Room-temperature spin-polarized organic light-emitting diodes with a single ferromagnetic electrode

Journal Article · Mon May 19 04:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4879461· OSTI ID:22300301

Ding, Baofu; Alameh, Kamal ^[1]; Song, Qunliang ^[2]

---

1. Electron Science Research Institute, Edith Cowan University, 270 Joondalup Drive, Joondalup WA 6027 Australia (Australia)
2. Institute for Clean Energy and Advanced Materials, Southwest University, Chongqing 400715 (China)

In this paper, we demonstrate the concept of a room-temperature spin-polarized organic light-emitting diode (Spin-OLED) structure based on (i) the deposition of an ultra-thin p-type organic buffer layer on the surface of the ferromagnetic electrode of the Spin-OLED and (ii) the use of oxygen plasma treatment to modify the surface of that electrode. Experimental results demonstrate that the brightness of the developed Spin-OLED can be increased by 110% and that a magneto-electroluminescence of 12% can be attained for a 150 mT in-plane magnetic field, at room temperature. This is attributed to enhanced hole and room-temperature spin-polarized injection from the ferromagnetic electrode, respectively.

• OSTI ID: 22300301
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 104; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BRIGHTNESS
BUFFERS
DEPOSITION
ELECTRODES
ELECTROLUMINESCENCE
INJECTION
LAYERS
LIGHT EMITTING DIODES
MAGNETIC FIELDS
ORGANIC SEMICONDUCTORS
SPIN ORIENTATION
SURFACES
TEMPERATURE RANGE 0273-0400 K