NO2 Gas Sorption Studies of Ge33Se67 Films Using Quartz Crystal Microbalance

Velichka Georgieva; Maria Mitkova; Ping Chen; Dmitri Tenne; Kasandra Wolf; Victoria Gadjanova

doi:10.1016/j.matchemphys.2012.09.057

NO₂ Gas Sorption Studies of Ge₃₃Se₆₇ Films Using Quartz Crystal Microbalance

Velichka Georgieva, Maria Mitkova, Ping Chen, Dmitri Tenne, Kasandra Wolf, Victoria Gadjanova

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A study on the NO₂ gas sorption ability of amorphous Ge₃₃Se₆₇ coated quartz crystal microbalance (QCM) is presented. The thin films have been characterized before and after sorption/desorption processes of NO₂ by energy-dispersive X-ray spectroscopy (EDS), grazing angle X-ray diffraction (GAXRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and atom force microscopy (AFM) measurements. These studies indicated that physisorption occurs when NO₂ gas molecules are introduced into the chalcogenide film and the thin film composition or structure do not change. The mass loading due to NO₂ gas sorption was calculated by the resonator’s frequency shift. At the conditions of our experiment, up to 6.8 ng of the gas was sorbed into 200 nm thick Ge₃₃Se₆₇ film at 5000 ppm NO₂ concentration. It has been established that the process of gas molecules sorption is reversible.

Original language	American English
Journal	Materials Chemistry and Physics
DOIs	https://doi.org/10.1016/j.matchemphys.2012.09.057
State	Published - 14 Dec 2012

Keywords

Chalcogenides
thin films
X-ray photo-emission spectroscopy (XPS)
atomic force microscopy (AFM)

EGS Disciplines

Electrical and Computer Engineering

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10.1016/j.matchemphys.2012.09.057License: Unspecified

http://dx.doi.org/10.1016/j.matchemphys.2012.09.057

Cite this

@article{b4503f71877b44b4a404e12b42ed3fc0,

title = "NO2 Gas Sorption Studies of Ge33Se67 Films Using Quartz Crystal Microbalance",

abstract = "A study on the NO2 gas sorption ability of amorphous Ge33Se67 coated quartz crystal microbalance (QCM) is presented. The thin films have been characterized before and after sorption/desorption processes of NO2 by energy-dispersive X-ray spectroscopy (EDS), grazing angle X-ray diffraction (GAXRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and atom force microscopy (AFM) measurements. These studies indicated that physisorption occurs when NO2 gas molecules are introduced into the chalcogenide film and the thin film composition or structure do not change. The mass loading due to NO2 gas sorption was calculated by the resonator{\textquoteright}s frequency shift. At the conditions of our experiment, up to 6.8 ng of the gas was sorbed into 200 nm thick Ge33Se67 film at 5000 ppm NO2 concentration. It has been established that the process of gas molecules sorption is reversible.",

keywords = "Chalcogenides, thin films, X-ray photo-emission spectroscopy (XPS), atomic force microscopy (AFM)",

author = "Velichka Georgieva and Maria Mitkova and Ping Chen and Dmitri Tenne and Kasandra Wolf and Victoria Gadjanova",

year = "2012",

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doi = "10.1016/j.matchemphys.2012.09.057",

language = "American English",

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TY - JOUR

T1 - NO2 Gas Sorption Studies of Ge33Se67 Films Using Quartz Crystal Microbalance

AU - Georgieva, Velichka

AU - Mitkova, Maria

AU - Chen, Ping

AU - Tenne, Dmitri

AU - Wolf, Kasandra

AU - Gadjanova, Victoria

PY - 2012/12/14

Y1 - 2012/12/14

N2 - A study on the NO2 gas sorption ability of amorphous Ge33Se67 coated quartz crystal microbalance (QCM) is presented. The thin films have been characterized before and after sorption/desorption processes of NO2 by energy-dispersive X-ray spectroscopy (EDS), grazing angle X-ray diffraction (GAXRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and atom force microscopy (AFM) measurements. These studies indicated that physisorption occurs when NO2 gas molecules are introduced into the chalcogenide film and the thin film composition or structure do not change. The mass loading due to NO2 gas sorption was calculated by the resonator’s frequency shift. At the conditions of our experiment, up to 6.8 ng of the gas was sorbed into 200 nm thick Ge33Se67 film at 5000 ppm NO2 concentration. It has been established that the process of gas molecules sorption is reversible.

AB - A study on the NO2 gas sorption ability of amorphous Ge33Se67 coated quartz crystal microbalance (QCM) is presented. The thin films have been characterized before and after sorption/desorption processes of NO2 by energy-dispersive X-ray spectroscopy (EDS), grazing angle X-ray diffraction (GAXRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and atom force microscopy (AFM) measurements. These studies indicated that physisorption occurs when NO2 gas molecules are introduced into the chalcogenide film and the thin film composition or structure do not change. The mass loading due to NO2 gas sorption was calculated by the resonator’s frequency shift. At the conditions of our experiment, up to 6.8 ng of the gas was sorbed into 200 nm thick Ge33Se67 film at 5000 ppm NO2 concentration. It has been established that the process of gas molecules sorption is reversible.

KW - Chalcogenides

KW - thin films

KW - X-ray photo-emission spectroscopy (XPS)

KW - atomic force microscopy (AFM)

UR - https://scholarworks.boisestate.edu/electrical_facpubs/216

UR - http://dx.doi.org/10.1016/j.matchemphys.2012.09.057

U2 - 10.1016/j.matchemphys.2012.09.057

DO - 10.1016/j.matchemphys.2012.09.057

M3 - Article

SN - 0254-0584

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

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