Title :
Semiconducting materials in the SnO2-CuO system [for gas sensors]
Author :
Scarlat, Oana ; Mihaiu, Susana ; Zaharescu, Maria
Author_Institution :
Inst. of Phys. Chem., Acad. of Sci., Bucharest, Romania
Abstract :
It is well known that SnO2 based ceramics may present very interesting properties with respect to their usefulness for gas detection. To establish the composition limits suitable for sensor applications as well as stable electrodes, a thorough study of the high temperature interactions between SnO2 and CuO was done. Non-isothermal and isothermal investigations were carried out in air, for temperatures up to 1250°C and 1000°C, respectively. According to their ceramic properties, the samples containing less than 20% CuO may be suitable for sensor applications for temperatures <1000°C
Keywords :
ceramics; copper compounds; densification; differential thermal analysis; gas sensors; phase equilibrium; porosity; powder technology; semiconductor materials; tin compounds; 1000 C; 1250 C; DTA; SnO2-CuO; ceramic properties; composition limits; gas detection materials; high temperature interactions; isothermal investigations; linear shrinkage; n-p junction; nonisothermal investigations; phase composition; phase equilibria; porosity; semiconducting materials; sensor applications; stable electrodes; Additives; Copper; Gas detectors; Gases; Platinum; Semiconductivity; Semiconductor device doping; Semiconductor diodes; Semiconductor materials; Temperature;
Conference_Titel :
Semiconductor Conference, 1999. CAS '99 Proceedings. 1999 International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-5139-8
DOI :
10.1109/SMICND.1999.810547
