Compound semiconductor solar cell and method of manufacturing the same

A method for fabricating a compound semiconductor solar cell, comprising:

• forming a first mask layer on a front surface of a compound semiconductor layer of a second region which is a region other than a first region where a front electrode is to be formed;
• forming a seed metal layer having a first width on the front surface of the compound semiconductor layer of the first region and on the first mask layer of the second region;
• removing the seed metal layer over the first mask layer and the first mask layer;
• removing a part of the compound semiconductor layer of the second region from the front surface of the compound semiconductor layer by using the seed metal layer of the first region as a mask;
• forming a second mask layer on the compound semiconductor layer of the second region and on both top surface edges of the seed metal layer in a width direction of the seed metal layer;
• forming an electrode metal layer having a second width less than the first width on the seed metal layer not covered by the second mask layer;
• and
• removing the second mask layer.