Abstract
Experimental evidences for a recently proposed mechanism of tin-induced crystallization of amorphous silicon are presented. The mechanism discusses a crystalline phase growth through cyclic processes of formation and decay of a super-saturated solution of silicon in molten tin at the interface with the amorphous silicon. The suggested mechanism is validated using a nonlinear dynamical model that takes into account the mass diffusion of the components of the system, heat transfer caused by latent (crystallization) heat release and amorphous silicon dissolution events, and concentration nonuniformities created by silicon crystallization. The analysis of a stationary-state solution of the model confirms the existence of periodic solutions for the partial volume of the crystalline phase and other system’s variables. Possible applications of the proposed mechanism in manufacturing of cost-effective nanocrystalline silicon films for the third-generation solar cell technology are discussed.
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M.C. Beard, J.M. Luther, and A.J. Nozik: The promise and challenge of nanostructured solar cells. Nat. Nanotechnol. 9, 951 (2014).
D.L. Staebler and C.R. Wronski: Reversible conductivity changes in discharge-produced amorphous Si. Appl. Phys. Lett. 31, 292 (1977).
Z.I. Alferov, V.M. Andreev, and V.D. Rumyantsev: Solar photovoltaics: Trends and prospects. Semiconductors 38(8), 899 (2004).
B. Yan, G. Yue, X. Xu, J. Yang, and S. Guha: High efficiency amorphous and nanocrystalline silicon solar cells. Phys. Status Solidi A 207(3), 671 (2010).
N.S. Lewis: Toward cost-effective solar energy use. Science 315, 798 (2007).
R. Søndergaard, M. Hösel, D. Angmo, T.T. Larsen-Olsen, and F.C. Krebs: Roll-to-roll fabrication of polymer solar cells. Mater. Today 15(1–2), 36 (2012).
M. Birkholz, B. Selle, E. Conrad, K. Lips, and W. Fuhs: Evolution of structure in thin microcrystalline silicon films grown by electron-cyclotron resonance chemical vapor deposition. J. Appl. Phys. 88(7), 4376 (2000).
B. Rech, T. Roschek, J. Müller, S. Wieder, and H. Wagner: Amorphous and microcrystalline silicon solar cells prepared at high deposition rates using RF (13.56 MHz) plasma excitation frequencies. Sol. Energy Mater. Sol. Cells 66(1–4), 267 (2001).
M.K. van Veen, C.H.M. van der Werf, and R.E.I. Schropp: Tandem solar cells deposited using hot-wire chemical vapor deposition. J. Non-Cryst. Solids 338, 655 (2004).
Y. Mai, S. Klein, R. Carius, H. Stiebig, L. Houben, X. Geng, and F. Finger: Improvement of open circuit voltage in microcrystalline silicon solar cells using hot wire buffer layers. J. Non-Cryst. Solids 352(9–20), 1859 (2006).
H. Li, R.H. Franken, R.L. Stolk, C.H.M. van der Werf, J.K. Rath, and R.E.I. Schropp: Controlling the quality of nanocrystalline silicon made by hot-wire chemical vapor deposition by using a reverse H2 profiling technique. J. Non-Cryst. Solids 354(19–25), 2087 (2008).
R. Amrani, F. Pichot, J. Podlecky, A. Foucaran, L. Chahed, and Y. Cuminal: Optical and structural proprieties of nc-Si:H prepared by argon diluted silane PECVD. J. Non-Cryst. Solids 358(17), 1978 (2012).
G. Fugallo and A. Mattoni: Thermally induced recrystallization of textured hydrogenated nanocrystalline silicon. Phys. Rev. B 89, 045301 (2014).
J-S. Ro: Crystallization of amorphous silicon films using Joule heating. J. Korean Inst. Surf. Eng. 47(1), 20 (2014).
O. Nast and S.R. Wenham: Elucidation of the layer exchange mechanism in the formation of polycrystalline silicon by aluminum-induced crystallization. J. Appl. Phys. 88(1), 124 (2000).
A. Mohiddon and G. Krishna: Metal induced crystallization. In Crystallization — Science and Technology, A. Marcello ed. (InTech, Rijeka, Croatia, 2012); p. 461.
