Title:
DIFFUSION AGENT COMPOSITION, METHOD OF FORMING IMPURITY DIFFUSION LAYER, AND SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2011/024408
Kind Code:
A1
Abstract:
Disclosed is a diffusion agent composition that includes: an impurity diffusion component (A); a binder resin (B), which thermally decomposes and disappears at a temperature lower than the temperature at which the impurity diffusion component (A) begins to thermally diffuse; SiO2 micro-particles (C); and an organic solvent (D), which contains an organic solvent (D1) having a boiling point of 100°C or greater. Also disclosed is a method for forming an impurity diffusion layer. The method includes a pattern formation step whereby a pattern is formed by printing the aforementioned diffusion agent composition onto a semi-conductor substrate, and a diffusion step whereby the impurity diffusion component (A) in the diffusion agent composition is diffused onto the semi-conductor substrate. Further disclosed is a solar cell, provided with a semi-conductor substrate whereon an impurity diffusion layer has been formed by means of the above mentioned impurity diffusion layer formation method.
Inventors:
HIRAI TAKAAKI (JP)
MUROTA ATSUSHI (JP)
TANITSU KATSUYA (JP)
MUROTA ATSUSHI (JP)
TANITSU KATSUYA (JP)
Application Number:
PCT/JP2010/005093
Publication Date:
March 03, 2011
Filing Date:
August 18, 2010
Export Citation:
Assignee:
TOKYO OHKA KOGYO CO LTD (JP)
HIRAI TAKAAKI (JP)
MUROTA ATSUSHI (JP)
TANITSU KATSUYA (JP)
HIRAI TAKAAKI (JP)
MUROTA ATSUSHI (JP)
TANITSU KATSUYA (JP)
International Classes:
H01L21/225; H01L31/04
Foreign References:
| JP2005347306A | 2005-12-15 | |||
| JP2007053353A | 2007-03-01 | |||
| JP2003209271A | 2003-07-25 | |||
| JPH07130675A | 1995-05-19 | |||
| JP2010056465A | 2010-03-11 |
Other References:
See also references of EP 2472569A4
Attorney, Agent or Firm:
MORISHITA, SAKAKI (JP)
Sakaki Morishita (JP)
Sakaki Morishita (JP)
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