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Electronics 2018, 7(11), 324; https://doi.org/10.3390/electronics7110324

Equivalent Circuit Model for Cu(In,Ga)Se2 Solar Cells Operating at Different Temperatures and Irradiance

1
Institute of Materials for Electronics and Magnetism, National Research Council (IMEM-CNR), Parco Area Delle Scienze 37/A, 43124 Parma, Italy
2
Department of Engineering, University Roma Tre, Via Vito Volterra, 64, 00146 Rome, Italy
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 18 October 2018 / Revised: 8 November 2018 / Accepted: 12 November 2018 / Published: 15 November 2018
(This article belongs to the Section Microelectronics and Optoelectronics)
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Abstract

The modeling of photovoltaic cells is an essential step in the analysis of the performances and characterization of PV systems. This paper proposes an experimental study of the dependence of the five parameters of the one-diode model on atmospheric conditions, i.e., irradiance and temperature in the case of thin-film solar cells. The extraction of the five parameters was performed starting from two sets of experimental data obtained from Cu(In,Ga)Se2 solar cells fabricated by the low-temperature pulsed electron deposition technique. A reduced form approach of the one-diode model has been adopted, leading to an accurate identification of the cell. It was possible to elaborate suitable relations describing the behavior of the parameters as functions of the environmental conditions. This allowed accurately predicting the trends of the parameters from a pair of curves, instead of a whole set of measurements. The developed model describing the dependence on irradiance and temperature was validated by means of a large set of experimental measurements on several Cu(In,Ga)Se2 (CIGS) devices built with the same technological process. View Full-Text
Keywords: Cu(In,Ga)Se2 solar cell; one-diode model; experimental characterization; temperature dependence; irradiance dependence Cu(In,Ga)Se2 solar cell; one-diode model; experimental characterization; temperature dependence; irradiance dependence
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bronzoni, M.; Colace, L.; De Iacovo, A.; Laudani, A.; Lozito, G.M.; Lucaferri, V.; Radicioni, M.; Rampino, S. Equivalent Circuit Model for Cu(In,Ga)Se2 Solar Cells Operating at Different Temperatures and Irradiance. Electronics 2018, 7, 324.

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