Open Photovoltaics Analysis Platform Free for Research
(default 1, unit: cm^2)
(default 100, unit: mW/cm^2)
Please copy your two columns Voltage-Current data below
Attention: the default units of two columns are (V, mA) and NO title be included such as (voltage current) at the top of columns. (Example of data download)
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Here are several methods to caculate Rs, Rsh, n, j0 and Jph
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Current–Voltage characteristic (I-V curve) is a relationship, typically represented as a chart or graph, between an electric current and a corresponding voltage, or potential difference. Sometimes, I is replaced by J, namely J-V curvre, which J is current density = I/A, where A is area.
Scientists use these charts to determine basic parameters of a device and to model its behavior in an electrical circuit.
A more general form of current–voltage characteristic is one that describes the dependence of a terminal current on more than one terminal voltage difference. Figure 1 shows an I–V curve for a P-N junction diode.
The equivalent circuit of solar cell is based on it but includes more units, such as a current supply, a serial resistance, and parrallel (shunt) resistance. (reference )
. The standard I-V curve of solar cell is shown in Figure 2.
Figure 1. I–V curve of a P–N junction diode (not to scale).
Figure 2 Effect of temperature on the current-voltage characteristics of a solar cell
The methods of Extracting parameters are shown in another page