The open-circuit voltage is 1.4 volts, dropping to 1.2 volts during discharge.

Adding aluminium to the top cell increases its band gap to 1.96 eV, covering a larger part of the solar spectrum and obtain a higher open-circuit voltage "V".

The open-circuit voltages of batteries and solar cells are often quoted under particular conditions (state-of-charge, illumination, temperature, etc.).

The terminal voltage of a cell that is neither charging nor discharging is called the open-circuit voltage and equals the emf of the cell.

A small cell has less capacity than a larger cell with the same chemistry, and they develop the same open-circuit voltage.

Rearrangement of the I-V equation provides the open-circuit voltage as:

Typically, the open-circuit voltage is not more than about 0.5 V.

The nominal output voltage is always less than the open-circuit voltage produced when the battery is "charged".

Use of protocrystalline silicon for the intrinsic layer has shown to optimize the open-circuit voltage of an a-Si photovoltaic cell.

The open-circuit voltage is 1.55 V, the average voltage during discharge is 1.25 V.