Abstract

BOTERO-LONDONO, Mónica Andrea; VARGAS-TORRES, Hermann Raúl  and  CALDERON-TRIANA, Clara Lilia. PRODUCTION OF SOLAR CELLS AND ESTIMATION OF ITS ELECTRICAL PARAMETERS FROM ITS EXPERIMENTAL CHARACTERIZATION. Rev. ing. univ. Medellín [online]. 2022, vol.21, n.40, pp.15-27.  Epub Oct 31, 2022. ISSN 1692-3324.  https://doi.org/10.22395/rium.v21n40a2.

In this work, solar cells with Mo/CuInSe2/CdS/n+-ZnO structure were depo sited and experimentally characterized by the I-V curve. From these results, the electrical parameters were estimated fitting, theoretically, the curve to determine the most important variables. The estimation was carried out using the single and double diode models and comparing the curve that best fits. The estimated variables were photogenerated current (Iph), dark current of the diode (Is), series resistance (Rs), shunt resistance (Rp) and diode ideality factors (a1 and a2) according to each model of circuit taken for optimization. The adjustment of the current-vol tage (I-V) and power-voltage (P-V) curves achieved with the double diode model indicates that in the manufactured solar cells, interfacial states are present in the p-n junction, which decreases the efficiency of the device.

Keywords : thin film solar cells; parameter estimation; diode model; optimization..

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