Figure 2 | Scientific Reports

Figure 2

From: Solution-Processed Nanoparticle Super-Float-Gated Organic Field-Effect Transistor as Un-cooled Ultraviolet and Infrared Photon Counter

Figure 2

(a) The transfer characteristics of the NPSGOFET photodetector in the dark (red) and under UV illumination (blue); (b) detecting and resetting of the NPSGOFET detectors under UV pulses and positive gate voltage pulses, respectively; (c) exponential channel current decay of the NPSGOFET devices under different UV light intensities; (d) the channel current decay rate as a function of the incident light intensity ranging from 2.6 photons/μm2s to 3.5 × 104 photons/μm2s; (e) decay rate of the NPSGOFET photodetector at a weak UV power intensity of 2.6 photons/μm2s and 16 photons/μm2s, respectively; the histograms of the current decay rate at the corresponding UV light intensities are also shown; (f) continuous photon counting of the NPSGOFET photodetector under UV (193 nm) pulses with a pulse width of 12 nanosecond and interval of 200 ms. The response speed was limited by the current measurement setup.

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