Title:
COMPOSITION, AND PHOTOELECTRIC CONVERTING ELEMENT USING IT
Document Type and Number:
Japanese Patent JP2009260324
Kind Code:
A
Abstract:
To provide a composition capable of suppressing defects caused by bubbles, when it is used for forming a large area organic film contained in an organic solar cell.
In this composition containing a conjugated polymer, a fullerene derivative, a first solvent, and a second solvent, the surface tension of the first solvent at 25C is larger than 25 mN/m, and the surface tension of the second solvent at 25C is preferably not more than 25 mN/m. The surface tension of the first solvent at 25C is larger than 25 mN/m and less than 60 mN/m. When the sum of the weight of the first solvent and the weight of the second solvent is set as 100, the weight of the first solvent is preferably 70-97, and more preferably 90-95.
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Inventors:
SEIKE TAKAHIRO
Application Number:
JP2009073717A
Publication Date:
November 05, 2009
Filing Date:
March 25, 2009
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
H01L51/42
Domestic Patent References:
| JP2004335737A | 2004-11-25 | |||
| JP2007335760A | 2007-12-27 | |||
| JP2004051780A | 2004-02-19 | |||
| JP2001323219A | 2001-11-22 | |||
| JP2005064122A | 2005-03-10 | |||
| JP2005303266A | 2005-10-27 | |||
| JPS62232974A | 1987-10-13 |
Foreign References:
| WO2004086462A2 | 2004-10-07 | |||
| WO2007029750A1 | 2007-03-15 | |||
| WO2007121252A2 | 2007-10-25 |
Attorney, Agent or Firm:
Toru Nakayama
Toru Sakamoto
Toru Sakamoto