Hydrogen sensing properties of Pt/Lanthanum oxide- molybdenum oxide nanoplatelet/SiC based Schottky diode
Data(s) |
2012
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Resumo |
An investigation of the electrical and hydrogen sensing properties of a novel Schottky diode based on a nanostructured lanthanum oxide-molybdenum oxide compound is presented herein. Molybdenum oxide (MoO3) nanoplatelets were grown on SiC substrates via thermal evaporation which was then subsequently coated with lanthanum oxide (La2O3) by RF sputtering. The current-voltage characteristics and hydrogen sensing performance (change in barrier height and sensitivity as well as the dynamic response) were examined from 25 to 300°C. At 180°C, a voltage shift of 2.23V was measured from the sensor while exposed to 1% hydrogen gas under a 100 μA constant reverse bias current. The results indicate that the presence of a La2O3 thin layer substantially improves the hydrogen sensitivity of the MoO3 nanoplatelets. |
Formato |
application/pdf |
Identificador | |
Relação |
http://eprints.qut.edu.au/59552/1/Mahnaz_Shafiei-_IMCS_Proceedings_2012.pdf http://www.ama-science.org/home/details/1050 Shafiei, M., Yu, J., Chen, G., Lai, P., Motta, N., & Kalantar-zadeh, K. (2012) Hydrogen sensing properties of Pt/Lanthanum oxide- molybdenum oxide nanoplatelet/SiC based Schottky diode. In Proceedings of the 14th International Meeting on Chemical Sensors - IMCS 2012, Nürnberg/Nuremberg, Germany, pp. 802-805. |
Direitos |
Copyright 2012 please consult the authors |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty |
Palavras-Chave | #030107 Sensor Technology (Chemical aspects) #100708 Nanomaterials #100712 Nanoscale Characterisation #gas sensor #hydrogen #Schottky diode #nanostructures #lanthanum oxide-molybdenum oxide compound |
Tipo |
Conference Paper |