| 摘要 |
Disclosed is a method for manufacturing a chalcopyrite thin-film solar cell wherein adhesion between an electrode layer and a light absorption layer composed of a chalcopyrite compound is good, and the multilayer structure is stable even when the concentration of an alkali metal-containing liquid constituting an alkali layer is relatively high and no problem is caused in appearance. This method comprises a first step wherein a precursor is formed by forming an In metal layer and a Cu-Ga alloy layer on an Mo electrode layer (2) by a sputtering process, a second step wherein an alkali metal-containing liquid is applied to the precursor, a selenization step wherein a substrate (1) which has gone through the first and second steps is selenized, and a transparent electrode forming step wherein a light-transmitting conductive layer is formed as a film. As the alkali metal-containing liquid, there is used an aqueous solution of an alkali metal compound such as sodium tetraborate, sodium sulfide or sodium aluminum sulfate. |
