Na doping of CIGS solar cells using low sodium-doped mo layer

IEEE Journal of Photovoltaics

Volumn 3, Issue 1, 2013, Pages 509-513

  Salomé, Pedro ^a   Fjällström, Viktor ^a   Hultqvist, Adam ^a   Edoff, Marika ^a  

^a UPPSALA UNIVERSITY   (Sweden)

Author keywords

Photovoltaic cells; solar energy; thin films

Indexed keywords

BACK CONTACT; CIGS SOLAR CELLS; CU(IN , GA)SE; ELECTRICAL PERFORMANCE; GROWTH CONDITIONS; NA DOPED; NA DOPING; PRECISE CONTROL; SODA LIME GLASS SUBSTRATE; THIN-FILM SOLAR CELLS;

COPPER; PHOTOVOLTAIC CELLS; SEMICONDUCTING SELENIUM COMPOUNDS; SOLAR CELLS; SOLAR ENERGY; THIN FILMS;

SODIUM;

EID: 84871731235     PISSN: 21563381     EISSN: None     Source Type: Journal    
DOI: 10.1109/JPHOTOV.2012.2226144     Document Type: Article

References (24)

1. P. Jackson, D. Hariskos, E. Lotter, S. Paetel, R. Wuerz, R. Menner, W. Wischmann, and M. Powalla, "New world record efficiency for Cu(In, Ga)Se2 thin-film solar cells beyond 20%," Prog. Photovoltaics: Res. Appl., vol. 19, pp. 894-897, 2011.
2. M. A. Green, K. Emery, Y. Hishikawa, and W. Warta, "Solar cell efficiency tables (version 37)," Prog. Photovoltaics: Res. Appl., vol. 19, pp. 84-92, 2011.
3. E. Wallin, U. Malm, T. Jarmar, O. Lundberg, M. Edoff, and L. Stolt, "World-record Cu(In, Ga)Se2-based thin-film sub-module with 17. 4% efficiency," Prog. Photovoltaics: Res. Appl., vol. 20, pp. 851-854, 2012.
4. J. Kessler, M. Bodegard, J. Hedstrom, and L. Stolt, "New world record Cu(In, Ga)Se2 based mini-module: 16. 6%," in Proc. 16th Eur. Photovoltaic Solar Energy Conf., Glasgow, U. K., 2000, pp. 2057-2060.
5. J. Hedstr̈om, H. Ohlśen, M. Bodegard, A. Kylner, L. Stolt, D. Hariskos, M. Ruckh, and H.-W. Schock, "ZnO/CdS/Cu(In, Ga)Se2 thin film solar cells with improved performance," in Proc. 23rd IEEE Photovoltaic Spec. Conf., 1993, pp. 364-371.
6. M. Bodegard, K. Granath, and L. Stolt, "Growth of Cu(In, Ga)Se2 thin films by coevaporation using alkaline precursors," Thin Solid Films, vol. 361-362, pp. 1-16, 2000.
7. M. Ruckh, D. Schmid, M. Kaiser, R. Schiffler, T. Walter, and H. W. Schock, "Influence of substrates on the electrical properties of Cu(In, Ga)Se2 thin films," Solar Energy Mater. Solar Cells, vol. 41-42, pp. 335-343, 1996. (Pubitemid 126357082)
8. D. Rudmann, G. Bilger, M. Kaelin, F.-J. Haug, H. Zogg, and A. N. Tiwari, "Effects of NaF coevaporation on structural properties of Cu(In, Ga)Se2 thin films," Thin Solid Films, vol. 431-432, pp. 37-40, 2003.
9. D. Rudmann, A. F. da Cunha, M. Kaelin, F. Kurdesau, H. Zogg, A. N. Tiwari, and G. Bilger, "Efficiency enhancement of Cu(In, Ga)Se2 solar cells due to post-deposition Na incorporation," Appl. Phys. Lett., vol. 84, no. 7, pp. 1129-1131, Feb. 16, 2004.
10. C. Heske, R. Fink, E. Umbach, W. Riedl, and F. Karg, "Na-induced effects on the electronic structure and composition of Cu(In, Ga)Se2 thin-film surfaces," Appl. Phys. Lett., vol. 68, pp. 3431-3433, 1996. (Pubitemid 126684321)
11. D. W. Niles, K. Ramanathan, F. Hasoon, R. Noufi, B. J. Tielsch, and J. E. Fulghum, "Na impurity chemistry in photovoltaic CIGS thin films: Investigation with X-ray photoelectron spectroscopy," J. Vac. Sci. Technol. A, vol. 15, pp. 3044-3049, 1997. (Pubitemid 127600075)
