Development Of Tungstent Oxide
【Chinatungsten Online News Net- Tungsten News】
Nowadays，a lot of volatile organic sensors have been developed and some are commercial available. However，the sensitiy of the sensors is still not at a satisfatory level. Much attention had been given to semiconductor gas sensors based on metal oxides due to its advantages of reliablity，low price ，structural simplicity and easy implementation. Semiconductor material such as tungstent oxide is particularly attractive because of its promissing electrical properties which enable it to be used as gas sensing applications. Various techniques have been used to prepare pure tungstent oxide films such as chemical vapor deposition，sol-gel，sputtering，screen-printing，and so on.
A few research groups had devoted thier invesigation to tungstent oxide for gas sensing application. They had been showing that WO3 has outstanding sensitive eproperties to mainly nitrogen oxides，ammonia and ozone.Most of them were focused on the NO gas sensing properties and study of sensing to other gases such VOC was rare.Nevertheless，research about the detection of using tungstent oxide is still being studied and exlioited at present time.
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