Development of porous silicon‐coated gold nanoparticles as potential theragnostic material

2021 ◽  
Author(s):  
Jiwon Kim ◽  
Sumin Hwang ◽  
Quy Son Luu ◽  
Donghyuk Jo ◽  
Uyen Thi Do ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon

Enhancement of efficiency in graphene/porous silicon solar cells by co-doping graphene with gold nanoparticles and bis(trifluoromethanesulfonyl)-amide

2017 ◽  
Vol 5 (35) ◽  
pp. 9005-9011 ◽  
Author(s):  
Ju Hwan Kim ◽  
Dong Hee Shin ◽  
Ha Seung Lee ◽  
Chan Wook Jang ◽  
Jong Min Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Solar Cells ◽  
Porous Silicon ◽  
Au Nanoparticles ◽  
Silicon Solar Cells ◽  
Porous Si ◽  
Co Doping ◽  
Si Solar Cells ◽  
First Time

The co-doping of graphene with Au nanoparticles and bis(trifluoromethanesulfonyl)-amide is employed for the first time to enhance the performance of graphene/porous Si solar cells.

Gold nanoclusters reductively deposited on porous silicon: morphology and electronic structures

1998 ◽  
Vol 76 (11) ◽  
pp. 1707-1716 ◽  
Author(s):  
I Coulthard ◽  
S Degen ◽  
Y -J Zhu ◽  
T K Sham
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon ◽  
Photoelectron Spectroscopy ◽  
Gold Nanoclusters ◽  
Gold Complex ◽  
X Ray Diffraction ◽  
Complex Ions ◽  
X Ray ◽  
Preparation Conditions ◽  
P Type

Utilizing porous silicon as a reducing agent and a substrate, gold complex ions [AuCl4]- were reduced from aqueous solution to produce nanoparticles of gold upon the surface of porous silicon. Scanning electron microscopy (SEM) was utilized to study the morphology of the porous silicon layers and the deposits of gold nanoparticles. It is found that preparation conditions have a profound effect on the morphology of the deposits, especially on porous silicon prepared from a p-type wafer. The gold nanoparticles, varying from micrometric aggregates of clusters of the order of 10 nm, to a distribution of nearly spherical clusters of the order of 10 nm, to strings of ~10 nm were observed and compared to bulk gold metal using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy (XAS). These techniques confirm and complement the SEM findings. The potential for this reductive deposition technique is noted.Key words: gold nanostructures, reductive deposition, porous silicon, morphology, X-ray spectroscopy.

scholarly journals Decoration of Porous Silicon with Gold Nanoparticles via Layer-by-Layer Nanoassembly for Interferometric and Hybrid Photonic/Plasmonic (Bio)sensing

2019 ◽  
Vol 11 (46) ◽  
pp. 43731-43740 ◽  
Author(s):  
Stefano Mariani ◽  
Alessandro Paghi ◽  
Antonino A. La Mattina ◽  
Aline Debrassi ◽  
Lars Dähne ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon ◽  
Layer By Layer

Localized-Surface-Plasmon Enhanced Emission from Porous Silicon by Gold Nanoparticles

2011 ◽  
Vol 11 (12) ◽  
pp. 10886-10890 ◽  
Author(s):  
Hui Wang ◽  
AN Zhenghua ◽  
Qijun Ren ◽  
Hengliang Wang ◽  
Feilong Mao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon ◽  
Surface Plasmon ◽  
Localized Surface Plasmon

Morphological and Optical Characterization of Gold Nanoparticles Decorated Porous Silicon

2019 ◽  
Vol 19 (6) ◽  
pp. 3604-3609
Author(s):  
F Severiano ◽  
V. L Gayou ◽  
G García ◽  
J. A Luna-López ◽  
H. Martínez Gutiérrez ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon ◽  
Chemical Etching ◽  
Silicon Layer ◽  
Porous Silicon Layer ◽  
Sem Analysis ◽  
Etching Time ◽  
Si Nanocrystals ◽  
Average Size ◽  
20 Nm

In this article, physical characteristics of porous silicon (PS) obtained by electro chemical etching using HAuCl4 in the electrolyte are described. The morphological and optical features of PS decorated with gold-nanoparticles (AuNPs) were analyzed in function of the chemical etching time. The insertion of AuNPs inside the PS were performed simultaneously with the formation of the porous silicon layer. Scanning electron microscopy (SEM) analysis showed the formation and incorporation of AuNPs with an average size of 20 nm in the PS structure, which has a pore size of 1.5 μm. Also, it was possible to observe the loss of Si in function of the etching time. Photoluminescence spectroscopy analysis shows a decreasing of the PL intensity, which can be related to the presence of oxygen in the samples. Raman spectroscopy was used to estimate the size of the Si nanocrystals in the PS structure, which suffers a reduction in size due to the presence of HAuCl4 in the electrolyte.

Organic vapor sensor using photoluminescence of laser ablated gold nanoparticles on porous silicon

Optik ◽  
2017 ◽  
Vol 144 ◽  
pp. 546-552 ◽  
Author(s):  
Uday Muhsin Nayef ◽  
Intisar Mohammed Khudhair ◽  
Ersin Kayahan
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon ◽  
Organic Vapor ◽  
Vapor Sensor
Sign in / Sign up

Export Citation Format

Share Document