Funct. Mater. 2013; 20 (2): 186-191.
Thin films of Cu2ZnSnS4 for solar cells: optical and structural properties
[1]V.Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 45 Prospect Nauky, 03028 Kyiv, Ukraine
[2]Facultad de Ciencias, Universidad Autonoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
The structure of Cu2ZnSnS4 films was investigated by Raman spectroscopy, scanning electron microscopy, energy dispersive X-ray spectrometry, optical reflectance and photoluminescence. The films were formed by thermal annealing layers of copper, zinc and tin sulfides on glass substrates at different substrate temperature and ambient atmosphere. It was revealed that the films have the dominant structure of kesterite with possible inclusions of stannite Cu2ZnSnS4 structure. Under certain growth conditions, however, segregation of Cu2–xS occurs, as proved by registering the characteristic peak in Raman spectra. No traces of secondary phases of zinc or tin sulphides are found.
1. T.Unold, H.W.Schok, Annu. Rev. Mater. Res., 41, 297 (2011). http://dx.doi.org/10.1146/annurev-matsci-062910-100437
2. I.Repins, M.A.Contreras, B.Egaas et al., Prog. Photovolt. Res. Appl., 16, 235 (2008). http://dx.doi.org/10.1002/pip.822
3. S.Siebentritt, S.Schorr, Prog. Photovolt. Res. Appl., 20, 512 (2012). http://dx.doi.org/10.1002/pip.2156
4. D.Aaron, R.Barkhouse, O.Gunawan et al., Prog. Photovolt. Res. Appl., 99, 262105 (2011).
5. H.Matsushita, T.Maeda, A.Katsui, T.Takizawa, J. Cryst. Growth, 208, 416 (2000). http://dx.doi.org/10.1016/S0022-0248(99)00468-6
6. O.V.Parasyuk, L.D.Gulay, Ya.E.Romanyuk, L.V.Piskach, J. Alloys Comp., 329, 202 (2001). http://dx.doi.org/10.1016/S0925-8388(01)01606-1
7. Ya.E.Romanyuk, O.V.Parasyuk, J. Alloys. Comp., 348, 195 (2003). http://dx.doi.org/10.1016/S0925-8388(02)00852-6
8. S.Schorr, H.-J.Hoebler, M.Tovar, Eur. J. Mineral., 19, 65 (2007). http://dx.doi.org/10.1127/0935-1221/2007/0019-0065
9. S.Schorr, Solar Energy Mater and Solar Cells, 95, 1482 (2011). http://dx.doi.org/10.1016/j.solmat.2011.01.002
10. X.Fontane, L.Calvo-Barrio, V.Izquierdo-Roca et al., Appl. Phys. Lett., 98, 181905 (2011). http://dx.doi.org/10.1063/1.3587614
11. S.A.Kissin, Can. Mineral., 27, 689 (1989).
12. S.R.Hall, J.T.Szymanski, J.M.Stewart, Can. Mineral., 16, 131 (1978).
13. S.Chen et al., Phys. Rev., B 79, 165211 (2009). http://dx.doi.org/10.1103/PhysRevB.79.165211
14. J. Alvarez-Garcia, V. Izquierdo-Roca, A. Perez-Rodriguez, Raman Spectroscopy on thin films for solar cells, in Advanced Characterization Techniques for Thin Film Solar Cells. Ed. U. Rau, D. Abou-Ras, T. Kirchatz, Wiley - VCH Verlag, 365 (2011)
15. M.Himmrich, H.Haeuseler, Spectrochim. Acta, 47A, 933 (1991). http://dx.doi.org/10.1016/0584-8539(91)80283-O
16. T.Gurel, C.Sevik, T.Cgin, Phys. Rev., B 84, 205201 (2011). http://dx.doi.org/10.1103/PhysRevB.84.205201
17. P.A.Fernandes, P.M.P.Salome, A.F.daCunha, Thin Solid Films, 517, 2519 (2009). http://dx.doi.org/10.1016/j.tsf.2008.11.031
18. K.Muska, M.Kauk, M.Altosaar et al., Energy Procedia, 10, 203 (2011). http://dx.doi.org/10.1016/j.egypro.2011.10.178
19. K.Woo, Y.Kim, J.Moon, Energy Environ. Sci., 5, 5340 (2012). http://dx.doi.org/10.1039/C1EE02314D
20. M.Altosaar, J.Raudoja, K.Timmo et al., Phys. Stat. Sol., 205, 167 (2008). http://dx.doi.org/10.1002/pssa.200776839
21. H.Yoo, J.K.Kim, Thin Solid Films, 518, 6567 (2010). http://dx.doi.org/10.1016/j.tsf.2010.03.058
22. X.Fontane, V.Izquierdo-Rosa, E.Saucedo et al., J. Alloys and Comp., 539, 190 (2012). http://dx.doi.org/10.1016/j.jallcom.2012.06.042
23. R.B.V.Chalapathy, G.S.Jung, B.T.Ahn, Solar Energy Mater. and Solar Cells, 95, 3216 (2011). http://dx.doi.org/10.1016/j.solmat.2011.07.017
24. J.P.Leitao, N.M.Santos, P.A.Fernandes et al., Phys. Rev., B 84, 024120 (2011). http://dx.doi.org/10.1103/PhysRevB.84.024120
25. M.Grossberg, J.Krustok, J.Raudoja, T.Raadik, Appl. Phys. Lett., 101, 102102 (2012). http://dx.doi.org/10.1063/1.4750249