Impedance spectroscopy of a poly(p-phenylenevinylene)-based light-emitting diode device

S. H. Kim; J. W. Jang; K. W. Lee; Cheol Eui Lee; S. W. Kim

doi:10.1016/S0038-1098(03)00662-8

Impedance spectroscopy of a poly(p-phenylenevinylene)-based light-emitting diode device

S. H. Kim, J. W. Jang, K. W. Lee, Cheol Eui Lee, S. W. Kim

Department of Physics

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

13 Citations (Scopus)

Abstract

A poly-p-phenylenevinylene (PPV)-based light-emitting diode (LED) device was studied by means of comprehensive ac impedance measurements. Separate regions of frequency-dependent responses, the bulk and depleted (interface) regions, with distinct electrical properties, were identified and characterized. The ac J-E characteristics revealed the space-charge limited conduction mechanism, which was specifically assigned to the depleted region. Besides, a direct estimate of the trap density in the bulk region was obtained from the applied voltage dependence of the charge concentration.

Original language	English
Pages (from-to)	143-146
Number of pages	4
Journal	Solid State Communications
Volume	128
Issue number	4
DOIs	https://doi.org/10.1016/S0038-1098(03)00662-8
Publication status	Published - 2003 Oct

Keywords

A. Polymers, elastomers, and plastics
D. Dielectric response
D. Electronic transport

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/S0038-1098(03)00662-8

Cite this

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title = "Impedance spectroscopy of a poly(p-phenylenevinylene)-based light-emitting diode device",

abstract = "A poly-p-phenylenevinylene (PPV)-based light-emitting diode (LED) device was studied by means of comprehensive ac impedance measurements. Separate regions of frequency-dependent responses, the bulk and depleted (interface) regions, with distinct electrical properties, were identified and characterized. The ac J-E characteristics revealed the space-charge limited conduction mechanism, which was specifically assigned to the depleted region. Besides, a direct estimate of the trap density in the bulk region was obtained from the applied voltage dependence of the charge concentration.",

keywords = "A. Polymers, elastomers, and plastics, D. Dielectric response, D. Electronic transport",

author = "Kim, {S. H.} and Jang, {J. W.} and Lee, {K. W.} and Lee, {Cheol Eui} and Kim, {S. W.}",

note = "Funding Information: This work was supported by the KISTEP (National Research Laboratory and Proton Accelerator User Program No. M102KS010001-02K1901-01814) and by the Brain Korea 21 Project in 2003.",

year = "2003",

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doi = "10.1016/S0038-1098(03)00662-8",

language = "English",

volume = "128",

pages = "143--146",

journal = "Solid State Communications",

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T1 - Impedance spectroscopy of a poly(p-phenylenevinylene)-based light-emitting diode device

AU - Kim, S. H.

AU - Jang, J. W.

AU - Lee, K. W.

AU - Lee, Cheol Eui

AU - Kim, S. W.

N1 - Funding Information: This work was supported by the KISTEP (National Research Laboratory and Proton Accelerator User Program No. M102KS010001-02K1901-01814) and by the Brain Korea 21 Project in 2003.

PY - 2003/10

Y1 - 2003/10

N2 - A poly-p-phenylenevinylene (PPV)-based light-emitting diode (LED) device was studied by means of comprehensive ac impedance measurements. Separate regions of frequency-dependent responses, the bulk and depleted (interface) regions, with distinct electrical properties, were identified and characterized. The ac J-E characteristics revealed the space-charge limited conduction mechanism, which was specifically assigned to the depleted region. Besides, a direct estimate of the trap density in the bulk region was obtained from the applied voltage dependence of the charge concentration.

AB - A poly-p-phenylenevinylene (PPV)-based light-emitting diode (LED) device was studied by means of comprehensive ac impedance measurements. Separate regions of frequency-dependent responses, the bulk and depleted (interface) regions, with distinct electrical properties, were identified and characterized. The ac J-E characteristics revealed the space-charge limited conduction mechanism, which was specifically assigned to the depleted region. Besides, a direct estimate of the trap density in the bulk region was obtained from the applied voltage dependence of the charge concentration.

KW - A. Polymers, elastomers, and plastics

KW - D. Dielectric response

KW - D. Electronic transport

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DO - 10.1016/S0038-1098(03)00662-8

M3 - Article

AN - SCOPUS:0141571216

SN - 0038-1098

VL - 128

SP - 143

EP - 146

JO - Solid State Communications

JF - Solid State Communications

IS - 4

ER -

Impedance spectroscopy of a poly(p-phenylenevinylene)-based light-emitting diode device

Abstract

Keywords

ASJC Scopus subject areas

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