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Purpose: This paper presents technology of multicrystalline silicon solar cells with laser texturization step. The texturing of polycrystalline silicon surface using Nd:YAG laser makes it possible to increase absorption of the incident solar radiation. Moreover, the additional technological operation consisting in etching in 20% KOH solution at temperature of 80*C introduced into technology of the photovoltaic cells manufactured from laser textured wafers allows for significant improvement in their electrical performance compared to cells produced from the non-textured wafers after saw damage removal. Design/methodology/approach: The topography of laser textured surfaces were investigated using DSM 940 OPTON scanning electron microscope and LSM 5 Pascal ZEISS confocal laser scanning microscope. The reflectance of produced textures was measured by Perkin-Elmer Lambda spectrophotometer with an integrating sphere. Electrical parameters of manufactured solar cells were characterized by measurements of I-V light characteristics under standard AM 1.5 radiation. Findings: Solar cells manufactured from laser-textured polycrystalline silicon wafers demonstrate worse electrical performance than cells manufactured from the non-textured wafers after saw damage removal as well as wafers textured by etching in alkaline solutions. Etching of textured surface in 20% KOH solution at temperature of 80*C subsequent to laser processing shows to have a greatly increased impact on electrical performance of solar cells. Research limitations/implications: Continued etching to remove laser induced defects cause the texture to flatten out reducing it optical effectiveness. Originality/value: This paper demonstrates, that laser processing is very promising technique for texturing multicrystaline silicon independent on grains crystallographic orientation compared to conventional texturing methods in technology of solar cells.
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Tom
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7--14
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Bibliogr. 18 poz., il., tab., wykr.
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autor
- Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland, leszek.dobrzanski@polsl.pl
Bibliografia
- [1] A. Goetzberger, V. U. Hoffmann, Photovoltaic solar energy generation, Springer-Verlag, Berlin, 2005.
- [2] Z. M. Jarzębski, Solar Energy: Photovoltaic conversion, PWN, Warsaw, 1990 (in Polish).
- [3] E. Klugmann, E. Klugmann-Radziemska, Alternative sources of energy. Photovoltaic energy, Economy and Environment, Białystok, 1999 (in Polish).
- [4] P. Maycock, T. Bradford, PV market update, demand grows quickly and supply races to catch up, Renewable Energy World 10 (2007) 4-10.
- [5] J. Nijs, S. Sivoththaman, J. Szlufcik, K. De Clercq, F. Duerinckx, E. Van Kerschaever, R. Einhaus, J. Poortmans, T. Vermeulen, R. Mertens, Overview of solar cell technologies and results on high efficiency multicrystalline silicon substrates, Solar Energy Materials and Solar Cells 48 (1997) 199-217.
- [6] L. A. Dobrzański, A. Drygała, Laser processing of multi-crystalline silicon for texturization of solar cells, Journal of Materials Processing Technology 191 (2007) 228-231.
- [7] L. A. Dobrzański, A. Drygała, Processing of silicon surface by Nd:YAG laser, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 321-324.
- [8] L. A. Dobrzański, A. Drygała, K. Gołombek, P. Panek, E. Bielańska, P. Zięba, Laser surface treatment of multicrystalline silicon for enhancing optical properties, Journal of Materials Processing Technology 201 (2008) 291-296.
- [9] L. A. Dobrzański, A. Drygała, P. Panek, M. Lipiński, P. Zięba, Application of laser in silicon surface processing, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 179-182.
- [10] F. Duerinckx, J. Szlufcik, J. Nijs, R. Mertens, C. Gerhard, C. Markmann, P. Gath, G. Willeke, High efficiency, mechanically V-textured, screen printed multicrystalline silicon solar cells with silicon nitride passivation, Proceedings of the 2nd World Conference „Photovoltaic Solar Energy Conversion”, Leuven, 1998, 1248-1253.
- [11] R. Einhaus, E. Vazsonyi, R. Mertens, Isotropic texturing of multicrystalline silicon wafers with acid texturing, Proceedings of the 26th IEEE Photovoltaic Specialists Conference, Anahiem, 1997, 167-170.
- [12] K. Fukui, Y. Inomata, K. Shirasawa, Surface texturing using reactive ion etching for multicrystalline silicon solar cell, Proceedings of the 26th IEEE Photovoltaic Specialists Conference, Anahiem, 1998, 47-50.
- [13] G. Kumaravelu, M. M. Alkaisi, A. Bittar, Surface texturing for silicon solar cells using reactive ion etching technique, Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, 2002, 258-261.
- [14] E. S. Marstein, H. J. Solheim, D. N. Wright, A. Holt, Acid texturing of multicrystalline silicon wafers, Proceedings of the 31st IEEE Photovoltaic Specialists Conference, Florida, 2005, 1309-1312.
- [15] P. Panek, M. Lipinski, J. Dutkiewicz, Texturization of multicrystalline silicon by wet chemical etching for silicon solar cells, Journal of Materials Science 40/6 (2005) 1459-1463.
- [16] J. Rentsch, N. Kohn, F. Bamberg, K. Roth, S. Peters, R. Ludemann, R. Preu, Isotropic plasma texturing of mc-Si for industrial solar cell fabrication, Proceedings of the 31st IEEE Photovoltaic Specialists Conference, Florida, 2005, 1316-1319.
- [17] J. Szlufcik, S. Sivoththaman, J. F. Nijs, R. P. Mertens, R. van Overstraeten, Low-cost industrial technologies of crystalline Silicon solar cells, Proceedings of the Institute of Electrical and Electronics Engineers 85/5 (1997) 711-730.
- [18] P. Menna, G. Di Francia, V. La Ferrara, Porous silicon in solar cells, A review and description of its application as an AR coating, Solar Energy Materials and Solar Cells 37 (1995) 13-24.
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BWAN-0003-0050