Solar cell structure and fabrication method thereof

A solar cell structure includes a semiconductor substrate having a front surface and a back surface; a pyramid structure disposed on the front surface of the semiconductor substrate; a front passivation layer on the pyramid structure; a first anti-reflection layer disposed on the front passivation layer; a front electrode provided on the first anti-reflection layer; a rear passivation layer provided on the back surface of the semiconductor substrate; a second anti-reflection layer disposed on the rear passivation layer; and a back electrode disposed on the second anti-reflection layer. The first reflective layer is a multi-layer anti-reflection layer having at least three layers of coatings.