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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/215233
Title: Kirkendall assisted formation of SnO2–Ag nanocomposite for plasmonic-based gas sensor
Authors: Gaiduk, P. I.
Prokopyev, S. L.
Keywords: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика
Issue Date: 2018
Publisher: Минск : БГУ
Citation: Материалы и структуры современной электроники : материалы VIII Междунар. науч. конф., Минск, 10–12 окт. 2018 г. / Белорус. гос. ун-т ; редкол.: В. Б. Оджаев (отв. ред.) [и др.]. – Минск : БГУ, 2018. – С. 210-214.
Abstract: Nano-composite layers of SnO2-Ag are produced after deposition of Sn1-xAgx alloy on a fused silica (FS) followed by thermal oxidation. Silver nano-particles are formed inside the SnO2 layer during segregation into Kirkendall voids. A plasmonic-based optical sensing effect is demonstrated for acetone and alcohol in the temperature range of 200–400 °C. Red- and blue-shifts in the position of the plasmon-resonance peak are monitored for different conditions of SnO2+Ag layer formation and gas exposure. A dynamical response of the SnO2 /Ag sensor to methane/air cycles is measured, and the sensitivity of the sensor as a function of the operation temperature and illumination is investigated. The concept of plasmonic-based SnO2 sensors is discussed having in mind two main phenomena: First, the ability of metallic nanoparticles to hold plasmonic resonances which depends on the dielectric properties of surrounding SnO2 layer and second, the possibility of space-limited heating of nanoparticles and the neighbouring region with light, and in this way to control the chemisorption of oxygen on the sensor’s surface.
Description: Нанотехнологии, наноструктуры, квантовые явления. Наноэлектроника. Приборы на квантовых эффектах
URI: http://elib.bsu.by/handle/123456789/215233
ISBN: 978-985-566-671-5
Sponsorship: Thanks due to A.Nylandsted Larsen for discussions and J.Chevalier for his assistance in magnetron sputtering. This research was supported by a Marie Curie Foundation (FP7-PEOPLE-2011-IIF) and by a grant T18P-190 of BRFFI (SR number 20181511).
Appears in Collections:2018. Материалы и структуры современной электроники

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