Study of porous silicon surface by mass spectroscopy methods
DOI:
https://doi.org/10.15587/1729-4061.2014.33550Keywords:
porous silicon, electrochemical hydrogenation, multicrystalline substrate, mass spectrometry, photovoltaic cellAbstract
Silicon surfaces of multicrystalline substrates before and after the formation of porous silicon on them, used in the production of photovoltaic cells were studied by mass spectrometry methods. An analysis of the elemental surface composition by mass spectroscopy of secondary ions at various manufacturing stages, including before and after electrochemical etching to create a porous silicon layer was conducted in the research. Clean surfaces before etching in an electrolyte based on hydrofluoric acid (HF: C2H5OH=10:1) were compared with surfaces after the etching process, both at secondary ion spectra, and in 2D-ion images of the multicrystalline substrate surface that have been obtained on the mass-spectrometer TOF5 SIMS using a current of secondary ions CH3+. In particular, the presence of ion CH3+, which can saturate the dangling bonds of the porous silicon surface, obtained due to the electrochemical technology using etchant solutions based on hydrofluoric acid with the addition of ((CH3)2NCOH) was checked. As can be seen from the above mass spectroscopy spectra, both oxygen complexes and hydrogen bonds are present on a clean silicon surface before etching. As shown in the 2D-ion image of the sample surface, the surface of the etched silicon contains a large number of secondary ions CH3+. This is also evident from the spectra of secondary ion emission of the silicon surface before and after etching.
References
- Bilyalov, R. R., Lüdemann, R., Wettling, W., Stalmans, L., Poortmans, J., Nijs, J. et. al. (2000). Multicrystalline silicon solar cells with porous silicon emitter. Solar Energy Materials and Solar Cells, 60 (4), 391–420. doi: 10.1016/s0927-0248(99)00102-6
- Huang, Y. M., Ma, Q.-L., Meng, M. (2011). Porous silicon based solar cells, Materials Science Forum, 663-665, 836–839. doi: 10.4028/www.scientific.net/msf.663-665.836
- Jinsu, Y., Gwonjong, Y., Junsin, Y. (2009). Black surface structures for crystalline silicon solar cells. Materials Science and Engineering, B, 159-160, 333–337. doi: 10.1016/j.mseb.2008.10.019
- Fang, W., Changshui, C., Huili, H. (2011). Analysis of sunlight loss for femtosecond laser microstructed silicon and its solar cell efficiency, Applied Physics A, 103 (4), 977–982. doi: 10.1007/s00339-010-6095-0
- Foil, Н., Christophersen, М., Carstensen, J.,. Hasse, G. (2002). Formation and application of porous silicon, Materials Science and Engineering R, 39, 93–141.
- Yerokhov, V. Yu., Melnyk, I. I., Gasko, L. Z., Iznin, O. I. (1998). Porous silicon hydrogenizing for solar cells”, In Proc. of First World Conference "Porous Semiconductors: Science and Technology”. Mallorca, Spain, 169.
- Yerokhov, V. Yu, Melnyk, I. I., Bogdanovsky, N., Iznin, O. I. (1998). Hydrogenated porous silicon in solar cells structure, In Proc. of 2nd World Conference on Photovoltaic Solar Energy Conversion, Vienna, Austria, 1256–1259.
- Bertoni, M. I., Udelson, S., Newman, B. K., Bernardis, S. et. al. (2010). Impact of defect type on hydrogen passivation effectiveness in multicrystalline silicon solar cells, In Proc. of the 35th IEEE Photovoltaic Specialists Conference, 345. doi: 10.1109/pvsc.2010.5616904
- Druzhynin, A. O., Jerohov, V. Ju., Berchenko, N. N. (2014). Study of surface multicrystalline substrates silicon saturated aqueous by mass spectroscopy. Eastern-European Journal of Enterprise Technologies, 1/5(67), 34–37. Available at: http://journals.uran.ua/eejet/article/view/21053/18887
- Salman, K. A., Omar, K., Hassan, Z. (2011). The effect of etching time of porous silicon on solar cell performance. Superlattices and Microstructures, 50(6), 647–658. doi: 10.1016/j.spmi.2011.09.006
- Banerjee, S., Narasimhan, K. L., Sardesai, A. (1994). Role of Hydrogen- and oxygen-terminated surfaces in the luminescence of porous silicon, Physical Review B, 49 (4), 2915–2918. doi: 10.1103/physrevb.49.2915
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2014 Валерій Юрійович Єрохов, Микола Миколайович Берченко, Степан Ігорович Нічкало, Євген Іванович Бережанський
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
