Journal ArticleDOI
Metal oxide-based gas sensor research: How to?
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TLDR
In this article, the state of the art in the field of experimental techniques possible to be applied to the study of conductometric gas sensors based on semiconducting metal oxides is reviewed.Abstract:
The paper critically reviews the state of the art in the field of experimental techniques possible to be applied to the study of conductometric gas sensors based on semiconducting metal oxides. The used assessment criteria are subordinated to the proposed R&D approach, which focuses on the study, and subsequent modelling, of sensors’ performance in realistic operation conditions by means of a combination of phenomenological and spectroscopic techniques. With this viewpoint, the paper presents both the to-date achievements and shortcomings of different experimental techniques, describes – by using selected examples – how the proposed approach can be used and proposes a set of objectives for the near future.read more
Citations
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Journal ArticleDOI
Insight into the Role of Oxygen Diffusion in the Sensing Mechanisms of SnO2 Nanowires
Francisco Hernandez-Ramirez,Joan Daniel Prades,Albert Tarancón,Sven Barth,Olga Casals,R. Jimenez-Diaz,Eva Pellicer,Eva Pellicer,J. Rodriguez,Joan Ramon Morante,Miguel Angel Juli,Sanjay Mathur,Sanjay Mathur,Albert Romano-Rodriguez +13 more
TL;DR: In this paper, the role of oxygen diffusion in the response of individual SnO2 nanowires to this gas is studied, and the model correctly describes the experimentally measured dependence of the nanowire resistance with oxygen partial pressure, and it can be applied to the characterization of other metal oxide materials.
Journal ArticleDOI
Microstructure, electrical and humidity sensor properties of electrospun NiO–SnO2 nanofibers
Petronela Pascariu,Anton Airinei,Niculae Olaru,Iulian Petrila,Valentin Nica,Liviu Sacarescu,Florin Tudorache +6 more
TL;DR: In this article, NiO-SnO 2 ceramic nanofibers have been fabricated by electrospinning technique and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), TEM and fluorescence spectra.
Journal ArticleDOI
Selective H2S sensing characteristics of CuO modified WO3 thin films
Niranjan S. Ramgir,C. P. Goyal,Preetam K. Sharma,U. K. Goutam,Shovit Bhattacharya,Niyanta Datta,Manmeet Kaur,Anil K. Debnath,Dinesh K. Aswal,S.K. Gupta +9 more
TL;DR: An H 2 S sensor based on randomly distributed nano p-n junction between CuO and WO 3 has been demonstrated in this paper, which is attributed to the formation of random nano p−n junctions distributed over the surface of the sensor film and the unique interaction of CuO with H 2 s.
Journal ArticleDOI
The structure and behavior of platinum in SnO2-based sensors under working conditions.
Michael Hübner,Dorota Koziej,Dorota Koziej,Matthias Bauer,Nicolae Barsan,Kristina O. Kvashnina,Marta D. Rossell,Udo Weimar,Jan-Dierk Grunwaldt +8 more
Journal ArticleDOI
CdO activated Sn-doped ZnO for highly sensitive, selective and stable formaldehyde sensor
TL;DR: In this article, the formaldehyde gas sensing properties are evaluated and the results show that 2.2 mol% Sn dopant can increase the response of ZnO by more than 2 folds, while other dopants increase little response or even decrease response.
References
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Book
The surface science of metal oxides
TL;DR: In this paper, the electronic structure of transition metal-oxide surfaces is described. But the electronic structures of non-transition metaloxide surfaces have not been discussed, and they are not considered in this paper.
Journal ArticleDOI
Conduction Model of Metal Oxide Gas Sensors
Nicolae Barsan,Udo Weimar +1 more
TL;DR: In this article, the authors provide a frame model that deals with all contributions involved in conduction within a real world sensor, and then summarize the contributions together with their interactions in a general applicable model for real world gas sensors.
Journal ArticleDOI
The surface and materials science of tin oxide
Matthias Batzill,Ulrike Diebold +1 more
TL;DR: A review of surface science studies of single crystal surfaces, but selected studies on powder and polycrystalline films are also incorporated in order to provide connecting points between surface sciences studies with the broader field of materials science of tin oxide as discussed by the authors.