Performance of a CO2 Impedimetric Sensor Prototype for Air Quality Monitoring

Sensors

Gemma Garc໚ Mandayo²  Jaime Herrán¹  Irene Castro-Hurtado² 

[1] CIDETEC, P. Miramón 196, 20009 San Sebastián, Spain; E-Mail:;CEIT and Tecnun, University of Navarra, Manuel de Lardizábal 15, 20018 San Sebastian, Spain; E-Mails:

关键词: carbon dioxide;    air quality;    thin film;    BaTiO₃-CuO;   

DOI  :  10.3390/s110505047

来源: mdpi

【 摘 要 】

Carbon dioxide detection is a relevant issue in many fields, and this work focuses on the use of a BaTiO₃-CuO sputtered thin film layer in a gas sensor prototype for air quality measurements. For this, a double side sensor was fabricated, with a Pt heater on one side and the sensing layer over the electrodes on the other side. The uniformity of the temperature on the sensing layer was tested and further tests to check its sensing performance were carried out. Humidity influence in the detection was found to be almost negligible within the usual range in air quality measurements and repeatability tests show satisfactory results for air quality control purposes.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.