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Title:
ORGANIC THIN FILM PHOTOELECTRIC CONVERTER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2007/029750
Kind Code:
A1
Abstract:
This invention aims to manufacture an organic thin film photoelectric converter in the atmosphere while improving the photoelectric conversion efficiency and durability of the photoelectric converter. A TiO2 hole blocking layer formed by a wet method is provided between a photoelectric conversion layer and an electrode. During the formation of the TiO2 hole blocking layer, the TiO2 hole blocking layer is dried in the atmosphere, thereby being transformed into amorphous. In addition, a PCBM/P3HT concentration gradient layer wherein the PCBM concentration is increased near the TiO2 hole blocking layer may be arranged between a PCBM/P3HT layer and the TiO2 hole blocking layer. Consequently, the electric resistance in the region is reduced, thereby suppressing current loss of the photoelectric converter to the minimum. Since the concentration of PCBM, which is a conductive material, is high near the TiO2 hole blocking layer, electrons are likely to flow into the TiO2 hole blocking layer. Consequently, this organic thin film photoelectric converter of gradient structure has high photoelectric conversion efficiency and high durability.

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Inventors:
YOSHIKAWA SUSUMU (JP)
UEHARA KAKU (JP)
HAYAKAWA AKINOBU (JP)
Application Number:
PCT/JP2006/317673
Publication Date:
March 15, 2007
Filing Date:
September 06, 2006
Export Citation:
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Assignee:
UNIV KYOTO (JP)
YOSHIKAWA SUSUMU (JP)
UEHARA KAKU (JP)
HAYAKAWA AKINOBU (JP)
International Classes:
H01L51/42
Foreign References:
JP2003123856A2003-04-25
JPH08217577A1996-08-27
JP2004273423A2004-09-30
JP2005235794A2005-09-02
JP2005032793A2005-02-03
JP2005526404A2005-09-02
JP2005158972A2005-06-16
Other References:
YAMAGATA N. ET AL.: "Hin'yobai o Mochiita Yuki Usumaku Taiyo Denchi no Koden Henkan Koritsu no Josho", DAI 53 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU, vol. 3, pages 1334, 23A-S-7, XP003010111
Attorney, Agent or Firm:
KOBAYASI, Ryohei (7th Floor Hougen-Sizyokarasuma Building, 37, Motoakuozi-tyo, Higasinotouin Sizyo-sagaru, Simogyo-k, Kyoto-si Kyoto 91, JP)
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