Room-temperature spin injection across a chiral perovskite/III-V interface.

Autor: Hautzinger MP; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Pan X; Department of Physics & Astronomy, University of Utah, Salt Lake City, UT, USA., Hayden SC; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Ye JY; National Renewable Energy Laboratory (NREL), Golden, CO, USA.; Department of Physics, Colorado School of Mines, Golden, CO, USA., Jiang Q; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Wilson MJ; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Phillips AJ; National Renewable Energy Laboratory (NREL), Golden, CO, USA.; Department of Physics, Colorado School of Mines, Golden, CO, USA., Dong Y; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Raulerson EK; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Leahy IA; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Jiang CS; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Blackburn JL; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Luther JM; National Renewable Energy Laboratory (NREL), Golden, CO, USA.; Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, USA., Lu Y; Institut Jean Lamour, Université de Lorraine, CNRS, UMR 7198, Nancy, France., Jungjohann K; National Renewable Energy Laboratory (NREL), Golden, CO, USA., Vardeny ZV; Department of Physics & Astronomy, University of Utah, Salt Lake City, UT, USA., Berry JJ; National Renewable Energy Laboratory (NREL), Golden, CO, USA.; Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, USA.; Department of Physics, University of Colorado Boulder, Boulder, CO, USA., Alberi K; National Renewable Energy Laboratory (NREL), Golden, CO, USA.; Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, USA., Beard MC; National Renewable Energy Laboratory (NREL), Golden, CO, USA. matt.beard@nrel.gov.; Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, USA. matt.beard@nrel.gov.
Jazyk: angličtina
Zdroj: Nature [Nature] 2024 Jul; Vol. 631 (8020), pp. 307-312. Date of Electronic Publication: 2024 Jun 19.
DOI: 10.1038/s41586-024-07560-4
Abstrakt: Spin accumulation in semiconductor structures at room temperature and without magnetic fields is key to enable a broader range of optoelectronic functionality 1 . Current efforts are limited owing to inherent inefficiencies associated with spin injection across semiconductor interfaces 2 . Here we demonstrate spin injection across chiral halide perovskite/III-V interfaces achieving spin accumulation in a standard semiconductor III-V (Al x Ga 1-x ) 0.5 In 0.5 P multiple quantum well light-emitting diode. The spin accumulation in the multiple quantum well is detected through emission of circularly polarized light with a degree of polarization of up to 15 ± 4%. The chiral perovskite/III-V interface was characterized with X-ray photoelectron spectroscopy, cross-sectional scanning Kelvin probe force microscopy and cross-sectional transmission electron microscopy imaging, showing a clean semiconductor/semiconductor interface at which the Fermi level can equilibrate. These findings demonstrate that chiral perovskite semiconductors can transform well-developed semiconductor platforms into ones that can also control spin.
(© 2024. The Author(s), under exclusive licence to Springer Nature Limited.)
Databáze: MEDLINE
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