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

Yukio Furukawa; Mitsuru Ishima; Takanobu Noguchi; Toshihiro Ohnishi

doi:10.1016/S0379-6779(00)00822-5

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

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

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1649-1650
Number of pages	2
Journal	Synthetic Metals
Volume	121
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(00)00822-5
Publication status	Published - 2001 Mar 15

Keywords

Electroluminescence
Infrared and Raman spectroscopy
Poly(phenylenevinylene) and derivatives

ASJC Scopus subject areas

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

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10.1016/S0379-6779(00)00822-5

Cite this

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title = "Voltage-induced infrared absorption of the light-emitting diode based on MEH-PPV",

abstract = "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.",

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T1 - Voltage-induced infrared absorption of the light-emitting diode based on MEH-PPV

AU - Furukawa, Yukio

AU - Ishima, Mitsuru

AU - Noguchi, Takanobu

AU - Ohnishi, Toshihiro

PY - 2001/3/15

Y1 - 2001/3/15

N2 - 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.

AB - 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.

KW - Electroluminescence

KW - Infrared and Raman spectroscopy

KW - Poly(phenylenevinylene) and derivatives

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

Abstract

Keywords

ASJC Scopus subject areas

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