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Updated: Jan 30, 2026
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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
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Enhancing Light Emission in Interface Engineered Spin-OLEDs through Spin-Polarized Injection at High Voltages
Juan Pablo Prieto-Ruiz1, Sara Gómez Miralles1, Helena Prima-García1
1Instituto de Ciencia Molecular (ICMol), Universidad de Valencia. Catedrático José Beltrán 2, 46890, Paterna, Spain.
Advanced Materials (Deerfield Beach, Fla.)
|January 16, 2019
Summary
Researchers developed a novel spin-organic light-emitting diode (spin-OLED) overcoming high voltage limitations. This breakthrough enables efficient spin injection in molecular electronics, paving the way for new spintronic devices.
Area of Science:
- Molecular electronics
- Spintronics
- Organic semiconductor devices
Background:
- Spin-polarized organic light-emitting diodes (spin-OLEDs) aim to enhance electroluminescence via magnetic control of carrier spin polarization.
- A key challenge is efficient spin injection into organic materials at the high voltages required for OLED operation.
Purpose of the Study:
- To fabricate a spin-OLED capable of operating efficiently at high voltages.
- To demonstrate spin-valve effects and magneto-electroluminescence (MEL) in such a device.
Main Methods:
- Fabrication of a spin-OLED using a conjugated polymer as a bipolar spin collector and ferromagnetic electrodes.
- Engineering of organic/inorganic interfaces to facilitate spin injection.
Main Results:
- Achieved a light-emitting device exhibiting spin-valve effects at voltages up to 14 V.
- Observed a magneto-electroluminescence (MEL) enhancement of 2.4% at 9 V in the antiparallel (AP) configuration.
Conclusions:
- Successfully demonstrated efficient spin injection from ferromagnetic electrodes into a molecular semiconductor at high operating voltages.
- This work validates fundamental concepts in spin injection and opens avenues for multifunctional devices integrating light and spin functionalities.
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