Selective laser sintering method of manufacturing front electrode of silicon solar cell

• Autorzy: Dobrzański L. A. , Musztyfaga M. , Drygała A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the paper is to demonstrate a laser method of micro-machining front contacts of monocrystalline solar wafers. This means forming front electrodes in order to decrease their resistance. It was demonstrated, that laser processing is a promising technique for selective laser sintering (SLS) solar cell contacts compared conventional forming front grid methods. Design/methodology/approach: The topography of laser micro-machining contact formations and screen-printing were investigated using ZEISS SUPRA 25 scanning electron microscope. The materials used in the present invention are different granulation silver powders. The grain size analysis were used in order to determine their size. The transmission line model (TLM) patterns were fabricated by selective laser sintering. Findings: This work presents an initial analysis of a new selective laser sintering/melting process to contact crystalline silicon solar cells. The seed layer was created using both silver pastes and powders by a selective laser sintering, do not use up to now in Poland. These contact structures were investigated microscopically to gain a better understanding of the method and select laser micro-machining parameters, which will influence on electrical parameters of formed front side grids. Practical implications: SLS can produce parts from a relatively wide range of commercially available powder materials. The physical process can be full melting, partial melting, or liquid-phase sintering and depending on the material. The thickness of silicon solar wafer can cause some difficulties connected with adhesion electrode during contact formation process. Originality/value: In pursuing the purpose of increasing the efficiency ç of industrial crystalline solar cells to reduce costs of PV electricity, a measure to improve the front side grid is interesting – decreasing contact resistance and increasing efficiency in this way.

Słowa kluczowe

EN

electrical properties; solar cells; photovoltaics; laser micromachining; selective laser sintering; SLS; transmission line model

PL

właściwości elektryczne; ogniwo solarne; fotowoltaika; mikroobróbka laserowa; selektywne spiekanie laserowe; SLS; model linii transmisyjnej

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 42, nr 1-2
• Strony: 111--119
• Opis fizyczny: Bibliogr. 9 poz., rys., tabl.

Twórcy

autor

Dobrzański L. A.

autor

Musztyfaga M.

autor

Drygała A.

• 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,

Bibliografia

• [1] M. Alemán, A. Streek, P. Regenfuss, A. Mette, R. Ebert, H. Exner, S.W. Glunz, G. Willeke, Laser micro-sintering as a new metallization technique for silicon solar cells, Proceedings of the 21st European Photovoltaic Solar Energy Conference, Dresden, 2006 (CD-ROM).
• [2] S.W. Glunz, J. Dicker, M. Esterle, M. Hermle, J. Isenberg, F. Kamerewerd, J. Knobloch, G. Willeke, High-efficiency silicon solar cells for low-illumination applications, Proceedings of the 29th IEEE Photovoltaic Specialists Conference, New Orleans, 2002, 450-453.
• [3] H. Exner, P. Regnefuss, L. Hartwig, S. Klötzer, R. Ebert, Selective laser sintering with a Novel Process, Proceedings of the 4th International Symposium “Laser Precision Microfabrication” LPM 2003, Munich ,2003, 145-151.
• [4] www.ios.krakow.pl/uslugi/sls.php
• [5] S.W. Glunz, High-efficiency Crystalline Silicon Solar cells, Advances in Opto-Electrinics 2007 (2007) 1-15.
• [6] 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.
• [7] L.A. Dobrzański, M. Musztyfaga, A. Drygała., P. Panek, K. Drabczyk, P. Zięba, Manufacturing solar cells using screen painting, Proceedings of the 1st National Conference of Photovoltaic, Krynica-Zdrój, Poland, 2009, 1-9.
• [8] L.A. Dobrzański, A. Drygała, P. Panek, M. Lipiński, P. Zięba, Development of the laser method of multicrystalline silicon surface texturization, Archives of Materials Science and Engineering 38/1 (2009) 5-11.
• [9] L.A. Dobrzański, A. Drygała, Surface texturing of multicrystalline silicon solar cells, Journal of Achievements in Materials and Manufacturing Engineering 31/1 (2008) 77-82.