Halide

Chemistry

Materials science

Optoelectronics

Electroluminescence

Physics

Crystallography

Ferromagnetism

Nanotechnology

Magnetoresistance

Perovskite (structure)

Spintronics

Quantum mechanics

Spin valve

Magnetic field

Trihalide

Spin (aerodynamics)

Inorganic chemistry

Condensed matter physics

Layer (electronics)

Thermodynamics

Nature Communications

Recently the hybrid organic-inorganic trihalide perovskites have shown remarkable performance as active layers in photovoltaic and other optoelectronic devices. However, their spin characteristic properties have not been fully studied, although due to the relatively large spin-orbit coupling these materials may show great promise for spintronic applications. Here we demonstrate spin-polarized carrier injection into methylammonium lead bromide films from metallic ferromagnetic electrodes in two spintronic-based devices: a 'spin light emitting diode' that results in circularly polarized electroluminescence emission; and a 'vertical spin valve' that shows giant magnetoresistance. In addition, we also apply a magnetic field perpendicular to the injected spins orientation for measuring the 'Hanle effect', from which we obtain a relatively long spin lifetime for the electrically injected carriers. Our measurements initiate the field of hybrid perovskites spin-related optoelectronic applications.

Spin-optoelectronic devices based on hybrid organic-inorganic trihalide perovskites