BPN971: Bright Mid-Wave Infrared Light-Emitting Diodes Based on Black Phosphorus


The mid-wave infrared (MWIR) wavelength range is valuable for a variety of vital applications including optical gas sensors for pollution monitoring, remote sensing, industrial process control, spectroscopy, optical alignment, and IR countermeasures. In the MWIR light source landscape, light-emitting diodes (LEDs) have the advantages of simple design, room-temperature operation, and low cost. However, the current state-of-the-art LEDs suffer from the drawback of low radiative efficiency due to the properties of the conventionally used III-V and II-VI semiconductors. We show that by using black phosphorus (bP) as the emitting layer to utilize its low Auger recombination at high carrier densities and direct bandgap in all thicknesses, bright and efficient electroluminescent MWIR light emitters can be achieved.

Publication date: 
August 26, 2021
Publication type: 
BSAC Project Materials (Current)
PREPUBLICATION DATA - ©University of California 2021

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