期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 139, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2021.106329
关键词
ZnO nanorods; Gd doping; Chemical sensors
类别
资金
- TUBITAK (The Scientific and Technological Research Council of Turkey) [114Z572]
- Cankr Karatekin University [FF28015B12]
The study demonstrated that Gd(III)-doped ZnO nanorods show increased response to CO2 gas with higher doping concentration and temperature, with the optimum operating temperature determined as 200 degrees C. The 3 mol % doped sample exhibited a high sensitivity to CO2 gas, with a response rate of about 85% at this temperature, and maintained response stability against CO2, acetone, and ethanol gases for 30 days.
This study reports the production of Gd(III)-doped ZnO nanorods on the glass substrate via spin coating and hydrothermal routes, respectively, and investigation of CO2 gas sensing properties. It was determined that the response of the ZnO nanorods to CO2 gas under the open-air atmosphere increases with doping concentration (up to 3 mol %) and temperature. The optimum operating temperature of the sensors was determined as 200 degrees C, and the response of the 3 mol % doped sample was about 85% at this temperature. The response and recovery times to 100 ppm concentration of CO2 gas were determined as 30 and 25 s, respectively. The 3 mol % Gd(III)-doped ZnO nanorods sensor has quite high sensitivities for CO2 gas compared to acetone and ethanol. In addition, it was observed that the 3 mol % Gd(III)-doped ZnO nanorod sensor maintained its response stability against CO2, acetone, and ethanol gases for 30 days.
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