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

doi:10.1126/science.abf5291

GSTDTAP > 气候变化

DOI	10.1126/science.abf5291
	Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode
	Young-Hoon Kim; Yaxin Zhai; Haipeng Lu; Xin Pan; Chuanxiao Xiao; E. Ashley Gaulding; Steven P. Harvey; Joseph J. Berry; Zeev Valy Vardeny; Joseph M. Luther; Matthew C. Beard
	2021-03-12
发表期刊	Science
出版年	2021
英文摘要	Light-emitting diodes (LEDs) that emit circularly polarized light (spin-LEDs) have potential applications in in three-dimensional displays, bioencoding, and tomography. The requisite spin polarization of the charge carriers is usually achieved with ferromagnetic contacts and applied magnetic fields, but Kim et al. report on a room-temperature spin-LED that relies instead on a chiral-induced spin selectivity organic layer. This layer selectively injected spin-polarized holes into metal halide perovskite nanocrystals, where they radiatively recombined with unpolarized electrons with an efficiency of 2.6%. Science , this issue p. [1129][1] 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. [1]: /lookup/doi/10.1126/science.abf5291
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/318690
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Young-Hoon Kim,Yaxin Zhai,Haipeng Lu,et al. Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode[J]. Science,2021.
APA	Young-Hoon Kim.,Yaxin Zhai.,Haipeng Lu.,Xin Pan.,Chuanxiao Xiao.,...&Matthew C. Beard.(2021).Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode.Science.
MLA	Young-Hoon Kim,et al."Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode".Science (2021).