▎ 摘　　要

This paper reports the characterizations and humidity sensing properties of Fe-GO. Thin films of GO and Fe-GO have been made by using the spin coating technique with 1500 rpm. After fabrication of thin film, variations in capacitance of the film with relative humidity (%RH) have been recorded. The thin film has been characterized by various techniques and a unique flower-like structure was found after the functionalization of GO with iron. The XRD analysis confirmed that the GO consists of a minimum of five layers of the graphene. BET surface analysis reveals that the synthesized Fe-GO is the mesoporous material partaking the surface area 45.23 m(2)/g together with a mean pore diameter of 32 nm. The sensitivity of the Fe-GO based sensor found as 14.12 pF/%RH for higher humidity (70-95%RH) region along with average sensitivity, response and recovery time as 5.18 pF/%RH, 31 s and 11 s respectively at room temperature.