A new method for determining the series resistance of a solar cell from illuminated

measurements is presented. The method, based on the computation of the area

, under the

curve, evaluates R
susing the equation
![R_{s} = 2[V_{oc}/I_{sc} - A/_sc^2 - (mkT/q) (1/I_{sc})]](/images/tex/15177.gif)
This technique takes advantage of the special feature of integration as a procedure to smooth data errors. The R
sobtained represents the resistive effects globally.