Fig. 5: Visually transparent NIR-sensitive OPD array fabrication and characterization.
From: A touchless user interface based on a near-infrared-sensitive transparent optical imager
a, Photograph of the visually transparent NIR-sensitive OPD array held in front of a laptop display. b, Pixel current density as a function of light intensity (850 nm) of the visually transparent NIR-sensitive OPD array at –2 V. c, Histogram of the pixel current density of the visually transparent NIR-sensitive OPD array in the dark (grey) and under an 850 nm NIR light with an intensity of ~45 µW cm−2 (blue) at –2 V. The dark response was offset corrected. d, Transient photocurrent response of the OPD array at –2 V on 850 nm light pulses of 50 ms duration; the inset shows the transient photocurrent response of the OPD array at –2 V on 850 nm light pulses of 1 ms duration (1 kHz). Here 37% of the maximum signal is indicated in green.
