Enhanced color purity and stability from polymer/nanoporous silica nanocomposite blue light-emitting diodes

Jong Hyeok Park, Tae Ho Kim, Jae Woong Yu, Jai Kyeong Kim, Young Chul Kim, O. Ok Park

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Photo-oxidation plays an important role in the lifetime of PLEDs fabricated from PFs. In addition, most of these PLEDs suffer from a degradation of the device under operation; the degradation is documented in the formation of a low-energy emission band at 2.2-2.3 eV, which turns the desired blue emission color into an undesired blue-green emission. With the aim of simultaneously overcoming all these drawbacks, a blue light-emitting polymer/mesoporous silica nanocomposite was prepared by blending poly(9,9-dioctylfluorene) with surface modified nanoporous silica. This nanocomposite film shows dramatically increased photo-stability and color purity.

Original languageEnglish
Pages (from-to)145-148
Number of pages4
JournalSynthetic Metals
Volume154
Issue number1-3
DOIs
Publication statusPublished - 2005 Sep 22

Fingerprint

Silicon Dioxide
Light emitting diodes
Nanocomposites
nanocomposites
Polymers
purity
light emitting diodes
Silica
silicon dioxide
Color
color
Degradation
Nanocomposite films
Photooxidation
polymers
degradation
photooxidation
life (durability)
N,N'-dipyridoxylethylenediamine-N,N'-diacetic acid
energy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Park, Jong Hyeok ; Kim, Tae Ho ; Yu, Jae Woong ; Kim, Jai Kyeong ; Kim, Young Chul ; Park, O. Ok. / Enhanced color purity and stability from polymer/nanoporous silica nanocomposite blue light-emitting diodes. In: Synthetic Metals. 2005 ; Vol. 154, No. 1-3. pp. 145-148.
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Enhanced color purity and stability from polymer/nanoporous silica nanocomposite blue light-emitting diodes. / Park, Jong Hyeok; Kim, Tae Ho; Yu, Jae Woong; Kim, Jai Kyeong; Kim, Young Chul; Park, O. Ok.

In: Synthetic Metals, Vol. 154, No. 1-3, 22.09.2005, p. 145-148.

Research output: Contribution to journalArticle

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AU - Park, Jong Hyeok

AU - Kim, Tae Ho

AU - Yu, Jae Woong

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AU - Kim, Young Chul

AU - Park, O. Ok

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AB - Photo-oxidation plays an important role in the lifetime of PLEDs fabricated from PFs. In addition, most of these PLEDs suffer from a degradation of the device under operation; the degradation is documented in the formation of a low-energy emission band at 2.2-2.3 eV, which turns the desired blue emission color into an undesired blue-green emission. With the aim of simultaneously overcoming all these drawbacks, a blue light-emitting polymer/mesoporous silica nanocomposite was prepared by blending poly(9,9-dioctylfluorene) with surface modified nanoporous silica. This nanocomposite film shows dramatically increased photo-stability and color purity.

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