DIFFUSION AGENT COMPOSITION, METHOD OF FORMING IMPURITY DIFFUSION LAYER, AND SOLAR CELL

摘要

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; SiO 2 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.