Figure 4 | Scientific Reports

Figure 4

From: Green preparation of reduced graphene oxide for sensing and energy storage applications

Figure 4

Gas sensor application of CA-rGO.

(a) Schematic diagram of the rGO-based gas sensor device. (b) SEM image of 24h-CA-rGO sheets bridging a pair of gold sensor electrodes. (c) Direct current measurement results of 24h-CA-rGO with drain-source potential ramping from -1.0 to +1.0 V. (d) FET results (Vd = 0.5 V) of the 24h-CA-rGO. Dynamic gas sensing results of the 24h-CA-rGO gas sensors for (e) 100 ppm NO2 and (f) 1% NH3 tested under room temperature.

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