Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon

We present an investigation on a coupled system consists of gold nanoparticles and silicon nanocrystals. Gold nanoparticles (AuNPs) embedded into porous silicon (PSi) were prepared using the electrochemical deposition method. Scanning electron microscope images and energy-dispersive X-ray results in...

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Detalles Bibliográficos
Autores principales: Amran, Tengku Sarah Tengku, Hashim, Md Roslan, Al-Obaidi, Nihad K Ali, Yazid, Hanani, Adnan, Rohana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2013
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3563575/
https://www.ncbi.nlm.nih.gov/pubmed/23331761
http://dx.doi.org/10.1186/1556-276X-8-35
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author Amran, Tengku Sarah Tengku
Hashim, Md Roslan
Al-Obaidi, Nihad K Ali
Yazid, Hanani
Adnan, Rohana
author_facet Amran, Tengku Sarah Tengku
Hashim, Md Roslan
Al-Obaidi, Nihad K Ali
Yazid, Hanani
Adnan, Rohana
author_sort Amran, Tengku Sarah Tengku
collection PubMed
description We present an investigation on a coupled system consists of gold nanoparticles and silicon nanocrystals. Gold nanoparticles (AuNPs) embedded into porous silicon (PSi) were prepared using the electrochemical deposition method. Scanning electron microscope images and energy-dispersive X-ray results indicated that the growth of AuNPs on PSi varies with current density. X-ray diffraction analysis showed the presence of cubic gold phases with crystallite sizes around 40 to 58 nm. Size dependence on the plasmon absorption was studied from nanoparticles with various sizes. Comparison with the reference sample, PSi without AuNP deposition, showed a significant blueshift with decreasing AuNP size which was explained in terms of optical coupling between PSi and AuNPs within the pores featuring localized plasmon resonances.
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spelling pubmed-35635752013-02-05 Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon Amran, Tengku Sarah Tengku Hashim, Md Roslan Al-Obaidi, Nihad K Ali Yazid, Hanani Adnan, Rohana Nanoscale Res Lett Nano Express We present an investigation on a coupled system consists of gold nanoparticles and silicon nanocrystals. Gold nanoparticles (AuNPs) embedded into porous silicon (PSi) were prepared using the electrochemical deposition method. Scanning electron microscope images and energy-dispersive X-ray results indicated that the growth of AuNPs on PSi varies with current density. X-ray diffraction analysis showed the presence of cubic gold phases with crystallite sizes around 40 to 58 nm. Size dependence on the plasmon absorption was studied from nanoparticles with various sizes. Comparison with the reference sample, PSi without AuNP deposition, showed a significant blueshift with decreasing AuNP size which was explained in terms of optical coupling between PSi and AuNPs within the pores featuring localized plasmon resonances. Springer 2013-01-18 /pmc/articles/PMC3563575/ /pubmed/23331761 http://dx.doi.org/10.1186/1556-276X-8-35 Text en Copyright ©2013 Amran et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Amran, Tengku Sarah Tengku
Hashim, Md Roslan
Al-Obaidi, Nihad K Ali
Yazid, Hanani
Adnan, Rohana
Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
title Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
title_full Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
title_fullStr Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
title_full_unstemmed Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
title_short Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
title_sort optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3563575/
https://www.ncbi.nlm.nih.gov/pubmed/23331761
http://dx.doi.org/10.1186/1556-276X-8-35
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