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Needles and Haystacks: Influence of Catalytic Metal Nanoparticles on Structural and Vibrational Properties and Morphology of Silicon Nanowires Synthesized by Metal-Assisted Chemical Etching

Published online by Cambridge University Press:  05 August 2013

M. K. Dawood
Affiliation:
GLOBALFOUNDRIES Singapore Pte. Ltd, Singapore 738406.
S. Tripathy
Affiliation:
Institute of Materials Research and Engineering (IMRE), Agency of Science Technology and Research (A*STAR), Singapore 117602.
S. B. Dolmanan
Affiliation:
Institute of Materials Research and Engineering (IMRE), Agency of Science Technology and Research (A*STAR), Singapore 117602.
T. H. Ng
Affiliation:
GLOBALFOUNDRIES Singapore Pte. Ltd, Singapore 738406.
T. Hao
Affiliation:
GLOBALFOUNDRIES Singapore Pte. Ltd, Singapore 738406.
J. Lam
Affiliation:
GLOBALFOUNDRIES Singapore Pte. Ltd, Singapore 738406.
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Abstract

Metal-assisted chemical etching (MACE) of silicon (Si) is a simple and low-cost process to fabricate Si nanostructures with varying aspect ratio and properties. In this work, we report on the structural and vibrational properties of Si nanostructures synthesized with varying metal catalyst. The morphology of the synthesized nanowires was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The optical and vibrational properties of the Si nanostructures were studied by photoluminescence and Raman spectroscopy using three different excitation sources (UV, visible and near-infrared) and are correlated to their microstructures. We propose that the excessive injection of holes into Si at the metal-Si interface and its diffusion to the nanowire surfaces facilitate the etching of Si on these surfaces, leading to a mesoporous network of Si nanocrystallites. When etched with catalytic Au nanoparticles, “hay-stacked” mesoporous Si nanowires were obtained. The straighter nanowires etched with Ag nanoparticles, consisted of a single crystalline core with a thin porous layer that decreased in thickness towards the base of the nanowire. This difference is due to the higher catalytic activity of Au compared to Ag for H2O2 decomposition. The SERRS observed during UV and visible Raman with Ag-etched Si nanowires and near-infrared Raman with Au-etched Si nanowires is due to the presence of the sunken metal nanoparticles. In addition, we explored the influence of varying H2O2 and HF concentration as well as the influence of increased etching temperature on the resultant nanostructured Si morphology. Such Si nanostructures may be useful for a wide range of applications such as photovoltaic and biological and chemical sensing.

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Articles
Copyright
Copyright © Materials Research Society 2013 

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References

Huang, Z., Geyer, N., Werner, P., de Boor, J. and Gosele, U., Adv. Mater 23, 285308 (2011).CrossRef
Yuan, G. D., Zhou, Y. B., Guo, C. S., Zhang, W. J., Tang, Y. B., Li, Y. Q., Chen, Z. H., He, Z. B., Zhang, X. J., Wang, P. F., Bello, I., Zhang, R. Q., Lee, C.S. and Lee, S. T., ACS Nano 4, 3045 (2010).CrossRef
Hocbaum, A. I., Chen, R. K., Delagao, R. D., Liang, W. J., Garnett, E. C., Narjarian, M. and Yang, P. D., Nature (London) 451, 163167 (2008).CrossRef
Dawood, M. K., Zheng, H., Kurniawan, N. A., Leong, K. C., Foo, Y. L., Rajagopalan, R., Khan, S. A. and Choi, W. K., Soft Matter 8, 35493557 (2012).CrossRef
Dawood, M. K., Zheng, H., Liew, T. H., Leong, K. C., Foo, Y. L., Rajagopalan, R., Khan, S. A. and Choi, W. K., Langmuir 27, 41264133 (2011).CrossRef
Dawood, M. K., Tripathy, S., Dolmanan, S. B., Ng, T. H., Tan, H. and Lam, J., J. Appl. Phys. 112, 073509 (2012).CrossRef
Li, X. and Bohn, P. W., Appl. Phys. Lett. 77, 2572 (2000).CrossRef
Wolkin, M. V., Jorne, J., Fauchet, P. M., Allan, G. and Delerue, C., Phys. Rev. Lett 82, 197200 (1999).CrossRef
Tsu, R., Shen, H. and Dutta, M., Appl. Phys. Lett. 60, 112 (1992).CrossRef
Seo, Y. H., Lee, H.-J., Jeon, H. I., Oh, D. H., Nahm, K. S., Lee, Y. H., Suh, E.-K., Lee, H. J. and Kwang, Y. G., Appl. Phys. Lett. 62, 1818 (1993).CrossRef
Hocbaum, A. I., Gargas, D., Hwang, Y. J. and Yang, P. D., Nano Lett. 9, 35503554 (2009).CrossRef
Chen, S.-Y., Mock, J. J., Hill, R. T., Chilkoti, A., Smith, D. R. and Lazarides, A. A., ACS Nano 4, 65366546 (2010).
Fan, J.-G. and Zhao, Y.-P., Langmuir 24, 141472–14175 (2008).
Sanchez-Sanchez, C. M. and Bard, A. J., Anal. Chem. 81, 80948100 (2009).CrossRef
Magoariec, H. and Danescu, A., Phys. Status Solidi C 7, 16801684 (2009).CrossRef

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Needles and Haystacks: Influence of Catalytic Metal Nanoparticles on Structural and Vibrational Properties and Morphology of Silicon Nanowires Synthesized by Metal-Assisted Chemical Etching
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