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

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.
Authors:
;  [1] ;  [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)
Publication Date:
OSTI Identifier:
22300301
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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