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Proceedings Paper

Photovoltaic cells of fullerene/poly-phenylenevinylene derivative prepared by spray deposition
Author(s): Takamasa Ishikawa; Makiko Nakamura; Katsuhiko Fujita; Tetsuo Tsutsui
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Paper Abstract

The spray deposition method 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 performed. An OPC was prepared from highly diluted THF solutions (below 1 ppm) of fullerene/ poly-phenylenevinylene (PPV) derivative mixture. The device configuration, 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.

Paper Details

Date Published: 6 February 2004
PDF: 8 pages
Proc. SPIE 5215, Organic Photovoltaics IV, (6 February 2004); doi: 10.1117/12.505671
Show Author Affiliations
Takamasa Ishikawa, Kyushu Univ. (Japan)
Makiko Nakamura, Kyushu Univ. (Japan)
Katsuhiko Fujita, Kyushu Univ. (Japan)
Tetsuo Tsutsui, Kyushu Univ. (Japan)

Published in SPIE Proceedings Vol. 5215:
Organic Photovoltaics IV
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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