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Organic thin-film photoelectric conversion element and method of manufacturing the same

外国特許コード F130007479
整理番号 1079
掲載日 2013年7月10日
出願国 アメリカ合衆国
出願番号 99136506
公報番号 20090151787
公報番号 08012530
出願日 平成18年9月6日(2006.9.6)
公報発行日 平成21年6月18日(2009.6.18)
公報発行日 平成23年9月6日(2011.9.6)
国際出願番号 WO2006JP317673
国際出願日 平成18年9月6日(2006.9.6)
優先権データ
  • 特願2005-258527 (2005.9.6) JP
  • 特願2006-066674 (2006.3.10) JP
発明の名称 (英語) Organic thin-film photoelectric conversion element and method of manufacturing the same
発明の概要(英語)

The objectives of the present invention are to enable the manufacturing of an organic thin-film photoelectric conversion element under normal atmosphere, improve the photoelectric conversion efficiency of the element, and enhance its durability. A hole-blocking TiO2 layer is created between the photoelectric conversion layer and the electrode by a wet process. In the manufacturing process, the hole-blocking TiO2 layer is air-dried so that it will be an amorphous layer. It is possible to provide a concentration gradient layer of PCBM/P3HT in which the PCBM concentration is higher in a region close to the hole-blocking TiO2 layer. This structure will reduce the electric resistance of that region and minimize the current loss within the photoelectric conversion element.

In the vicinity of the hole-blocking TiO2 layer, the PCBM concentration is increased, which in turn makes it easier for electrons to flow into the TiO2 layer since PCBM is electrically conductive. Due to these features, the organic thin-film photoelectric conversion element having the gradient structure of the present embodiment has a high level of photoelectric conversion efficiency and good durability.

  • 発明者/出願人(英語)
  • YOSHIKAWA SUSUMU
  • UEHARA KAKU
  • HAYAKAWA AKINOBU
  • KYOTO UNIVERSITY
国際特許分類(IPC)
米国特許分類/主・副
  • 136/261
  • 136/263
  • 257/E51.026
  • 427/74
  • 427/350
  • 438/82
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