Schottky junction solar cell

Schottky barrier solar cell

In a basic Schottky-junction (Schottky-barrier) solar cell, an interface between a metal and a semiconductor provides the band bending necessary for charge separation. Traditional solar cells are composed of p-type and n-type semiconductor layers sandwiched together, forming the source of built-in voltage. Due to differing energy levels between the Fermi level of the metal and the conduction band of the semiconductor, an abrupt potential difference is created, instead of the smooth band transition observed across a p-n junction in a standard solar cell, and this is a Schottky height barrier. Although vulnerable to higher rates of thermionic emission, manufacturing of Schottky barrier solar cells proves to be cost-effective and industrially scalable.

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