Title :
Formadelyde-sensing properties of reduced graphene oxide by layer-by-layer self-assemble method
Author :
Xian Li ; Dan Xie ; Ruixuan Dai ; Jianglong Xu ; Yadong Jiang
Author_Institution :
Tsinghua Nat. Lab. for Inf. Sci. & Technol. (TNList), Tsinghua Univ., Beijing, China
Abstract :
Formaldehyde (HCHO), a colorless and pungent-smelling gas, has been confirmed be a huge threat to people´ health. The detection of HCHO is necessary and important at room temperature. Graphene based materials have been widely used in gas sensor field because of their atom-thick two-dimensional structures, high conductivity and large specific surface areas. In this paper, graphene oxide (GO) film was deposited on interdigital electrodes by layer-by-layer self-assemble (LBL SA) method. The fabricated GO film was then annealed at 300°C for 10 min and reduced GO (rGO) film was gained. The fabricated rGO sensitive film exhibited fast response and good response/recovery properties to HCHO at room temperature. And the response time was about 16s to 10ppm HCHO.
Keywords :
annealing; assembling; gas sensors; graphene; organic compounds; thin film sensors; CO; HCHO detection; LBL SA method; annealing; formadelyde sensing property; gas sensor; interdigital electrodes; layer-by-Iayer self-assemble method; rGO sensitive film fabrication; reduced graphene oxide film; temperature 300 degC; time 10 min; Annealing; Films; Monitoring; Surface treatment; Temperature measurement; Temperature sensors; formadelyde; layer-by-layer self-assemble(LBL SA); reduced graphene oxide(rGO); sensor;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061274
