Detection of nerve agent stimulants based on photoluminescent porous silicon interferometer.

Content Provider	Europe PMC
Author	Kim, Seongwoong Cho, Bomin Sohn, Honglae
Copyright Year	2012
Abstract	Porous silicon (PSi) exhibiting dual optical properties, both Fabry-Pérot fringe and photolumincence, was developed and used as chemical sensors. PSi samples were prepared by an electrochemical etch of p-type silicon under the illumination of 300-W tungsten lamp during the etch process. The surface of PSi was characterized by cold field-emission scanning electron microscope. PSi samples exhibited a strong visible orange photoluminescence at 610 nm with an excitation wavelength of 460 nm as well as Fabry-Pérot fringe with a tungsten light source. Both reflectivity and photoluminescence were simultaneously measured under the exposure of organophosphate vapors. An increase of optical thickness and quenching photoluminescences under the exposure of various organophosphate vapors were observed.
ISSN	19317573
Journal	Nanoscale Research Letters
Volume Number	7
PubMed Central reference number	PMC3496637
Issue Number	1
PubMed reference number	23009146
e-ISSN	1556276X
DOI	10.1186/1556-276x-7-527
Language	English
Publisher	Springer
Publisher Date	2012-09-25
Access Restriction	Open
Rights License	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. Copyright ©2012 Kim et al.; licensee Springer.
Subject Keyword	Photoluminescence Porous silicon Fabry-Pérot Organophosphate Sensor
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Materials Science