Revolutionizing Optoelectronics: Spin Control in LEDs

• Revolutionizing optoelectronics: Researchers integrate chiral perovskite with III-V semiconductor to control electron spin in LEDs, paving the way for faster, more efficient technology.

Researchers from NREL, University of Utah, Université de Lorraine CNRS, and University of Colorado Boulder have demonstrated spin injection across chiral halide perovskite/III–V interfaces. They have integrated a III-V semiconductor optoelectronic structure with a chiral halide perovskite semiconductor, transforming a commercial LED into one that controls the spin of electrons. This breakthrough could revolutionize modern optoelectronics, including LEDs, solar cells, and telecommunications lasers, by eliminating the need for subzero temperatures and increasing data processing speeds while decreasing power consumption.

The team's work, published in a newly released study, focuses on controlling the interconversion of charge, spin, and light using carefully designed chemical systems. By incorporating chiral perovskites, they were able to emit polarized light at room temperature without the use of magnetic fields. The addition of the III-V semiconductor boosted the degree of polarization to about 15%, indicating a significant advancement in spin functionality within a traditional LED platform.

How could spin injection in chiral perovskite/III-V interfaces revolutionize optoelectronics?

• Spin injection in chiral perovskite/III-V interfaces could revolutionize optoelectronics by enabling the control of electron spin in commercial LEDs.
• This breakthrough eliminates the need for subzero temperatures, leading to more energy-efficient optoelectronic devices.
• The integration of chiral halide perovskite and III-V semiconductor structures allows for the emission of polarized light at room temperature without the use of magnetic fields.
• The degree of polarization achieved with this technology is around 15%, indicating a significant advancement in spin functionality within traditional LED platforms.
• This advancement could have implications for the development of more efficient solar cells, telecommunications lasers, and other optoelectronic devices.