D. van Gestel, I. Gordon, and J. Poortmans: Aluminum-induced crystallization for thin-film polycrystalline silicon solar cells: Achievements and perspective. Sol. Energy Mater. Sol. Cells 119, 261 (2013).
V.B. Neimash, A. Kraitchinskii, M. Kras’ko, O. Puzenko, C. Claeys, E. Simoen, B. Svensson, and A. Kuznetsov: Influence of tin impurities on the generation and annealing of thermal oxygen donors in Czochralski silicon at 450 °C. J. Electrochem. Soc. 147, 2727 (2000).
C. Claeys, E. Simoen, V.B. Neimash, A. Kraitchinskii, M. Kras’ko, O. Puzenko, A. Blondeel, and P. Clauws: Tin doping of silicon for controlling oxygen precipitation and radiation hardness. J. Electrochem. Soc. 148, G738 (2001).
R.W. Olesinski and G.J. Abbaschian: The Si–Sn (silicon–tin) system. Bull. Alloy Phase Diagrams 5(3), 273 (1984).
M.A. Mohiddon and M.G. Krishna: Growth and optical properties of Sn–Si nanocomposite thin films. J. Mater. Sci. 47, 6972 (2012).
M. Jeon, C. Jeong, and K. Kamisako: Tin induced crystallization of hydrogenated amorphous silicon thin films. Mater. Sci. Technol. 26, 875 (2010).
R.P. Thornton, R.G. Elliman, and J.S. Williams: Amorphous-to-polycrystalline phase transformations in Sn-implanted silicon. J. Mater. Res. 5, 1003 (1990).
F. Lin and M.K. Hatalis: Crystallization of tin-implanted amorphous silicon thin films. MRS Proc. 279, 553–558 (1993).
G.N. Parsons, J.W. Cook, G. Lucovsky, S.Y. Lin, and M.J. Mantini: Deposition of a-Si,Sn:H alloy films by reactive magnetron sputtering from separate Si and Sn targets. J. Vac. Sci. Technol., A 4, 470 (1986).
R. Ragan, K.S. Min, and H.A. Atwater: Direct energy gap group IV semiconductor alloys and quantum dot arrays in SnxGe1−x/Ge and SnxSi1−x/Si alloy systems. Mater. Sci. Eng., B 87, 204 (2001).
V.V. Voitovych, V.B. Neimash, N.N. Krasko, A.G. Kolosiuk, V.Y. Povarchuk, R.M. Rudenko, V.A. Makara, R.V. Petrunya, V.O. Juhimchuk, and V.V. Strelchuk: The effect of Sn impurity on the optical and structural properties of thin silicon films. Semiconductors 45(10), 1281 (2011).
V.B. Neimash, V.M. Poroshin, A.M. Kabaldin, V.O. Yukhymchuk, P.E. Shepelyavyi, V.A. Makara, and S.Y. Larkin: Microstructure of thin Si–Sn composite films. Ukr. J. Phys. 58(9), 865 (2013).
V. Neimash, V. Poroshin, P. Shepeliavyi, V. Yukhymchuk, V. Melnyk, A. Kuzmich, V. Makara, and A.O. Goushcha: Tin induced a-Si crystallization in thin films of Si–Sn alloys. J. Appl. Phys. 114(21), 213104 (2013).
H. Richter, Z.P. Wang, and L. Ley: The one phonon Raman spectrum in microcrystalline silicon. Solid State Commun. 39(5), 625 (1981).
I.H. Campbell and P.M. Fauchet: The effects of microcrystal size and shape on the one phonon Raman spectra of crystalline semiconductors. Solid State Commun. 58(10), 739 (1986).
E. Bustarret, M.A. Hachicha, and M. Brunel: Experimental determination of the nanocrystalline volume fraction in silicon thin films from Raman spectroscopy. Appl. Phys. Lett. 52, 1675 (1988).
M. Hort and T. Spohn: Crystallization calculations for a binary melt cooling at constant rates of heat removal — Implications for the crystallization of magma bodies. Earth Planet. Sci. Lett. 107(3–4), 463 (1991).
R. Becker and W. Döring: Kinetic treatment of germ formation in supersaturated vapour. Ann. Phys. 24(8), 719 (1935).
N.S. Tavare: Industrial Crystallization: Process Simulation Analysis and Design (Plenum Press, New York, 1995); p. 527.
