| abstract |
A composition for forming an impurity diffusion layer contains a glass powder containing a donor element or an acceptor element, and a dispersion medium, in which the content ratio of the glass powder is from 1% by mass to 90% by mass. When the impurity diffusion layer is an n-type diffusion layer, the glass powder contains a donor element. When the impurity diffusion layer is a p-type diffusion layer, the glass powder contains an acceptor element. An n-type diffusion layer or a p-type diffusion layer, and a photovoltaic cell having an n-type diffusion layer or a p-type diffusion layer are prepared by a coating of the composition for forming an impurity diffusion layer, followed by a thermal diffusion treatment. |