Fig. 3: Performance characteristics of different organic-based hydrogen sensors under various conditions.
From: A robust organic hydrogen sensor for distributed monitoring applications
a, H2 concentration-dependent device responsivity of the organic materials DPP-DTT, C16-IDTBT, P3HT, TIPS-pentacene and PTAA. The error bars define the standard deviation of the mean responsivity by averaging over three different devices for each material. b, Temperature-dependent responsivity of the DPP-DTT H2 sensor. The error bars indicate the standard deviation in the responsivity from the mean from four different sets of data taken from a single device. c, Real-time current as a function of H2 concentration from 0 to 1,000 ppm at 120 °C for an applied bias of 1.0 V. d, Change in the responsivity of the DPP-DTT sensor in the presence of individual gases measured at a constant bias of 0.5 V and a concentration of 1% (10,000 ppm). e, Hydrogen concentration-dependent current of the DPP-DTT device, measured under various humidity conditions (15%, 50% and 80% RH). The error bars denote the standard deviation in the device current from the mean from four different sets of data taken from a single device. f, Real-time current response of the DPP-DTT device measured at various applied bias conditions (0.2 to 1.0 V in 0.2 V increments), as a function of switching the H2 concentration from 0 to 1,000 ppm at an 80% RH. Except for d, synthetic air was the carrier gas in all experiments, as outlined in Methods. EtOH, ethanol; MeOH, methanol; Me2CO, acetone; Tol, toluene.
