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Ali, M. A. |
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- 2021Impact of interfaces on perovskite solar cell’s stability
- 2021A machine vision tool for facilitating the optimization of large-area perovskite photovoltaics
- 2014Toluene-organic thin films partition coefficients analyzed with Langmuir adsorption theory and finite elements simulationscitations
- 2011CO 2 measurement using an AlN/SI SAW sensorcitations
- 2005Adsorption and Desorption Isotherms at Ambient Temperature Obtained by Ellipsometric Porosimetry to Probe Micropores in Ordered Mesoporous Silica Films
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document
CO 2 measurement using an AlN/SI SAW sensor
Abstract
Carbon dioxide at concentrations close to 390ppm in atmosphere has to be measured for greenhouse effect and the indoor air quality monitoring. This paper reports for the first time CO 2 measurement ranging from 0 to 3000ppm using a Surface Acoustic Wave sensor (SAW) based on Aluminum Nitride (AlN) technology. The detection is based on gravimetric approach using a 100 nm thick sensitive polymer bearing amino groups: poly(Allylamine) deposited over the SAW. A calculated CO 2 sensitivity of about 15.3 Hz/ppm performed using Finite Element Method is in good agreement with experiment.