A. Sarikov, J. Schneider, M. Muske, S. Gall, and W. Fuhs: Theoretical study of the kinetics of grain nucleation in the aluminium-induced layer-exchange process. J. Non-Cryst. Solids 352(9–20), 980 (2006).
M. Avrami: Kinetics of phase change. I. General theory. J. Chem. Phys. 7(12), 1103 (1939).
E. Clouet: Modeling of nucleation processes. In ASM Handbook: Fundamentals of Modeling for Metals Processing, Vol. 22A, D.U. Furrer and S.L. Semiatin eds.; ASM International: Materials Park, OH, 2009; p. 203.
A. Hiraki: A model on the mechanism of room temperature interfacial intermixing reaction in various metal semiconductor couples: What triggers the reaction?J. Electrochem. Soc. 127, 2662 (1980).
H. Chikita, R. Matsumura, Y. Kai, T. Sadoh, and M. Miyao: Ultra-high-speed lateral solid phase crystallization of GeSn on insulator combined with Sn-melting-induced seeding. Appl. Phys. Lett. 105, 202112 (2014).
K. Toko, N. Oya, N. Saitoh, N. Yoshizawa, and T. Suemasu: 70 °C synthesis of high-Sn content (25%) GeSn on insulator by Sn-induced crystallization of amorphous Ge. Appl. Phys. Lett. 106, 082109 (2015).
K. Toko, R. Numata, N. Saitoh, N. Yoshizawa, N. Usami, and T. Suemasu: Selective formation of large-grained, (100)- or (111)-oriented Si on glass by Al-induced layer exchange. J. Appl. Phys. 115, 094301 (2014).
d.R. Numata, K. Toko, N. Saitoh, N. Yoshizawa, N. Usami, and T. Suemasu: Orientation control of large-grained Si films on insulators by thickness-modulated Al-induced crystallization. Cryst. Growth Des. 13, 1767 (2013).
G. Nicolis and I. Prigogine: Self-Organization in Nonequilibrium Systems: From Dissipative Structures to Order through Fluctuations (J. Wiley and Sons, New York; London; Sydney, 1977); p. 491.
H. Haken: Synergetics, an Introduction: Nonequilibrium Phase Transitions and Self-organization in Physics, Chemistry, and Biology, 3rd rev. ed. (Springer-Verlag, New York, 1983); p. 371.
A. Toramaru: A numerical experiment of crystallization for a binary eutectic system with application to igneous textures. J. Geophys. Res.: Solid Earth 106(B3), 4037 (2001).
A. Toramaru and M. Matsumoto: Numerical experiment of cyclic layering in a solidified binary eutectic melt. J. Geophys. Res.: Solid Earth 117, B02209 (2012).
H. D. Geiler, E. Glaser, G. Götz, and M. Wagner: Explosive crystallization in silicon. J. Appl. Phys. 59(9), 3091 (1986).
D. Kurtze, W. van Saarloos, and J. Weeks: Front propagation in self-sustained and laser-driven explosive crystal-growth—Stability analysis and morphological aspects. Phys. Rev. B 30(3), 1398 (1984).
W. van Saarloos and J.D. Weeks: Surface undulations in explosive crystallization—A nonlinear-analysis of a thermal-instability. Phys. D 12(1–3), 279 (1984).
I. Smagin and A. Nepomnyashchy: Stability analysis of explosive crystallization front in the ESPE mode. Phys. D 238(6), 706 (2009).
G.F. Wakefield and H.S.N. Setty: Tin-lead purification of silicon. Patent US3933981 A, 1976.
I.E. Maronchuk, T.F. Kulyutkina, and I.I. Maronchuk: Method for purification of technical purity silicon. Patent UA84653 (Ukraine), 2008.
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Neimash, V.B., Goushcha, A.O., Shepeliavyi, P.Y. et al. Self-sustained cyclic tin induced crystallization of amorphous silicon. Journal of Materials Research 30, 3116–3124 (2015). https://doi.org/10.1557/jmr.2015.251
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DOI: https://doi.org/10.1557/jmr.2015.251