Ideal Solar Cell Electrical Parameters and Ideality Factor Effect on the Efficiency

The determination of the electrical conversion efficiency (ηC) is particularly important to evaluate performance a solar cell. For evaluation by considering ideal cell characterized an absence parasitic resistances and using characteristic equation which corresponds equivalent diagram, we determine parameters such as: saturation current density (J0), short-circuit (Jsc), open-circuit voltage (Voc), maximum power point (Jm, Vm) fill factor (FF). determined fundamental semiconductor notions. effect ideality on various also highlited. results are applied heterostructures based CuInS2 CuInSe2. increases with raising (η) for model. By varying from 1 3, calculated varies theoretically 8.4% 25.3% under AM1.5 spectrum structure CdS(n)/CuInS2(p) named model (b) photocurrent evaluated at 17 mA.cm-2 numerical calculation method. 6.8% 20.45% CdS(n)/CuInSe2(p) (a) 31 same used parameters. 0.5 V 1.5 0.27 0.8 (a). obtained (efficiency parameters) each remain within range experimental values published in literature cells chalcopyrite materials as CIGS (CuInxGa1-xSe2 or CuInxGa1-x(SySe1-y)2), thus allowing validate different methods established studied phenomena.