Long operating lifetime mid-infrared LEDs based on black phosphorus.

ABSTRACT: Black phosphorus (BP) is a narrow bandgap layered semiconductor promising for mid-infrared optoelectronic applications. BP-based devices have been shown to surpass state-of-the-art mid-infrared detectors and light-emitting diodes (LEDs) in terms of performance. Despite their device advantages, the material's inherent instability in the air could hinder its use in practical optoelectronic applications. Here, we investigated the impact of passivation on the device lifetime of BP LEDs, which deteriorate in a matter of seconds without using passivation. The lifetime is significantly extended with an Al₂O₃ passivation layer and nitrogen packaging via atomic layer deposition and ultra-violet curable resin sealing. The operational lifetime (half-life) at room temperature is

SUBMITTER: Higashitarumizu N 

PROVIDER: S-EPMC10415361 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature