Reversible Transformation between Cu_2O and CuO by Ambient Gas Heat Treatment
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概要
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Cu_2O and CuO are typical p-type semiconducting oxides and thus promising for gas sensors. However, heat-treatment necessary for sintering Cu_2O powder into porous thick films in air changes Cu_2O to CuO. As a result, it is not possible to prepare Cu_2O sensors. To this connection the reversible transformation between Cu_2O and CuO is examined. It turns out that CuO can be brought back to Cu_2O by holding CuO in an ambient of ethanol-added air at 330℃ for 1 hr. However, the Cu_2O sample thus obtained is found to be rather insensitive to reductive gases. The CuO samples prepared by sintering Cu_2O in air are satisfactorily potential as p-type semiconducting oxide sensors.
- 福井工業大学の論文
- 2004-03-20
著者
-
Shirafuji Junji
Department Of Electrical And Electronic Engineering
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Tamura Norimichi
Graduate student
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