Abstract
Transparent free-standing films of graphene oxide (GO) have been prepared by a dried foam method using different oxygen-containing GO sheets as feedstocks. Then a humidity sensor was fabricated using the films as transparent and flexible sensing materials. The impedances of the films were measured at different relative humidity, and the results revealed that the relationship between impedance and relative humidity depends on both the oxygen content and the thickness of the GO films, and a linear relationship corresponds to an ultrathin film (in thickness of about 100nm) while a non-linear relationship for thick films. In addition, the thin film can also show a dynamic switch behavior for humidity sensing. The transparent free-standing GO film has potential application working as an optical window combing the humidity sensing property.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.