Abstract:
The stability of electrical conductivity of SnO$_2$-based metal-oxide gas sensors fabricated by sol-gel technology in laboratory air has been investigated. Various oxides were used as modifiers: ZnO, BaO, CuO, NiO, V$_2$O$_5$, MoO$_3$. Measurements of electrical conductivity of semiconductor gas sensors were also carried out when given concentrations of acetone vapor were applied to their surface.
Keywords:electrical conductivity, adsorbtion, gas sensor, stability, sensitivity.