Role of ionic species in determining characteristics of polymer LEDs

Authors
MacDiarmid, AG Huang, F
Citation
Ag. Macdiarmid et F. Huang, Role of ionic species in determining characteristics of polymer LEDs, SYNTH METAL, 102(1-3), 1999, pp. 1026-1029
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
102
Issue
1-3
Year of publication
1999
Pages
1026 - 1029
Database
ISI
SICI code
0379-6779(199906)102:1-3<1026:ROISID>2.0.ZU;2-W
Abstract
Even traces of ionic species in the emissive polymer layer in Al/MEH-PPV/IT O LEDs or in the non-emissive emeraldine base, "EB" layer, in Al/MEH-PPV/EB /LTO LEDs are shown to dramatically change the characteristics of the LEDs including improved quantum yield and/or operation in both forward and rever se bias modes-due to reduction of electron/hole injection energies facilita ted by ion diffusion phenomenon.