Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode

Kim, Young-Hoon; Zhai, Yaxin; Lu, Haipeng; Pan, Xin; Xiao, Chuanxiao; Gaulding, E. Ashley; Harvey, Steven P.; Berry, Joseph J.; Vardeny, Zeev Valy; Luther, Joseph M.; Beard, Matthew C.

doi:10.1126/science.abf5291

Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode

Journal Article · Thu Mar 11 00:00:00 EST 2021 · Science

DOI:https://doi.org/10.1126/science.abf5291· OSTI ID:1770504

^[1]; ^[1]; ^[1]; Pan, Xin ^[2]; Xiao, Chuanxiao ^[1]; ^[1]; ^[1]; ^[1]; ^[2]; ^[1]; ^[1]

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO 80401, USA.
Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA.

In traditional optoelectronic approaches, control over spin, charge, and light requires the use of both electrical and magnetic fields. In a spin-polarized light-emitting diode (spin-LED), charges are injected, and circularly polarized light is emitted from spin-polarized carrier pairs. Typically, the injection of carriers occurs with the application of an electric field, whereas spin polarization can be achieved using an applied magnetic field or polarized ferromagnetic contacts. We used chiral-induced spin selectivity (CISS) to produce spin-polarized carriers and demonstrate a spin-LED that operates at room temperature without magnetic fields or ferromagnetic contacts. The CISS layer consists of oriented, self-assembled small chiral molecules within a layered organic-inorganic metal-halide hybrid semiconductor framework. The spin-LED achieves ±2.6% circularly polarized electroluminescence at room temperature.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1770504

Alternate ID(s):: OSTI ID: 1774849

Report Number(s):: NREL/JA--5900-78453; /sci/371/6534/1129.atom

Journal Information:: Science, Journal Name: Science Journal Issue: 6534 Vol. 371; ISSN 0036-8075

Publisher:: American Association for the Advancement of Science (AAAS)Copyright Statement

Country of Publication:: United States

Language:: English

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