YANG Chen,GU Weiyuan,YU Shuguo,ZHANG Hongyan.Effect of surfactant on performance of ZnO humidity sensor[J].Optoelectronics Letters,2021,17(12):751-756 Effect of surfactant on performance of ZnO humidity sensor Author Name Affiliation YANG Chen  Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830046, China School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China  GU Weiyuan  Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830046, China School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China  YU Shuguo  Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830046, China  ZHANG Hongyan  Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830046, China School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China  Abstract:       In this study, using surfactant monoethanolamine (MEA), zinc oxide (ZnO)-MEA humidity sensor based on ZnO was successfully prepared by hydrothermal method. MEA makes the surface of the ZnO-MEA have more oxygen vacancy and hydrophilic functional groups, which improves the performance of ZnO humidity sensor. ZnO-MEA achieved a change of 4 orders of magnitude at room temperature in the relative humidity (RH) from 11% to 95%, and it shows better linearity, shorter response/recovery time (20 s/15.9 s), smaller humidity lag and long-term stability. In addition, the distribution of ZnO-MEA particles is more uniform and provides more active sites for adsorption of water molecules to enhance humidity sensing performance. Hits: 555 Download times: 5 This work has been supported by the National Science Foundation of Xinjiang Science and Technology Project (No.2019D01C036). View Full Text    Download reader