Analysis of Performance Parameters of Amorphous Photovoltaic Modules under Different Environmental Conditions

A.A. Ghoneim, K.M. Kandil, A.Y. Al-Hasan, M. S. Altouq, A.M. Al-asaad, L. M. Alshamari, A. A. Shamsaldein


The effects of temperature and radiation intensity on the performance parameters of amorphous hydrogenated silicon (a-Si:H) photovoltaic module have been investigated. An outdoor experimental setup is installed to carryout a series of I-V curve measurements under different irradiance and temperature conditions for the module. A numerical model which considers the effect of series and shunt resistances is developed to evaluate the different parameters of PV modules. Orthogonal distance regression (ODR) algorithm is adapted for fitting I-V measurements and extracting module parameters from I-V measurements. The values of module parameters, series resistance Rs, shunt resistance Rsh, diode ideality factor n and reverse saturation current Io determined from I-V measurements at different irradiation intensity and temperature range are in good agreement with the corresponding parameters obtained from the developed numerical model. The module parameters extracted from I-V measurements are employed to calculate the module performance parameters, i.e. open circuit voltage Voc, fill factor FF and module efficiency h at different irradiation intensity and temperature range. Present results indicate that the module parameters have a significant effect on module performance. Also, the behavior of Voc is completely different at higher temperatures.

Key words: Amorphous module parameters;  Ideality factor; Series resistance; Shunt resistance


Amorphous module parameters; Ideality factor; Series resistance; Shunt resistance

Full Text:



[1] Poortmans J., & Arkhipov, V. (2006). Thin Film Solar Cells Fabrication, Characterization and Applications. John Wiley & Sons Ltd, West Sussex PO19 8SQ, England.

[2] Agarwal S.K., Muralidharan, R., Agarwal, A., Tiwary, V.K., & Jain, S.C. (1981). A New Method for the Measurement of Series Resistance of Solar Cells. Journal of Physics D: Applied Physics, 14, 1643-1646.

[3] Chegaar M., Ouennouchi, Z., & Hoffmann, A. (2001). A New Method for Evaluating Illuminated Solar Cell Parameters. Solid-State Electron, 45, 293–296.

[4] Ishibashi K.I, Kimura, Y., & Niwano, M. (2008). An Extensively Valid and Stable Method for Derivation of all Parameters of a Solar Cell from a Single Current–Voltage Characteristics. Journal of Applied Physics, 103, 094507.

[5] Singh S.N., & Husain, M. (2010). Effect of Illumination Intensity on Cell Parameters of a Silicon Solar Cell. Solar Energy Materials and Solar Cells, 94, 1473-1476.

[6] Townsend T.U. (1989). A Method for Estimating the Long-Term Performance of Direct-Coupled Photovoltaic System. M.Sc. Thesis, Mechanical Engineering, University of Wisconsin-Madison.

[7] Ortiz-Conde A., Garcia Sanchez, F.J., & Muci, J. (2006). New Methods to Extract Model Parameters of Solar Cells from the Explicit Analytic Solutions of Their Illuminated I–V Characteristics. Solar Energy Materials and Solar Cells, 90, 352–361.

[8] De Soto W., Klein, S.A., & Beckman, W.A. (2006). Improvement and Validation of a Model for Photovoltaic Array Performance. Solar Energy, 80, 78-88.

[9] Burgers A.R. (2004). Fitting Flash Test Curves with ECN's I-V Curve Fitting Program IVFIT. Proceedings 14th International Photovoltaic Science and Engineering Conference ( PVSEC). Bangkok, Thailand, 26-30 January.

[10] Klein S.A., et al. (1994). TRNSYS Users Manual, Version 14.1. University of Wisconsin Engineering Experimental Station.

[11] Hegedus S.S., & Shafarman, W.S. (2004). Thin-Film Solar Cells: Device Measurements And Analysis. Progress in Photovoltaics: Research and Applications, 12 (2), 155-176.

[12] Merten J., Asensi, J.M., Voz, C., Shah, A.V., Platz, R., & Andreu, J. (1989). Improved Equivalent Circuit and Analytical Model for Amorphous Silicon Solar Cells and Modules. IEEE Transaction on Electronic Devices, 45 (2), 423-429.

[13] Radue C., & van Dyk, E.E. (2010). A Comparison of Degradation in Three Amorphous Silicon PV Module Technologies. Solar Energy Materials and Solar Cells, 94, 617-622.

[14] Meyer E.L., & van Dyk, E.E., (2004). Assessing the Reliability and Degradation of Photovoltaic Module Performance Parameters. IEEE Transactions on Reliability, 53 (1), 83-92.

[15] Del Cueto J.A., & von Roedern, B. (1999). Temperature-Induced Changes in the Performance of Amorphous Silicon Multi-Junction Modules in Controlled Light-Soaking. Progress in Photovoltaics: Research and Applications, 7(2), 101-112.




  • There are currently no refbacks.

Copyright (c)

Share us to:   


If you have already registered in Journal A and plan to submit article(s) to Journal B, please click the CATEGORIES, or JOURNALS A-Z on the right side of the "HOME".

We only use three mailboxes as follows to deal with issues about paper acceptance, payment and submission of electronic versions of our journals to databases:;;

 Articles published in Energy Science and Technology are licensed under Creative Commons Attribution 4.0 (CC-BY).


Address: 9375 Rue de Roissy Brossard, Québec, J4X 3A1, Canada 
Telephone: 1-514-558 6138 
Website: Http:// Http://;

Copyright © 2010 Canadian Research & Development Centre of Sciences and Cultures