Color-stable white-light-emitting diodes doped with phosphorescent dopants via enhanced energy transfer through homogeneous morphology

Nok Hyun Ju, Tae Ho Kim, Jong Hyeok Park, O. Ok Park

Research output: Contribution to journalArticle

Abstract

We demonstrate that white light-emitting diodes using polyfluorene-based blue-emitting conjugated copolymer and small molecule as co-host doped with green and red-emitting phosphorescent dyes. The energy transfer from co-host to phosphorescent dyes is enhanced by blending with small molecule due to the suppressed phase separation between conjugated polymer and Ir complexes as well as the high triplet state of co-host. We obtained voltage-independent pure white light emission with homogeneous morphology in the blended single active layer system by reducing charge trapping in Ir complexes and enhancing the efficient Förster energy transfer.

Original languageEnglish
Pages (from-to)4203-4206
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume13
Issue number6
DOIs
Publication statusPublished - 2013 Jun 1

Fingerprint

Energy Transfer
Coloring Agents
Color
Light
Polymers

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

@article{03ecdf227e60408ebd0d749d616c8375,
title = "Color-stable white-light-emitting diodes doped with phosphorescent dopants via enhanced energy transfer through homogeneous morphology",
abstract = "We demonstrate that white light-emitting diodes using polyfluorene-based blue-emitting conjugated copolymer and small molecule as co-host doped with green and red-emitting phosphorescent dyes. The energy transfer from co-host to phosphorescent dyes is enhanced by blending with small molecule due to the suppressed phase separation between conjugated polymer and Ir complexes as well as the high triplet state of co-host. We obtained voltage-independent pure white light emission with homogeneous morphology in the blended single active layer system by reducing charge trapping in Ir complexes and enhancing the efficient F{\"o}rster energy transfer.",
author = "Ju, {Nok Hyun} and Kim, {Tae Ho} and Park, {Jong Hyeok} and Park, {O. Ok}",
year = "2013",
month = "6",
day = "1",
doi = "10.1166/jnn.2013.7007",
language = "English",
volume = "13",
pages = "4203--4206",
journal = "Journal of Nanoscience and Nanotechnology",
issn = "1533-4880",
publisher = "American Scientific Publishers",
number = "6",

}

Color-stable white-light-emitting diodes doped with phosphorescent dopants via enhanced energy transfer through homogeneous morphology. / Ju, Nok Hyun; Kim, Tae Ho; Park, Jong Hyeok; Park, O. Ok.

In: Journal of Nanoscience and Nanotechnology, Vol. 13, No. 6, 01.06.2013, p. 4203-4206.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Color-stable white-light-emitting diodes doped with phosphorescent dopants via enhanced energy transfer through homogeneous morphology

AU - Ju, Nok Hyun

AU - Kim, Tae Ho

AU - Park, Jong Hyeok

AU - Park, O. Ok

PY - 2013/6/1

Y1 - 2013/6/1

N2 - We demonstrate that white light-emitting diodes using polyfluorene-based blue-emitting conjugated copolymer and small molecule as co-host doped with green and red-emitting phosphorescent dyes. The energy transfer from co-host to phosphorescent dyes is enhanced by blending with small molecule due to the suppressed phase separation between conjugated polymer and Ir complexes as well as the high triplet state of co-host. We obtained voltage-independent pure white light emission with homogeneous morphology in the blended single active layer system by reducing charge trapping in Ir complexes and enhancing the efficient Förster energy transfer.

AB - We demonstrate that white light-emitting diodes using polyfluorene-based blue-emitting conjugated copolymer and small molecule as co-host doped with green and red-emitting phosphorescent dyes. The energy transfer from co-host to phosphorescent dyes is enhanced by blending with small molecule due to the suppressed phase separation between conjugated polymer and Ir complexes as well as the high triplet state of co-host. We obtained voltage-independent pure white light emission with homogeneous morphology in the blended single active layer system by reducing charge trapping in Ir complexes and enhancing the efficient Förster energy transfer.

UR - http://www.scopus.com/inward/record.url?scp=84878693994&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878693994&partnerID=8YFLogxK

U2 - 10.1166/jnn.2013.7007

DO - 10.1166/jnn.2013.7007

M3 - Article

AN - SCOPUS:84878693994

VL - 13

SP - 4203

EP - 4206

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

SN - 1533-4880

IS - 6

ER -