Solar cell, multijunction solar cell, solar cell module, solar power generation system, and method for manufacturing solar cell

A method for manufacturing a solar cell, the solar cell comprising:

• a transparent first electrode;
• an n-type layer;
• a light absorption layer that contains an inorganic material;
• and
• a second electrode,
• the n-type layer being present between the first electrode and the light absorption layer, and the light absorption layer being present between the n-type layer and the second electrode,
• the first electrode having a gap penetrating the first electrode, and
• the n-type layer, the light absorption layer, and the second electrode each being partially included in the gap, and a part of the n-type layer, a part of the light absorption layer, and a part of the second electrode being arranged in this order in the gap,
• the method comprising:
• forming an oxide transparent conductive film on a transparent substrate;
• obtaining the first electrode by partially removing the oxide transparent conductive film;
• forming an n-type semiconductor film on the first electrode and the transparent substrate exposed through the gap;
• obtaining the n-type layer by removing a portion of the n-type semiconductor film in contact with a side surface of the first electrode located on one side of the gap and a part of a portion of the n-type semiconductor film in contact with an upper surface of the first electrode adjacent to the side surface;
• forming an inorganic material film on the n-type layer, on the transparent substrate exposed through the gap, and on the first electrode exposed;
• obtaining the light absorption layer by removing portions of the inorganic material film in contact with the side surface and the upper surface;
• and
• obtaining the second electrode by forming another conductive film on the light absorption layer, on the transparent substrate exposed through the gap, and on the first electrode exposed.