The Effect of Sheet Resistivity and Storage Conditions on Sensitivity of RuO2 Based pH Sensors
作者： Libu Manjakkal , Katarina Cvejin , Jan Kulawik , Krzysztof Zaraska , Dorota Szwagierczak
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.605.457
关键词: Electrode 、 Analytical chemistry 、 Pollution 、 Optoelectronics 、 Semiconductor 、 Materials science 、 Screen printing 、 Electromotive force 、 Hydrogen 、 Sheet resistance 、 Environmental pollution
摘要: The increasing fresh water deficiency due to environmental pollution demands accurate, reliable and highly sensitive sensors for online monitoring of pollution. Solid state are helpful fabricating implementing low cost wireless In determination, the measurement pH plays an important role. Among semiconductor materials RuO2 shows good sensitivity hydrogen ions, high accuracy resistance interferences caused by other dissolved ions. this work, thick film based electrodes fabricated screen printing. were characterized electromotive force measurements, SEM, optical microscopy EDS analysis. effects sheet resistivity material storage conditions discussed. sensor exhibits a 60 mV/pH in wide range 2 10. obtained response was very close theoretical Nernstian behavior. best performance attained from 10 kΩ/sq. paste stored at 25 days.
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