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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 21, Iss. S2 — Mar. 11, 2013
  • pp: A295–A304

Nanoimprinted diffraction gratings for crystalline silicon solar cells: implementation, characterization and simulation

Alexander Mellor, Hubert Hauser, Christine Wellens, Jan Benick, Johannes Eisenlohr, Marius Peters, Aron Guttowski, Ignacio Tobías, Antonio Martí, Antonio Luque, and Benedikt Bläsi  »View Author Affiliations

Optics Express, Vol. 21, Issue S2, pp. A295-A304 (2013)

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Light trapping is becoming of increasing importance in crystalline silicon solar cells as thinner wafers are used to reduce costs. In this work, we report on light trapping by rear-side diffraction gratings produced by nano-imprint lithography using interference lithography as the mastering technology. Gratings fabricated on crystalline silicon wafers are shown to provide significant absorption enhancements. Through a combination of optical measurement and simulation, it is shown that the crossed grating provides better absorption enhancement than the linear grating, and that the parasitic reflector absorption is reduced by planarizing the rear reflector, leading to an increase in the useful absorption in the silicon. Finally, electro-optical simulations are performed of solar cells employing the fabricated grating structures to estimate efficiency enhancement potential.

© 2013 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(050.1950) Diffraction and gratings : Diffraction gratings

ToC Category:

Original Manuscript: December 5, 2012
Manuscript Accepted: January 21, 2013
Published: February 27, 2013

Alexander Mellor, Hubert Hauser, Christine Wellens, Jan Benick, Johannes Eisenlohr, Marius Peters, Aron Guttowski, Ignacio Tobías, Antonio Martí, Antonio Luque, and Benedikt Bläsi, "Nanoimprinted diffraction gratings for crystalline silicon solar cells: implementation, characterization and simulation," Opt. Express 21, A295-A304 (2013)

