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Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures

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Main Authors: Ayu Wazira, Azhari, Boon Tong, Goh, Suhaila, Sapeai, Mohd Khairunaz, Kamaruzzaman, Sopian, Saleem Hussain, Zaidi
Other Authors: ayuwazira@unimap.edu.my
Format: Article
Language:English
Published: Institute of Electrical and Electronics Engineers Inc. 2016
Subjects:
Heteroepitaxial growth
MACE
Self-assembled nanostructures
Si nanopillars
Solar cells
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42219
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spelling 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.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Heteroepitaxial growth
MACE
Self-assembled nanostructures
Si nanopillars
Solar cells
spellingShingle 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
description Link to publisher's homepage at http://ieeexplore.ieee.org
author2 ayuwazira@unimap.edu.my
author_facet 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
score 13.214268

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