In:
Luminescence, Wiley, Vol. 38, No. 7 ( 2023-07), p. 1244-1256
Abstract:
This work reports the measurement of impedance variations under various humidity conditions at frequency ranges between 100 Hz and 5 MHz. An electrochemical polymerization process has been used in the synthesis including varying the mass ratios of graphene oxide (GO) in polyaniline. An electrochemical deposition method has been used to produce a sample film on an indium tin oxide glass slide. The percentage relative humidity (RH%) of the samples has been estimated to be 20–90%. Impedance and humidity had an inverse relationship, i.e. the impedance value decreased with an increase in humidity. In contrast with platinum capacitive humidity sensors (HS), the GO‐based HS had a sensitivity of 75–99%, which was ~10‐fold more than that of traditional sensors. With three different parameter weight % of GO, the frequency range have been 100 Hz to 5 MHz and RH% has been found to 20–90%. The HS showed a fast response and recovery time. Therefore, GO appears to be a useful material for building HS with high sensitivity for a comprehensive approach.
Type of Medium:
Online Resource
ISSN:
1522-7235
,
1522-7243
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2001819-8
SSG:
12
Permalink