Disclosed is a polycrystalline-type silicon solar cell which can be produced at low cost by forming a polycrystalline silicon film having a PN junction in a simple manner. Specifically, an amorphous silicon film produced by sputtering using a dopant-containing silicon target is polycrystallized with plasma, and a PN junction is formed in the amorphous silicon film, thereby producing a polycrystalline silicon film having a PN junction. The polycrystalline silicon film having a PN junction is used as a silicon substrate for a polycrystalline-type silicon solar cell. Also disclosed is a technique for producing a dopant-containing silicon target from a silicon ingot.