Nb2O5 Schottky based ethanol vapour sensors : effect of metallic catalysts
| Data(s) |
2014
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| Resumo |
The aim of this paper is to compare the performances of the highly porous Nb2O5 Schottky based sensors formed using different catalytic metals for ethanol vapour sensing. The fabricated sensors consist of a fairly ordered nano-vein like porous Nb2O5 prepared via an elevated temperature anodization method. Subsequently, Pt, Pd and Au were sputtered as both Schottky contacts and catalysts for the comparative studies. These metals are chosen as they have large work functions in comparison to the electron affinity of the anodized Nb2O5. It is demonstrated that the device based on Pd/Nb2O5 Schottky contact has the highest sensitivity amongst the developed sensors. The sensing behaviors were studied in terms of the Schottky barrier height variations and properties of the metal catalysts. |
| Identificador | |
| Publicador |
Elsevier |
| Relação |
DOI:10.1016/j.snb.2014.04.083 Ab Kadir, Rosmalini, Abdul Rani, Rozina, Sabirin Zoolfakar, Ahmad, Ou, Jian Zhen, Bhaskaran, Madhu, Sriram, Sharath, Shafiei, Mahnaz, Wlodarski, Wojtek B., & Kalantar-zadeh, Kourosh (2014) Nb2O5 Schottky based ethanol vapour sensors : effect of metallic catalysts. Sensors and Actuators B : Chemical, 202, pp. 74-82. |
| Fonte |
School of Chemistry, Physics & Mechanical Engineering; Institute for Future Environments; Science & Engineering Faculty |
| Palavras-Chave | #030107 Sensor Technology (Chemical aspects) #100700 NANOTECHNOLOGY #Niobium oxide, #anodization, #ethanol vapour, #gas sensor, #catalytic effect |
| Tipo |
Journal Article |
