Year: 2025
Type: article
Abstract: Spin light-emitting diodes (spin-LEDs), which converts carrier spin information to optical polarization, are important for modern display application and future technologies including spin-based electronic circuits and quantum information science. Spin-LEDs operate through spin-polarized carrier injection, directly converting spin angular momentum into photon helicity. Recent advances in materials and mechanism understanding have significantly improved spin injection efficiency and device performance. This review discusses the fundamental principles and operation mechanisms of spin-LEDs, where we examine conventional spin injection approaches and their constraints. We then highlight the emerging role of chiral-induced spin selectivity (CISS) in spin-LEDs, exploring how this novel mechanism could enhance circularly polarized electroluminescence efficiency and enable new device architectures. Finally, we provide perspectives on current challenges.
Source: npj Spintronics
Authors: Kin Ting Chang, Wenfei Liang, Yuan Lu, Haipeng Lu
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,190
Awards: Electrical control of spin injection in spin-LEDs via spin-transfer effect without magnetic field, Electrical control of spin-injection in spin light emitting diodes and lasers via spin-orbit torque effect, Extreme Potential Photocatalysis Enabled by Spin-Exchange Auger Processes in Doped Quantum Dots, G7139599790
OpenAlex ID: W4415791096