Research Progress on Humidity-Sensing Properties of Cu-Based Humidity Sensors: A Review

Figure 9

(a) I–V characteristics of sample C measured at 25°C, 80%RH. (b) Sample impedance as a function of time, temperature with 5 V applied bias. (c) Hysteresis of CuO NW samples (1 V applied bias and 80°C). (d) Dynamic response of three humidity sensors at room temperature (5 V applied bias) [3].

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