PHOTOLUMINESCENCE QUENCHING TECHNIQUE: A SENSITIVE PROBE FOR DETECTING ORGANIC VAPORS AT LOW PPM-Reference-Cited by-同舟云学术

PHOTOLUMINESCENCE QUENCHING TECHNIQUE: A SENSITIVE PROBE FOR DETECTING ORGANIC VAPORS AT LOW PPM

Published:2011-08 Issue:04n05 Volume:10 Page:777-781
ISSN:0219-581X
Container-title:International Journal of Nanoscience
language:en
Short-container-title:Int. J. Nanosci.

Author:

DHANEKAR SAAKSHI¹,ISLAM S. S.¹,ISLAM T.¹,HARSH ²

Affiliation:

1. Nano-Sensor Research Laboratory, D/o Applied Sciences and Humanities, Jamia Millia Islamia (Central University), New Delhi 110025, India

2. Solidstate Physics Laboratory (DRDO), Teemarpur, Delhi 110054, India

Abstract

Crucial sensor parameters like sensitivity, response time and recovery time at low ppm were studied and analysed by photoluminescence (PL) quenching technique. A comparison was drawn from various porous silicon samples prepared under different electrochemical anodization conditions. Porosity dependent sensing results were analysed and it was observed that samples turned more sensitive with an increase in porosity. Samples were tested in the presence of linear aliphatic alcohols (methanol to n-octanol) and water in the range of 10–100 ppm. Trifling response was shown for water, while a discernible change in sensitivity was observed when samples were tested with alcohols. The morphological changes in porous structure and the chemical nature of organic adsorbates were ascertained to be the primary reasons for sensing by porous silicon.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Computer Science Applications,Condensed Matter Physics,General Materials Science,Bioengineering,Biotechnology

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0219581X11008885

Reference15 articles.

1. Optical sensing of flammable substances using porous silicon microcavities

2. Porous silicon microcavities as optical chemical sensors

3. Mechanisms of photoluminescence sensor response of porous silicon for organic species in gas and liquid phases

4. Chemical sensing by simultaneous measurement of photoluminescence intensity and photoluminescence decay time of porous silicon

5. Photoluminescence quenching of porous silicon in gas and liquid phases – the role of dielectric quenching and capillary condensation effects

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