A unit which generates a voltage related to the light intensity impinging on it.
Solar photovoltaic devices are made of various semiconductor materials including:
- cadmium sulfide
- cadmium telluride
- gallium arsenide
and they are made in different forms:
- single crystalline
- amorphous forms
The material that readily absorbs photons to generate charge carriers (either free electrons or holes).
The energy given up by an electron in penetrating the cell barrier; a measure of the electrostatic potential of the barrier.
Cell Barrier or Depletion Zone
A very thin region of static electric charge along the interface of the positive and negative layers in a photovoltaic cell.
The barrier inhibits the movement of electrons from one layer to the other, so that higher-energy electrons from one side diffuse preferentially through it in one direction, creating a current and thus a voltage across the cell.
The area of immediate contact between two layers (positive and negative) of a photovoltaic cell. The junction lies at the centre of the cell barrier or depletion zone.
Energy Contribution Potential
Recombination occurring in the emitter region of a photovoltaic cell.