White light emission from a polymer bilayer by incomplete cascade energy transfer

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

White light emission was obtained from a light-emitting diodes (LEDs) prepared from an immiscible polymer blend consisting of poly(9,9′-dihexylfluorene-2,7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (PDHFPPV) and poly(2-methoxy-5-(2′-ethy-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV). An inefficient energy transfer between PDHFPPV and MEH-PPV was observed because the blends are partially miscible. More importantly, because the order of bandgap energy is PVK > PDHFPPV > MEH-PPV we observed pure and strong white emission from this PLEDs, which results from the efficient Förster-type energy transfer from PVK to PDHFPPV and the partial energy transfer from PDHFPPV to MEH-PPV. The ITO/(PVK/immiscible blend)/Li:Al devices showed more enhanced white-light output compared with that of the ITO/(immiscible blend)/Li:Al device.

Original languageEnglish
Pages (from-to)640-643
Number of pages4
JournalCurrent Applied Physics
Volume6
Issue number4
DOIs
Publication statusPublished - 2006 Jul 1

Fingerprint

Light emission
Energy transfer
light emission
Polymers
cascades
energy transfer
ITO (semiconductors)
polymers
polymer blends
Polymer blends
Light emitting diodes
Energy gap
light emitting diodes
output
poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene)
energy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Park, Jong Hyeok ; Park, O. Ok ; Kim, Jai Kyeong ; Yu, Jae Woong ; Kim, Young Chul. / White light emission from a polymer bilayer by incomplete cascade energy transfer. In: Current Applied Physics. 2006 ; Vol. 6, No. 4. pp. 640-643.
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White light emission from a polymer bilayer by incomplete cascade energy transfer. / Park, Jong Hyeok; Park, O. Ok; Kim, Jai Kyeong; Yu, Jae Woong; Kim, Young Chul.

In: Current Applied Physics, Vol. 6, No. 4, 01.07.2006, p. 640-643.

Research output: Contribution to journalArticle

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