The morphological changes induced in (RuPc)(2) gas sensing thin films by hydration and de-hydration processes were investigated. Prior to this study a preliminary characterization was performed by conductivity measurements upon exposure to NO2 gas fluxes, to verify the electrical sensing response of the films. This response was correlated to the bulk morphological modification of the films. Subsequently, the effect of external moisture on the morphological stability of the films was addressed. This morphological characterization of the films was performed by using the energy dispersive X-ray reflectivity (EDXR) and atomic force microscopy (AFM) techniques, both ex situ and in situ, i.e. under operating conditions, during exposure of these films to 100% of relative humidity. The measurements allowed an accurate observation of both the surface morphology(i.e. its roughness obtained independently by EDXR and AFM). Moreover bulk evolution of the films was obtained by in situ EDXR and the morphological changes allowed to retrieve information on the water uptake dynamics. Moreover, the reversibility of the water/film interaction was studied and correlated to the sensing properties of the (RuPc)(2). (C) 2008 Elsevier B.V. All rights reserved.

Gas sensing (RuPc)(2) thin films: Electrical response to NO2 gas and morphological changes induced by external moisture / Amanda, Generosi; Barbara, Paci; Valerio Rossi, Albertini; Renato, Generosi; Anna Maria, Paoletti; Gianna, Pennesi; Gentilina, Rossi; Marco, Fosca; Caminiti, Ruggero. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - 134:2(2008), pp. 396-402. [10.1016/j.snb.2008.05.023]

Gas sensing (RuPc)(2) thin films: Electrical response to NO2 gas and morphological changes induced by external moisture

CAMINITI, Ruggero
2008

Abstract

The morphological changes induced in (RuPc)(2) gas sensing thin films by hydration and de-hydration processes were investigated. Prior to this study a preliminary characterization was performed by conductivity measurements upon exposure to NO2 gas fluxes, to verify the electrical sensing response of the films. This response was correlated to the bulk morphological modification of the films. Subsequently, the effect of external moisture on the morphological stability of the films was addressed. This morphological characterization of the films was performed by using the energy dispersive X-ray reflectivity (EDXR) and atomic force microscopy (AFM) techniques, both ex situ and in situ, i.e. under operating conditions, during exposure of these films to 100% of relative humidity. The measurements allowed an accurate observation of both the surface morphology(i.e. its roughness obtained independently by EDXR and AFM). Moreover bulk evolution of the films was obtained by in situ EDXR and the morphological changes allowed to retrieve information on the water uptake dynamics. Moreover, the reversibility of the water/film interaction was studied and correlated to the sensing properties of the (RuPc)(2). (C) 2008 Elsevier B.V. All rights reserved.
2008
(rupc)(2); (rupc)2; diffraction; e d x d; edxr; gas sensors; morphology; reflectometry
01 Pubblicazione su rivista::01a Articolo in rivista
Gas sensing (RuPc)(2) thin films: Electrical response to NO2 gas and morphological changes induced by external moisture / Amanda, Generosi; Barbara, Paci; Valerio Rossi, Albertini; Renato, Generosi; Anna Maria, Paoletti; Gianna, Pennesi; Gentilina, Rossi; Marco, Fosca; Caminiti, Ruggero. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - 134:2(2008), pp. 396-402. [10.1016/j.snb.2008.05.023]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/363607
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