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Technology for Efficiency Enhancement of Crystalline Si Solar Cell using Nano Imprint Process  

Cho, Young Tae (Dept. of Mechanical Eng., Changwon National Univ.)
Jung, Yoon Gyo (Dept. of Mechanical Eng., Changwon National Univ.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.12, no.5, 2013 , pp. 30-35 More about this Journal
Abstract
In order to increase cell efficiency in crystalline silicon solar cell, reduction of light reflection is one of the essential problem. Until now silicon wafer was textured by wet etching process which has random patterns along crystal orientation. In this study, high aspect ratio patterns are manufactured by nano imprint process and reflectance could be minimized under 1%. After that, screen printed solar cell was fabricated on the textured wafer and I-V characteristics was measured by solar simulator. Consequently cell efficiency of solar cell fabricated using the wafer textured by nano imprint process increased 1.15% than reference solar cell textured by wet etching. Internal quantum efficiency was increased in the range of IR wave length but decreased in the UV wavelength. In spite of improved result, optimization between nano imprinted pattern and solar cell process should be followed.
Keywords
Nanoimprint Lithography; Crystalline Si Solar Cell; Cell Efficiency;
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1 Koynov, S., Brandt, M. S. and Stutzmann, M., "Black Nonreflecting Silicon Surfaces for Solar Cells," Applied Physics Letters, Vol. 88, pp. 203107-203107-3, 2006.   DOI
2 Mette, A., Schetter, C., Wissen, D., Lust, S., Glunz, S. W. and Willeke, G., "Increasing the Efficiency of Screen Printed Silicon Solar Cells by Light Induced Silver Plating," Photovoltaic Energy Conference Record of the 2006 IEEE 4th World Conference on, Vol. 2, pp. 1056-1059, 2006.
3 Garnett, E. and Yang, P., "Light Trapping in Silicon Nanowire Solar Cells," Vol. 10, pp. 1082-1087, 2010.   DOI
4 Kluth, O., Rech, B., Houben, L., Wieder, S., Schope, G., Beneking, C., Wagner, H., Loffl, A. and Schock H.W., "Texture Etched ZnO:Al Coated Glass Substrates for Silicon Based Thin Film Solar Cells," Thin solid films, Vol. 351, pp. 247-253, 1999.   DOI
5 Muller, J., Rech, B., Springer, J., Vanec, M., "TCO and Light Trapping in Silicon Thin Film Solar Cells," Solar Energy, Vol. 77, pp. 917-930, 2004.   DOI
6 Zeng, L., Yi, Y., Hong, C., Liu, J., Feng, N., Duan, X., Kimerling, L.C. and Alamariu, B.A., "Efficiency enhancement in Si solar cells by textured photonic crystal back reflector," Applied Physics Letters, Vol. 89, pp. 111111-111111-3, 2006.   DOI
7 Battaglia, Cl, Escarre, J., Soderstrom, K., Erni, L., Ding, L., Bugnon, G., Billet, A., Boccard, M., Barr, L., Wolf, S.D., Haug F.J., Despeisse, M. and Ballif C., "Nanoimprint Lithography for High-Efficiency Thin Film Silicon Solar Cells," Nano Letters, Vol. 11, pp. 661-665, 2011.   DOI
8 Shin, I. D., Kim, Y. W., Choi, S. C. and Lee, D. W., "Development of DSC Module with a Rflector of Mcro Sructures", Proceedings of the KSMPE Spring Conference, pp. 133-137, 2009.
9 Poruba, A., Fejfar, A., Remes, Z., Springer, J., Vanec다, M., Kocka, J., Meier, J., Torres, P. and Shah, A., "Optical Absorption and Light Scattering in Microcrystalline Silicon Thin Films and Solar Cells," Journal of Applied Physics, Vol. 88, pp. 148-160, 2000.   DOI
10 Zhou, D. and Biswas, R., "Photonic crystal enhanced light trapping in thin film solar cells," Journal of Applied Physics, Vol. 103, pp. 093102-093102-5, 2008.   DOI
11 Lee, H., Shin, J. H. and Han, K. S., "Improving conversion efficiency of photovoltaics using anti-reflective and hydrophobic nano-structures," Proceedings of the KSMTE Spring Conference, pp. 332-333, 2011.
12 Bessonov, A., Cho, Y. T., Jung, S. J., Park, E.A., Hwang, E.S., Lee J. W., Shin, M. and Lee, S., "Nanoimprint Patterning for Tunable Light Trapping in Large Area Silicon Solar Cells," Solar Energy Materials and Solar Cells, Vol. 95, pp. 2886-2892, 2011.   DOI
13 Sai, H., Kanamori, Y., Arafune, K., Ohshita, Y. and Yamaguchi, M., "Light trapping effect of submicron surface textures in crystalline Si solar cells," Progress in Photovoltaics:Research and Applications, Vol. 15, pp. 415-423, 2007.   DOI
14 Macdonald, D. H., Cuevas, A., Ken, M. J., Samundsett, C., Ruby, D., Winderbaum, S. and Leo, A., "Texturing Industrial Multicrystalline Silicon Solar Cells," Solar Energy, Vol. 76, pp. 277-283, 2001.
15 Yoo, J.S., Parm, I.O., Gangopadhyay, U., Kim K., Dhungel, S. K., Mangalaraj, D. and Yi, J., "Black Silicon Layer Formation for Application in Solar Cells," Solar Energy Materials and Solar Cells, Vol. 90, pp. 3085-3093, 2006.   DOI