Effects of IPA on Texturing Process for Mono-Crystalline Silicon Solar Cell in TMAH Solution

Abstract:

Texturization of mono-crystalline by chemical anisotropic etching is one of the most important technologies for modern silicon photovoltaic. IPA is usually added to the alkaline etchants to improve the uniformity of the random pyramid texture due to remove hydrogen bubbles sticking on the silicon wafer by improving the wettability of wafer surface. In this investigation, we carried out a systematic study on the influence of IPA concentrations on the textured surface. The etching experiments were performed on (100) silicon wafer in a mixture of 20 vol. % commercial TMAH solutions (10 wt.%) and IPA (rang from 0~12 vol. %) for etching time ranging from 10 to 70 min at 80°C. The etching mechanism in the TMAH solutions with IPA addition was explained basing on the experimental results and the theoretical considerations.

• Periodical: Materials Science Forum (Volume 685)
• Pages: 31-37
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.685.31
• Online since: June 2011
• Authors: Wei Ying Ou, Yao Zhang, Hai Ling Li, Lei Zhao, Chun Lan Zhou, Hong Wei Diao, Min Liu, Wei Ming Lu, Jun Zhang, Wen Jing Wang
• Keywords: IPA, Pyramid, Texture, TMAH

References

[1] P. Campbell, M.A. Green: J. Appl. Phys Vol 62 (1987), p.243.

[2] J.M. Rodrfguez, I. Tobias, A. Luque: Solar Energy Materials & Solar Cells Vol. 45 (1997), p.241.

[3] U. Gangopadhyay, K. Kim, S.K. Dhungel, P.K. Basu, J. Yi: Renewable Energy Vol. 31 (2006), p. (1906).

[4] U. Gangopadhyay, K. Kim, A. Kandol, J. Yi, H. Saha: Solar Energy Materials & Solar Cells Vol. 90 (2006), p.3094.

DOI: 10.1016/j.solmat.2006.06.014

[5] H. Park, J. Sung. Lee, S. Kwon, S. Yoon, D. Kim: Current Applied Physics Vol. 10 (2010), p.113.

[6] D. Iencinella, E. Centurioni, R. Rizzoli, F. Zignani: Solar Energy Materials & Solar Cells Vol. 87 (2005), p.725.

DOI: 10.1016/j.solmat.2004.09.020

[7] I. Zubel, M. Kramkowska: Sensors and Actuators A Vol. 93 (2001), p.138.

[8] W.K. Choi, J.T.L. Thong, P. Luo, C.M. Tan, T.H. Chua, Y. Bai: Sensors and Actuators A Vol. 71 (1998), p.238.

[9] H. Seidel, L. Csepregi, A. Heuberger, H. Baumgärtel: J. Electrochem. Soc Vol. 137 (1990), p.3612.

[10] J. S. You, D. Kim, J.Y. Huh, H. J. Park, J.J. Pak, C.S. Kang: Solar Energy Materials & Solar Cells Vol. 66 (2001), p.37.

DOI: 10.1016/s0927-0248(00)00156-2

[11] P. Papet, O. Nichiporuk, A. Kaminski, Y. Rozier, J. Kraiem, J.F. Lelievre, A. Chaumartin, A. Fave, M. Lemiti: Solar Energy Materials & Solar Cells Vol 90 (2006), p.2319.

DOI: 10.1016/j.solmat.2006.03.005