The Library
Enhancing light emission in interface engineered Spin‐OLEDs through spin‐polarized injection at high voltages
Tools
Tools
Tools
Prieto‐Ruiz, Juan Pablo, Gómez Miralles, Sara, Prima‐García, Helena, López‐Muñoz, Angel, Riminucci, Alberto, Graziosi, Patrizio, Aeschlimann, Martin, Cinchetti, Mirko, Dediu, Valentin Alek and Coronado, Eugenio (2019) Enhancing light emission in interface engineered Spin‐OLEDs through spin‐polarized injection at high voltages. Advanced Materials, 31 (10). 1806817. doi:10.1002/adma.201806817 ISSN 0935-9648.
An open access version can be found in:
Official URL: https://doi.org/10.1002/adma.201806817
Abstract
The quest for a spin‐polarized organic light‐emitting diode (spin‐OLED) is a common goal in the emerging fields of molecular electronics and spintronics. In this device, two ferromagnetic (FM) electrodes are used to enhance the electroluminescence intensity of the OLED through a magnetic control of the spin polarization of the injected carriers. The major difficulty is that the driving voltage of an OLED device exceeds a few volts, while spin injection in organic materials is only efficient at low voltages. The fabrication of a spin‐OLED that uses a conjugated polymer as bipolar spin collector layer and ferromagnetic electrodes is reported here. Through a careful engineering of the organic/inorganic interfaces, it is succeeded in obtaining a light‐emitting device showing spin‐valve effects at high voltages (up to 14 V). This allows the detection of a magneto‐electroluminescence (MEL) enhancement on the order of a 2.4% at 9 V for the antiparallel (AP) configuration of the magnetic electrodes. This observation provides evidence for the long‐standing fundamental issue of injecting spins from magnetic electrodes into the frontier levels of a molecular semiconductor. The finding opens the way for the design of multifunctional devices coupling the light and the spin degrees of freedom.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Journal or Publication Title: | Advanced Materials | ||||||||
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||||
| ISSN: | 0935-9648 | ||||||||
| Official Date: | 8 March 2019 | ||||||||
| Dates: |
|
||||||||
| Volume: | 31 | ||||||||
| Number: | 10 | ||||||||
| Article Number: | 1806817 | ||||||||
| DOI: | 10.1002/adma.201806817 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 6 March 2019 | ||||||||
| Open Access Version: |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
