Zero dark leakage current single-walled carbon nanotube diodes

We describemeasurements of diodeleakage currents in p-n and p-i-n diodes formed along individualsingle-walled carbon nanotubes(SWNTs) in the ranges well below the direct detection limit. When cooled, these diodes exhibitleakage currents down in the range of 10−25 A or equivalent to 1 electron/19 days. To verify ourmeasurement of such lowleakage currents, we use thephotovoltaic property under varying temperatures to extract the dark diodeleakage currents. Sincenanotubes are sensitive in the near IR spectrum, these diodes show promise as zero dark currentnoise, near-infrared detectors.

Source: Applied Physics Letters - November 16, 2016 Category: Physics Authors: Prathamesh Dhakras and Ji Ung Lee Source Type: research