Answers are grounded in this paper and cite their sources.
Gas sensitivity of CuO/ZnO hetero-contact was investigated at 160–340 °C. The gas sensitivity changed not only with the kind of gases and measuring temperature but with the voltage applied to the hetero-contact. Very high sensitivity and selectivity for CO gas was observed at 260 °C under the applied voltage of 0.1–0.9 V.
No takes yet. Share an insight, caveat, or question.
Nakamura et al. (1986) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: