Fig. 3: Lifetime measurement of BP LED at RT.
From: Long operating lifetime mid-infrared LEDs based on black phosphorus
a Time dependent EL intensity curves of BP LEDs with different conditions: bare, N2 sealed, with Al2O3 passivation, and packaged (Al2O3 and N2). Normalized EL intensity (L/L0) is obtained by dividing integrated EL intensity by initial intensity. b Time evolution of EL spectrum from BP. Input current density was fixed at 75 A/cm2. All LED measurements were performed at RT in an ambient lab condition with a relative humidity of 40 ± 5%.
