DOI: https://doi.org/10.15587/1729-4061.2015.40067

Modification of the properties of porous silicon for solar cells by hydrogenation

Валерій Юрійович Єрохов, Анатолій Олександрович Дружинін, Ольга Валерієвна Єрохова

Abstract


The prospects of creating a solar cell with antireflection coating on porous silicon were shown, for which the process of electrochemical hydrogenation of porous silicon on p-type silicon substrates with a resistivity of 0.1...10 Om×sm and substrates with the formed emitter junction n+-p was studied. For the process of electrochemical hydrogenation of porous silicon at its cathodic polarization, potentiostatic current-voltage curves of the system Pt (anode) - electrolyte - «porous silicon/silicon» (cathode) for electrolytes with different chemical composition were studied. A comparison of the photoluminescence spectra of as-grown, chemically processed and hydrogenated porous layers has shown that hydrogen saturation of the porous silicon surface during cathodic polarization increases photoluminescence intensity to a level typical for samples that previously have passed special chemical treatment. The research results of luminescent properties of hydrogenated porous silicon layers can be interpreted by an increase in photoluminescence intensity of hydrogenated porous silicon layers. These results are confirmed by experiments on the secondary ion mass spectrometer (SIMS), where, after hydrogenation, we can see a steady intensity (number of the read pulses) of secondary ions of the multicrystalline Baysix type silicon substrate surface in static mode with the presence of H2+ ions. Through the model representation of the silicon PEC structure with the antireflection coating based on the porous silicon layer, the solar cell was developed and its parameters, which have shown that the conversion efficiency of the SC with hydrogenated porous silicon is by 1.28 times higher (16.1%) than without it (12 6%) were measured. 


Keywords


solar cell; porous silicon; photoluminescence; electrochemical hydrogenation; mass spectra

References


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GOST Style Citations


Huang, Y. M. Porous silicon based solar cells [Text] / Y. M. Huang, Q.-L. Ma, M. Meng // Materials Science Forum. – 2011. – Vol. 663-665. – P. 836–839. doi: 10.4028/www.scientific.net/msf.663-665.836 

Weber, K. J. Silicon liquid phase epitaxy for epilift solar cells [Text] / K. J. Weber; A. W. Blakers; M. J. Stocks, A. Thompson // Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference. – 2003. – Vol. 2. – P. 1265–1267.

 Bilyalov, R. R. Multicrystalline silicon solar cells with porous silicon emitter [Text] / R. R. Bilyalov, R. Lüdemann, W. Wettling, L. Stalmans, J. Poortmans, J. Nijs et. al. // Solar Energy Materials and Solar Cells. – 2000. – Vol. 60, Issue 4. – Р. 391–420. doi: 10.1016/s0927-0248(99)00102-6 

Fang, W. Analysis of sunlight loss for femtosecond laser microstructed silicon and its solar cell efficiency [Text] / W. Fang, C. Changshui, H. Huili // Applied Physics A. – 2011. – Vol. 103, Issue 4. – P. 977–982. doi: 10.1007/s00339-010-6095-0 

Svavarsson, H. G. Thin film silicon for solar cell application grown from liquid phase on metallurgical grade silicon [Text] / H. G. Svavarsson, D. M. Danielsson and J. T. Gudmundsson // 23rd European Photovoltaic Solar Energy Conference. – Valencia, Spain , 2008. – P. 2221.

Muller, M. Silicon LPE on substrates from metallurgical silicon feedstock for large scale production [Text] / M. Muller, R. Kopecek, P. Fath, C. Zahedi and K. Peter // Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference. – 2003. – Vol.2. – P. 1221–1224.

Jinsu, Y. Black surface structures for crystalline silicon solar cells [Text] / Y. Jinsu, Y. Gwonjong, Y. Junsin // Materials Science and Engineering, B. – 2009. – Vol. 159-160. – P. 333–337. doi: 10.1016/j.mseb.2008.10.019 

Foil, Н., Formation and application of porous silicon [Text] / Н. Foil, М. Christophersen, J. Carstensen, G. Hasse // Materials Science and Engineering R. – 2002. – Vol. 39. – P. 93–141.

Salman, K. A. The effect of etching time of porous silicon on solar cell performance [Text] / K. A. Salman, K. Omar, Z. Hassan // Superlattices and Microstructures. – 2011 – Vol. 50, Issue 6. – P. 647–658. doi: 10.1016/j.spmi.2011.09.006 

Yerokhov, V. Yu. Porous silicon hydrogenizing for solar cells [Text] : In Proc. of First World Conference [Text] / V. Yu. Yerokhov, I. I. Melnyk, L. Z. Gasko, O. I. Iznin // In Proc. of First World Conference "Porous Semiconductors: Science and Technology”. – Mallorca, Spain, 1998. – P. 169.

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Yerokhov, V. Yu. Hydrogenated porous silicon in solar cells structure [Text]: In Proc. of 2nd World Conference / V. Yu. Yerokhov, I. I. Melnyk, N. Bogdanovsky, O. I. Iznin // Photovoltaic Solar Energy Conversion. – Vienna, Austria, 1998 – P. 1256–1259.

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Lavine, J. M. Role of Si-H and Si-H2 in photoluminescence of porous Si [Text] / J. M. Lavine, P. S. Sawan, T. Y. Shieh, A. J. Bellezza // Applied Physics Letters. – 1993 – Vol. 62, Issue 10. – P. 1099–1101. doi: 10.1063/1.108754 

Banerjee, S. Role of Hydrogen- and oxygen-terminated surfaces in the luminescence of porous silicon [Text] / S. Banerjee, K. L. Narasimhan, A. Sardesai // Physical Review B. – 1994 – Vol. 49, Issue 4. – P. 2915–2918. doi: 10.1103/physrevb.49.2915 

Дружинін, А. О. Дослідження поверхонь мультикристалічних підкладок кремнію насичених воднем методами мас-спектроскопії [Текст] / А. О. Дружинін, В. Ю. Єрохов, Н. Н. Берченко // Східно–Європейський журнал передових технологій. – 2014. – Т. 1, № 5(67). – C. 34–37. doi: 10.15587/1729-4061.2014.21053







Copyright (c) 2015 Анатолій Олександрович Дружинін, Валерій Юрійович Єрохов, Ольга Валерієвна Єрохова

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061