Voltage-induced infrared absorption of the light-emitting diode based on MEH-PPV

Yukio Furukawa*, Mitsuru Ishima, Takanobu Noguchi, Toshihiro Ohnishi

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Infrared spectra of the light-emitting diodes fabricated with poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene) have been measured in situ with an external reflection apparatus on a Fourier-transform infrared spectrophotometer. Voltage-induced infrared absorption spectra have been measured using the difference-spectrum method. The observed bands have been attributed to injected positive carriers (polarons) on the basis of the spectra of the carriers generated by iodine-doping, Na-doping, and photo-irradiation. The observation of positive carriers is probably related to the predominance of injected positive carriers, which reduces the electroluminescence efficiency of the light-emitting diodes.

本文言語English
ページ(範囲)1649-1650
ページ数2
ジャーナルSynthetic Metals
121
1-3
DOI
出版ステータスPublished - 2001 3 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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