7.2.1 Influence of Sintering Temperatures on the Performance of ZnO-doped RuO2 Sensing Electrode of Electrochemical DO Sensor

Serge Zhuiykov & Eugene Kats
In this research planar dissolved oxygen (DO) sensors based on 20 mol % ZnO-doped RuO2 thickfilms were fabricated on alumina substrates over a range of sintering temperatures (STs) during the preparation. The STs were 750, 800, 850, and 900°C. Subsequent scanning electron microscope (SEM) images showed that different surface morphologies were achieved for the different STs. The relationship between DO and the sensor’s response at STs of 800 and 850°C was found to be relatively...