期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 187, 期 -, 页码 340-346出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.12.037
关键词
Carbon dioxide; Gas sensor; Stacked-type; USN; Small active area
资金
- IT R&D program of MKE/KEIT [10035570]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10035570] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A Li-ion based stacked-type potentiometric solid-state (S-PSS) sensor was designed and fabricated to detect carbon dioxide (CO2) on an alumina substrate in an indoor environment using mass production techniques. This design can reduce 70% of the active area compared to a planar-type potentiometric solid-state (P-PSS) sensor, as a reference material is not required. All deposition materials used in the sensor were screen-printed except for the electrolyte, which was deposited using thermal evaporation. The prepared materials were characterized through an X-ray diffraction analysis and scanning electron microscopy. The gas response characteristics of the S-PSS and P-PSS were examined a temperature range of 350-500 degrees C and for CO2 gas concentrations of between 16 and 5000 ppm. The S-PSS sensor showed a response of 40-90 mV/dec, which is similar to the P-PSS sensor performance at the same operating temperatures. The response and recovery times of the S-PSS were about 2 and 4 s, respectively. Repeated measurements showed a very good consistency of within 5 mV in a full measurement range. (C) 2012 Elsevier B. V. All rights reserved.
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