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Detailed analysis of heat generation in silicon solar cells

Jeudi 21 janvier 2016 13:00 - Duree : 1 heure
Lieu : Salle Belledonne, IMEP-LaHC, bât. BCAi, Minatec

Orateur : Mohamed AMARA (INSA-Lyon)

In recent year the researches devoted to increase electrical conversion efficiency have led to the limit of 25% [1] at standard conditions i.e., AM1.5 spectrum and cell temperature at 25°C. However, the performances during their use are lower. This degradation caused by the temperature is generally described mathematically with a linear expression of the efficiency given by η=ηst(1-β(T-Tst)), where ηst is its value at cell’s temperature equal of 25°C. A review of β coefficient is summarized by Skoplaki et al.[2]. The general approaches available in literature to predict thermal behavior of PV cell, consist to use empirical correlations which link cell’s temperature to its environmental conditions (ambient temperature, solar irradiation, etc.) [2]. Other methods are based a resolution of energy balance equation, i.e., the incident solar irradiation absorbed within the PV panel is balanced between the electrical and the thermal energy. A good review of this approach is given by Jones et al [3]. On the other hand, there are a few theoretical studies about coupling heat transfer and carriers transport in semiconductor devices [4]–[7]. Only Vaillon et al. [7] studied silicon solar cells in particular. However, its thermal model based on Dramicanin [6] did not included heats sources generated by thermoelectric and Joule effects outlined by Lindefelt and Watchutka. This talk presents an insight into heat generation in silicon solar cells. A 1-D n+p junction solar cell is simulated thanks to our new tool TASC-1D that solves the radiative transfer problem, the continuity equations and the thermal transfer equation. [1] M. A. Green, K. Emery, Y. Hishikawa, W. Warta, and E. D. Dunlop, “Solar cell efficiency tables (version 43),” Prog. Photovoltaics Res. Appl., vol. 22, no. 1, pp. 1–9, Jan. 2014. [2] E. Skoplaki and J. a. Palyvos, “On the temperature dependence of photovoltaic module electrical performance : A review of efficiency/power correlations,” Sol. Energy, vol. 83, no. 5, pp. 614–624, May 2009. [3] A. D. Jones and C. P. Underwood, “A THERMAL MODEL FOR PHOTOVOLTAIC SYSTEMS,” vol. 70, no. 4, pp. 349–359, 2001.[4] U. Lindefelt, “Heat generation in semiconductor devices,” J. Appl. Phys., vol. 75, no. 2, p. 942, 1994.[5] G. K. Watchutka, “Rigorous Thermodynamic Treatment of Heat Generation and Conduction in Semiconductor Device Modeling,” IEEE Trans. Comput. aided Des., vol. 9, no. 11, pp. 1141–1149, 1990. [6] M. Dramicanin, Z. Ristovski, P. Nikolic, D. Vasiljevic, and D. Todorovic, “Photoacoustic investigation of transport in semiconductors : Theoretical and experi mental study of a Ge single crystal,” Phys. Rev. B, vol. 51, no. 20, pp. 14226–14232, 1995. [7] R. Vaillon, L. Robin, C. Muresan, and C. Me, “Modeling of coupled spectral radiation, thermal and carrier transport in a silicon photovoltaic cell,” Int. J. Heat Mass Transf., vol. 49, pp. 4454–4468, 2006.


Contact : bauza@minatec.grenoble-inp.fr

Discipline évènement : (Physique)
Entité organisatrice : (IMEP/LAHC)
Nature évènement : (Séminaire)
Evènement répétitif : (Séminaire IMEP-LAHC)
Site de l'évènement : Site Minatec

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