Table 7.

Performance of the selected graphene-based humidity sensors with superior characteristics.

Material	Type	Response	Selectivity	Humidity Range	Limit of Detection	Response Time	Recovery Time	Stability	Ref.
GO	Impedance	~102 (1)	—	10–90%	10% (2)	~30 ms	~30 ms	72h	[74]
Ultralarge GO	Conductance	4339 ± 433	—	7–100%	7% (2)	0.2 s	0.7 s	5 days	[121]
rGO/GO/rGO	Voltage	142.5	High (H2, hexane, ethanol)	6.3–100%	6.3% (2)	1.9 s	3.9 s	> 1 year	[131]
rGO	Impedance	~103 (1)	—	11–95%	11% (2)	1 s	24 s	30 days	[142]
Graphene/methyl red	Resistive Capacitive	96.36% (R) 2869500% (C)	—	5–95%	5% (2)	0.251 s	0.35 s	—	[161]
PDA/rGO	Resistive	20000	—	0–97%	10% (1)	20 ms	17 ms	60 days	[176]
rGO/MoS2	Resistive	2494.25%	High (H2, CH3COCH3, NO2, NH3)	5–85%	5% (2)	6.3 s	30.8 s	20 months	[199]
PDDA/rGO PSSNa/rGO	Impedance	1000% (0.2–30%) 300% (0.2–30%)	—	0.2–90%	0.2%	16 s 38 s	24 s 70 s	—	[171]
QC-P4VP/rGO	Impedance	500% (0.18–2.1%)	—	0.18–98%	0.18%	21 s	78 s	—	[172]

⁽¹⁾ Estimated from the response curve; ⁽²⁾ the lowest RH in the sensing measurements.