Title :
Nanostructured Molybdenum Oxide Gas Sensors
Author :
Li, Y.X. ; Yang, Q.B. ; Yu, X.F. ; Trinchi, A. ; Sadek, A.Z. ; Wlodarski, W. ; Kalantar-zadeh, K.
Author_Institution :
Chinese Acad. of Sci., Shanghai
Abstract :
In this paper, we present a surface acoustic wave (SAW) gas sensor based on nano-structured molybdenum oxide (MoOx) thin film. The film was deposited onto a 36deg YX LiTaO3 SAW transducer, with an operating frequency of approximately 103 MHz, by thermal evaporation. The nanostructured MoOx film consists of connected nanorods with diameters of less than 100 nm. We compared devices with MoOx deposited by RF sputtering and thermal evaporation and found those with evaporated films have response that are an order of magnitude larger.
Keywords :
gas sensors; molybdenum compounds; nanostructured materials; sputtered coatings; surface acoustic wave sensors; LiTaO3; MoO3; RF sputtering; frequency 103 MHz; molybdenum oxide; nanostructured gas sensor; surface acoustic wave gas sensor; thermal evaporation; Crystallization; Electrodes; Furnaces; Gas detectors; Gold; Powders; Sensor arrays; Sputtering; Surface acoustic waves; Temperature;
Conference_Titel :
Sensors, 2006. 5th IEEE Conference on
Conference_Location :
Daegu
Print_ISBN :
1-4244-0375-8
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.355764