spite that the power conversion efficiency is slightly lower than a PC prepared in same ratio by spin-coating.

Original languageEnglish
Pages (from-to)211-218
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5215
DOIs
Publication statusPublished - 2004
EventOrganic Photovoltaics IV - San Diego, CA, United States
Duration: Aug 7 2003Aug 8 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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