White-light-emitting diodes using miscible polymer blend doped with phosphorescent dye

Cited 11 time in webofscience Cited 0 time in scopus
  • Hit : 238
  • Download : 3
We demonstrate that voltage-independent and highly efficient white light-emitting diodes (WLED) can be obtained based on phosphorescent dye-doped conjugated polymer blend films. Conjugated polymers are used as the blue and green emitters, as well as the energy host, and a phosphorescent dye is used as the red emitter and guest material. The phase-separation between the conjugated polymers is suppressed by blending miscible polymer and copolymer having the same moiety. Therefore, we expect that efficient Forster-type energy transfer occurs through this homogeneous morphology. By introducing the copolymer into the emissive layer to enhance its miscibility, we obtained a voltage-invariant white emission from the polymeric LEDs. The luminous efficiency of the WLED with the single active layer is increased dramatically by introducing the phosphorescent dopant as a red emitter. (C) 2011 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2011-06
Language
English
Article Type
Article
Keywords

CONJUGATED-POLYMER; ENERGY-TRANSFER; DEVICES; ELECTROPHOSPHORESCENCE

Citation

ORGANIC ELECTRONICS, v.12, no.6, pp.891 - 896

ISSN
1566-1199
DOI
10.1016/j.orgel.2011.03.001
URI
http://hdl.handle.net/10203/23919
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 11 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0