Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures
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Institute of Electrical and Electronics Engineers Inc.
2016
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my.unimap-422192016-06-28T08:23:13Z Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures Ayu Wazira, Azhari Boon Tong, Goh Suhaila, Sapeai Mohd Khairunaz Kamaruzzaman, Sopian Saleem Hussain, Zaidi ayuwazira@unimap.edu.my Heteroepitaxial growth MACE Self-assembled nanostructures Si nanopillars Solar cells Link to publisher's homepage at http://ieeexplore.ieee.org The aim of this work is to synthesize nm-scale columnar structures in Si principally for solar cell applications. These structures are also desirable as templates for heteroepitaxial growth of SixGe1-x. A nanostructured layer is instrumental in facilitating pseudomorphic heteroepitaxial growth of SixGe1-x layers since it can help reduce lattice mismatch as well as thermal expansion mismatch, thus, leading to Si-based high efficiency solar cells at lower cost. A simple yet promising method was chosen to synthesize randomly distributed, nm-scale columnar structures. This metal assisted chemical etching (MACE) technique uses metal-induced oxidation of silicon to anisotropic trenches. Preliminary results indicate that nm-scale columns as characterized by field emission scanning microscopy (FE-SEM) consist of fine pores running parallel to the wafer surface and deeply etched anisotropic columns perpendicular to the surface. All etching work was carried out on (100) orientation Si wafers. Results indicate strong dependence on solution concentration both in terms of profile and etch rate. Optical characterization based on spectral reflectance and transmission measurements have been employed in characterizing the nm-scale surfaces. Initial studies indicate low reflectance and high absorption with increasing depth of the nanostructures. 2016-06-28T08:11:45Z 2016-06-28T08:11:45Z 2013-06 Article 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), pages 0530 - 0534 0160-8371 http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42219 10.1109/PVSC.2013.6744206 en Institute of Electrical and Electronics Engineers Inc. |
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English |
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Heteroepitaxial growth MACE Self-assembled nanostructures Si nanopillars Solar cells |
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Heteroepitaxial growth MACE Self-assembled nanostructures Si nanopillars Solar cells Ayu Wazira, Azhari Boon Tong, Goh Suhaila, Sapeai Mohd Khairunaz Kamaruzzaman, Sopian Saleem Hussain, Zaidi Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
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Link to publisher's homepage at http://ieeexplore.ieee.org |
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ayuwazira@unimap.edu.my |
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ayuwazira@unimap.edu.my Ayu Wazira, Azhari Boon Tong, Goh Suhaila, Sapeai Mohd Khairunaz Kamaruzzaman, Sopian Saleem Hussain, Zaidi |
| format |
Article |
| author |
Ayu Wazira, Azhari Boon Tong, Goh Suhaila, Sapeai Mohd Khairunaz Kamaruzzaman, Sopian Saleem Hussain, Zaidi |
| author_sort |
Ayu Wazira, Azhari |
| title |
Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
| title_short |
Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
| title_full |
Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
| title_fullStr |
Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
| title_full_unstemmed |
Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
| title_sort |
synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures |
| publisher |
Institute of Electrical and Electronics Engineers Inc. |
| publishDate |
2016 |
| url |
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42219 |
| _version_ |
1643799644957835264 |