Enhanced electroluminescence from a conjugated polymer/ionomer blend

Tae Ho Kim, Jong Hyeok Park, Tae Woo Lee, O. Ok Park

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Poly [2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and poly (sodium 4-styrenesulfonate) ionomer (PSS-ionomer) blends were used as emitting layers in polymer light-emitting diodes (LEDs). The polymers were blended in various ratios, and their luminescent properties were compared with those of a MEH-PPV/polystyrene (PS) blend system. The MEH-PPV/PSS-ionomer and MEH-PPV/PS devices showed a much higher luminescent efficiency when compared with pure polymer devices, due to the dilution effect. The MEH-PPV/PSS-ionomer blend device achieved a more enhanced luminescent efficiency as compared with that of the MEH-PPV/PS device, due to polar groups in the PSS-ionomer, which may enhance the electron injection from the cathode to the emitting molecules. In addition, the turn-on voltage of the MEH-PPV/PSS-ionomer based on LEDs was also dramatically decreased.

Original languageEnglish
Pages (from-to)8567-8571
Number of pages5
JournalPolymer
Volume45
Issue number25
DOIs
Publication statusPublished - 2004 Jan 1

Fingerprint

Ionomers
Conjugated polymers
Electroluminescence
Sodium
Polystyrenes
Light emitting diodes
Polymers
Electron injection
Dilution
Cathodes
poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene)
Molecules
Electric potential
styrenesulfonic acid polymer

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Kim, Tae Ho ; Park, Jong Hyeok ; Lee, Tae Woo ; Park, O. Ok. / Enhanced electroluminescence from a conjugated polymer/ionomer blend. In: Polymer. 2004 ; Vol. 45, No. 25. pp. 8567-8571.
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Enhanced electroluminescence from a conjugated polymer/ionomer blend. / Kim, Tae Ho; Park, Jong Hyeok; Lee, Tae Woo; Park, O. Ok.

In: Polymer, Vol. 45, No. 25, 01.01.2004, p. 8567-8571.

Research output: Contribution to journalArticle

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T1 - Enhanced electroluminescence from a conjugated polymer/ionomer blend

AU - Kim, Tae Ho

AU - Park, Jong Hyeok

AU - Lee, Tae Woo

AU - Park, O. Ok

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AB - Poly [2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and poly (sodium 4-styrenesulfonate) ionomer (PSS-ionomer) blends were used as emitting layers in polymer light-emitting diodes (LEDs). The polymers were blended in various ratios, and their luminescent properties were compared with those of a MEH-PPV/polystyrene (PS) blend system. The MEH-PPV/PSS-ionomer and MEH-PPV/PS devices showed a much higher luminescent efficiency when compared with pure polymer devices, due to the dilution effect. The MEH-PPV/PSS-ionomer blend device achieved a more enhanced luminescent efficiency as compared with that of the MEH-PPV/PS device, due to polar groups in the PSS-ionomer, which may enhance the electron injection from the cathode to the emitting molecules. In addition, the turn-on voltage of the MEH-PPV/PSS-ionomer based on LEDs was also dramatically decreased.

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