Effect of ion concentration in the ionomers used as an electron injecting layer in polymer light-emitting diodes

Cited 6 time in webofscience Cited 0 time in scopus
  • Hit : 251
  • Download : 0
The polymer light-emitting diodes (LEDs) were fabricated using poly[2-methoxy-5-(2'-(ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) as an emissive material and sodium sulfonated polystyrene (SSPS) ionomer with various ionic mole percents as an electron injecting material. The optimum ion concentration of SSPS was found at 6.7 mol% in the ITO/MEH-PPV/ionomer/Al structure. The quantum efficiency of the device is greatly enhanced near the critical ion concentration (CIC) of the ionomers, which is depending upon by the number of charge carriers and their mobility. The increase of charge carriers in the region below the CIC of ionomers enhances the quantum efficiency of the device by introducing more electrons. On the contrary, in the region above the CIC, the quantum efficiency is reduced by the restricted mobility of the ions due to the cluster formation. (C) 2000 Elsevier Science S.A. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2000-06
Language
English
Article Type
Article; Proceedings Paper
Citation

SYNTHETIC METALS, v.111, pp.225 - 227

ISSN
0379-6779
URI
http://hdl.handle.net/10203/76585
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 6 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0