12. R. Caballero, C. A. Kaufmann, T. Eisenbarth, A. Grimm, I. Lauermann, T. Unold, R. Klenk, and H. W. Schock, "Influence of Na on Cu(In, Ga)Se2 solar cells grown on polyimide substrates at low temperature: Impact on the Cu(In, Ga)Se2/Mo interface," Appl. Phys. Lett., vol. 96, pp. 092104-1-092104-3, 2010.
13. X. Song, R. Caballero, R. F́elix, D. Gerlach, C. A. Kaufmann, H.-W. Schock, R. G. Wilks, and M. B̈ar, "Na incorporation into Cu(In, Ga)Se2 thin-film solar cell absorbers deposited on polyimide: Impact on the chemical and electronic surface structure," J. Appl. Phys., vol. 111, pp. 034903-1-034903-8, 2012.
14. D. Braunger, D. Hariskos, G. Bilger, U. Rau, and H. W. Schock, "Influence of sodium on the growth of polycrystalline Cu(In, Ga)Se2 thin films," Thin Solid Films, vol. 361-362, pp. 161-166, 2000. (Pubitemid 30552382)
15. D. J. Schroeder and A. A. Rockett, "Electronic effects of sodium in epitaxial CuIn1x Gax Se2," J. Appl. Phys., vol. 82, no. 10, pp. 4982-4985, Nov. 15, 1997.
16. M. A. Contreras, B. Egaas, P. Dippo, J. Webb, J. Granata, K. Ramanathan, S. Asher, A. Swartzlander, and R. Noufi, "On the role of Na and modifications to Cu(In, Ga)Se2 absorber materials using thin-MF (M = Na, K, Cs) precursor layers [solar cells]," in Proc. 26th Photovoltaic Spec. Conf., Sep. 30-Oct. 3, 1997, pp. 359-362.
17. P.-P. Choi, O. Cojocaru-Miŕedin, R. Wuerz, and D. Raabe, "Comparative atom probe study of Cu(In, Ga)Se2 thin-film solar cells deposited on sodalime glass and mild steel substrates," J. Appl. Phys., vol. 110, pp. 124513-1-124513-7, 2011.
18. D. Rudmann, D. Bŕemaud, A. F. da Cunha, G. Bilger, A. Strohm, M. Kaelin, H. Zogg, and A. N. Tiwari, "Sodium incorporation strategies for cigs growth at different temperatures," Thin Solid Films, vol. 480-481, pp. 55-60, 2005. (Pubitemid 40642950)
19. K. Herz, A. Eicke, F. Kessler, R. Ẅachter, and M. Powalla, "Diffusion barriers for CIGS solar cells on metallic substrates," Thin Solid Films, vol. 431-432, pp. 392-397, May 1, 2003.
20. J. H. Yun, K. H. Kim, M. S. Kim, B. T. Ahn, S. J. Ahn, J. C. Lee, and K. H. Yoon, "Fabrication of CIGS solar cells with a Na-doped Mo layer on a Na-free substrate," Thin Solid Films, vol. 515, pp. 5876-5879, 2007. (Pubitemid 46635649)
21. L. M. Mansfield, I. L. Repins, S. Glynn, M. D. Carducci, D. M. Honecker, J. W. Pankow, M. R. Young, C. DeHart, R. Sundaramoorthy, C. L. Beall, and B. To, "Sodium-doped molybdenum targets for controllable sodium incorporation in CIGS solar cells," in Proc. IEEE 37th IEEE Photovoltaic Spec. Conf., Jun. 2011, pp. 003636-003641.
22. J. Malmstr̈om, S. Schleussner, and L. Stolt, "Enhanced back reflectance and quantum efficiency in Cu(In, Ga)Se2 thin film solar cells with a ZrN back reflector," Appl. Phys. Lett., vol. 85, pp. 2634-2636, 2004.
23. L. Stolt, J. Hedstr̈om, J. Kessler, M. Ruckh, K.-O. Velthaus, and H. W. Schock, "ZnO/CdS/CuInSe2 thin-film solar cells with improved performance," Appl. Phys. Lett., vol. 62, pp. 597-599, 1993.
24. D. Rudmann, A. F. da Cunha, M. Kaelin, F. Kurdesau, H. Zogg, A. N. Tiwari, and G. Bilger, "Efficiency enhancement of Cu(In, Ga)Se2 solar cells due to post-deposition Na incorporation," Appl. Phys. Lett., vol. 84, no. 7, pp. 1129-1131, Feb. 16, 2004.