The current-voltage (I-V) curve for a PV cell shows that the current is essentially constant over a range of output voltages for a specified amount of incident light energy. Figure 1: Typical I-V Characteristic Curve for a PV Cell Figure 1 shows a typical I-V curve for which the short-circuit output current, ISC is 2 A.. .
The output power of the PV cell is voltage times current, so there is no output power for a short-circuit condition because of VOUT or for an open-circuit condition because of IOUT= 0.. .
The efficiencyof a PV cell is the ratio of light energy falling on the cell to the light energy that is converted into electrical energy. It is expressed as a percentage, as shown in the following. .
The fill factor of a PV cell is an important parameter in evaluating its performance because it provides a measure of how close a PV cell comes to. .
Several factors determine the efficiency of a PV cell: the type of cell, the reflectance efficiency of the cell’s surface, the thermodynamic efficiency.
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