A solar cell including a photovoltaic layer, a first electrode layer, a second electrode layer, an insulating layer and a light-transparent conductive layer is provided. The photovoltaic layer has a first surface and a second surface. The first electrode layer having at least one gap is disposed on the first surface, wherein the at least one gap exposes a portion of the photovoltaic layer. The second electrode layer is disposed on the second surface. The insulating layer having a plurality of pores is located on the photovoltaic layer exposed by the at least one gap, wherein the holes expose a portion of the photovoltaic layer. The light-transparent conductive layer covers the insulating layer and is connected with the first electrode layer. The transparent electrode is connected with the photovoltaic layer through at least a part of the pores. A method of fabricating a solar cell is also provided.
1. A solar cell, comprising:
a photovoltaic layer, having a first surface and a second surface, wherein the first surface is a light incident surface;
a first electrode layer, disposed on the first surface of the photovoltaic layer, and having at least one gap, wherein the at least one gap exposes a portion of the photovoltaic layer;
a second electrode layer, disposed on the second surface of the photovoltaic layer;
an insulating layer, located on the photovoltaic layer exposed by the at least one gap, and having a plurality of pores, wherein the pores expose a portion of the photovoltaic layer; and
a light-transparent conductive layer, covering the insulating layer, connected to the first electrode layer, and directly connected to the photovoltaic layer through at least a part of the pores.
2. The solar cell as claimed in claim 1 , wherein the photovoltaic layer comprises a P-type semiconductor layer and an N-type semiconductor layer.
3. The solar cell as claimed in claim 1 , wherein materials of the first electrode layer and the second electrode layer comprise a metal material.
4. The solar cell as claimed in claim 1 , wherein a material of the insulating layer is a transparent material.
5. The solar cell as claimed in claim 4 , wherein a material of the insulating layer comprises silicon dioxide or silicon carbide.
6. The solar cell as claimed in claim 1 , wherein the pores have irregular shapes.
7. The solar cell as claimed in claim 6 , wherein diameters of the pores are between about 5 nm and about 50 nm.
8. The solar cell as claimed in claim 1 , wherein the pores are irregularly arranged.
9. The solar cell as claimed in claim 1 , wherein when a material of the light-transparent conductive layer is a metal material, a thickness of the light-transparent conductive layer is between about 5 nm and about 500 nm.
10. The solar cell as claimed in claim 9 , wherein the light-transparent conductive layer has a plurality of openings to expose a portion of the insulating layer.
11. The solar cell as claimed in claim 1 , wherein a material of the light-transparent conductive layer comprises transparent conductive oxide.
12. The solar cell as claimed in claim 1 , wherein the light-transparent conductive layer comprises a plurality of nano wires.