Park, Jae-Hwan Cho, Mun-Seong Lim, Donggun Park, Jae-Gwan 2024-01-20T08:35:00Z 2024-01-20T08:35:00Z 2021-09-02 2014-10 1533-4880 https://pubs.kist.re.kr/handle/201004/126295 The NO2 gas sensor based on SnO2 semiconducting nanowires workable at room temperature has been investigated. The network structure of SnO2 nanowires was fabricated on the electrodes by a simple thermal evaporation process from Sn metal powders and oxygen gas. The diameter of the nanowires was 20 similar to 60 nm depending on the processing conditions. When the concentration of NO2 was 10 ppm, the sensitivity of 43, the response time of 38 s, and the recovery time of 25 s were observed at the operating temperature of 200 degrees C. In particular, the operating temperature of the sensor could be decreased down below 50 degrees C by controlling the properties of the nanowires and the structures of the electrodes. The sensitivities were 10 similar to 15 when the NO2 concentrations were 10 similar to 50 ppm at the operating temperature of 50 degrees C. English AMER SCIENTIFIC PUBLISHERS OXIDE NANOSENSORS SnO2 Nanowire Gas Sensor Operating at Room Temperature Article 10.1166/jnn.2014.9403 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.10, pp.8038 - 8042 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 14 10 8038 8042 scie scopus 000336494500124 2-s2.0-84987932353 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article OXIDE NANOSENSORS SnO2 Nanowires Gas Sensor Room Temperature NO2