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  1. D. Kray, K. R. McIntosh, “Analysis of ultrathin high-efficiency silicon solar cells,” Phys. Status Solidi 206(7), 1647–1654 (2009) (a). [CrossRef]
  2. P. Sheng, A. N. Bloch, R. S. Stepleman, “Wavelength-selective absorption enhancement in thin-film solar cells,” Appl. Phys. Lett. 43(6), 579–581 (1983). [CrossRef]
  3. C. Heine, R. H. Morf, “Submicrometer gratings for solar energy applications,” Appl. Opt. 34(14), 2476–2482 (1995). [CrossRef] [PubMed]
  4. S. H. Zaidi, J. M. Gee, and D. S. Ruby, “Diffraction grating structures in solar cells,” in Photovoltaic Specialists Conference, 2000. Conference Record of the Twenty-Eighth IEEE (2000), pp. 395–398.
  5. P. Berger, H. Hauser, D. Suwito, S. Janz, M. Peters, B. Bläsi, and M. Hermle, “Realization and evaluation of diffractive systems on the back side of silicon solar cells,” in Proc. SPIE 7725, Photonics for Solar Energy Systems III, R. B. Wehrspohn, and A. Gombert, eds. (SPIE, Brussels, Belgium, 2010), p. 772504.
  6. U. Plachetka, M. Bender, A. Fuchs, B. Vratzov, T. Glinsner, F. Lindner, H. Kurz, “Wafer scale patterning by soft UV-Nanoimprint Lithography,” Microelectron. Eng. 73–74, 167–171 (2004). [CrossRef]
  7. H. Hauser, B. Michl, V. Kübler, S. Schwarzkopf, C. Müller, M. Hermle, B. Bläsi, “Nanoimprint lithography for honeycomb texturing of multicrystalline silicon,” Energy Procedia 8, 648–653 (2011). [CrossRef]
  8. B. Bläsi, H. Hauser, O. Höhn, V. Kübler, M. Peters, A. J. Wolf, “Photon Management Structures Originated by Interference Lithography,” Energy Procedia 8, 712–718 (2011). [CrossRef]
  9. H. Hauser, B. Michl, S. Schwarzkopf, V. Kübler, C. Müller, M. Hermle, B. Bläsi, “Honeycomb Texturing of Silicon Via Nanoimprint Lithography for Solar Cell Applications,” IEEE Journal of Photovoltaics 2(2), 114–122 (2012). [CrossRef]
  10. M. Peters, M. Rüdiger, H. Hauser, M. Hermle, B. Bläsi, “Diffractive gratings for crystalline silicon solar cells—optimum parameters and loss mechanisms,” Prog. Photovolt. Res. Appl. 20(7), 862–873 (2012). [CrossRef]
  11. L. Zeng, Y. Yi, C. Hong, J. Liu, N. Feng, X. Duan, L. C. Kimerling, B. A. Alamariu, “Efficiency enhancement in Si solar cells by textured photonic crystal back reflector,” Appl. Phys. Lett. 89(11), 111111 (2006). [CrossRef]
  12. F. Ning-Ning, J. Michel, Z. Lirong, L. Jifeng, H. Ching-Yin, L. C. Kimerling, D. Xiaoman, “Design of highly efficient light-trapping structures for thin-film crystalline silicon solar cells,” Electron Devices, IEEE Transactions on 54(8), 1926–1933 (2007). [CrossRef]
  13. P. Bermel, C. Luo, L. Zeng, L. C. Kimerling, J. D. Joannopoulos, “Improving thin-film crystalline silicon solar cell efficiencies with photonic crystals,” Opt. Express 15(25), 16986–17000 (2007). [CrossRef] [PubMed]
  14. S. W. Glunz, “High-efficiency crystalline silicon solar cells,” Adv. Optoelectron. 2007, 97370 (2007). [CrossRef]
  15. B. Bläsi, H. Hauser, C. Walk, B. Michl, A. Guttowski, A. Mellor, J. Benick, M. Peters, S. Jüchter, C. Wellens, V. Kübler, M. Hermle, and A. J. Wolf, “Photon management structures for solar cells,” in Proc. SPIE 8438, Photonics for Solar Energy Systems IV, R. Wehrspohn, and A. Gombert, eds. (SPIE, Brussels, Belgium, 2012), pp. 84380Q–84312.
  16. A. Mellor, I. Tobías, A. Martí, A. Luque, “A numerical study of Bi-periodic binary diffraction gratings for solar cell applications,” Sol. Energy Mater. Sol. Cells 95(12), 3527–3535 (2011). [CrossRef]
  17. A. Mellor, I. Tobías, A. Martí, M. J. Mendes, A. Luque, “Upper limits to absorption enhancement in thick solar cells using diffraction gratings,” Prog. Photovolt. Res. Appl. 19(6), 676–687 (2011). [CrossRef]
  18. E. D. Palik, Handbook of Optical Constants of Solids (Academic Press, 1997).
  19. D. A. Clugston and P. A. Basore, “PC1D version 5: 32-bit solar cell modeling on personal computers,” in Photovoltaic Specialists Conference,1997., Conference Record of the Twenty-Sixth IEEE(Anaheim, California, USA, 1997), pp. 207–210.
  20. H. Hauser, A. Mellor, A. Guttowski, C. Wellens, J. Benick, C. Müller, M. Hermle, B. Bläsi, “Diffractive backside structures via nanoimprint lithography,” Energy Procedia 27, 337–342 (2012). [CrossRef]
  21. E. Schneiderlöchner, R. Preu, R. Lüdemann, S. W. Glunz, “Laser-fired rear contacts for crystalline silicon solar cells,” Prog. Photovolt. Res. Appl. 10, 29–34 (2002). [CrossRef]
  22. M. Rüdiger, M. Hermle, “Numerical analysis of locally contacted rear surface passivated silicon solar cells,” Jpn. J. Appl. Phys. 51, 10NA07 (2012). [CrossRef]
  23. B. Fischer, “Loss analysis of crystalline silicon solar cells using photoconductance and quantum efficiency measurements,” in Physics(University of Konstanz, Konstanz, 2003).
  24. Z. Yu, A. Raman, S. Fan, “Fundamental limit of nanophotonic light trapping in solar cells,” Proc. Natl. Acad. Sci. U.S.A. 107(41), 17491–17496 (2010). [CrossRef] [PubMed]

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