Dynamic electrical characteristics of organic light-emitting diodes

Xiu Long Zhang; Sheng Yi Yang; Zhi Dong Lou; Yan Bing Hou

Dynamic electrical characteristics of organic light-emitting diodes

Xiu Long Zhang^*, Sheng Yi Yang, Zhi Dong Lou, Yan Bing Hou

^*Corresponding author for this work

Beijing Jiaotong University

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

10 Citations (Scopus)

Abstract

The charge carriers conduction mechanism of single-layer device ITO/Alq₃ (90 nm)/Al has been studied by impedance spectroscopy. According to the frequency-dependent response and its equivalent circuit model, the device can be interpreted in terms of the equivalent circuit model of a contact resistance R_S in series with a parallel combination of a capacitance C_P and a resistance R_P, and the values of R_P, C_P and R_S can be found from experimental data. Our experimental results confirmed that the charge carriers conduction mechanism of ITO/Alq₃(90 nm)/Al is trap-charge limited current with exponential distribution, and the dielectric relaxation time of the material decreases dramatically with increasing applied bias voltages.

Original language	English
Pages (from-to)	1632-1636
Number of pages	5
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	56
Issue number	3
Publication status	Published - Mar 2007
Externally published	Yes

Keywords

Alq
Impedance spectroscopy
Organic light-emitting diodes (OLEDs)
Trap-charge limited current

Cite this

@article{7008c24484244f38917617e0fa0ed5a5,

title = "Dynamic electrical characteristics of organic light-emitting diodes",

abstract = "The charge carriers conduction mechanism of single-layer device ITO/Alq3 (90 nm)/Al has been studied by impedance spectroscopy. According to the frequency-dependent response and its equivalent circuit model, the device can be interpreted in terms of the equivalent circuit model of a contact resistance RS in series with a parallel combination of a capacitance CP and a resistance RP, and the values of RP, CP and RS can be found from experimental data. Our experimental results confirmed that the charge carriers conduction mechanism of ITO/Alq3(90 nm)/Al is trap-charge limited current with exponential distribution, and the dielectric relaxation time of the material decreases dramatically with increasing applied bias voltages.",

keywords = "Alq, Impedance spectroscopy, Organic light-emitting diodes (OLEDs), Trap-charge limited current",

author = "Zhang, {Xiu Long} and Yang, {Sheng Yi} and Lou, {Zhi Dong} and Hou, {Yan Bing}",

year = "2007",

month = mar,

language = "English",

volume = "56",

pages = "1632--1636",

journal = "Wuli Xuebao/Acta Physica Sinica",

issn = "1000-3290",

publisher = "Institute of Physics, Chinese Academy of Sciences",

number = "3",

}

TY - JOUR

T1 - Dynamic electrical characteristics of organic light-emitting diodes

AU - Zhang, Xiu Long

AU - Yang, Sheng Yi

AU - Lou, Zhi Dong

AU - Hou, Yan Bing

PY - 2007/3

Y1 - 2007/3

N2 - The charge carriers conduction mechanism of single-layer device ITO/Alq3 (90 nm)/Al has been studied by impedance spectroscopy. According to the frequency-dependent response and its equivalent circuit model, the device can be interpreted in terms of the equivalent circuit model of a contact resistance RS in series with a parallel combination of a capacitance CP and a resistance RP, and the values of RP, CP and RS can be found from experimental data. Our experimental results confirmed that the charge carriers conduction mechanism of ITO/Alq3(90 nm)/Al is trap-charge limited current with exponential distribution, and the dielectric relaxation time of the material decreases dramatically with increasing applied bias voltages.

AB - The charge carriers conduction mechanism of single-layer device ITO/Alq3 (90 nm)/Al has been studied by impedance spectroscopy. According to the frequency-dependent response and its equivalent circuit model, the device can be interpreted in terms of the equivalent circuit model of a contact resistance RS in series with a parallel combination of a capacitance CP and a resistance RP, and the values of RP, CP and RS can be found from experimental data. Our experimental results confirmed that the charge carriers conduction mechanism of ITO/Alq3(90 nm)/Al is trap-charge limited current with exponential distribution, and the dielectric relaxation time of the material decreases dramatically with increasing applied bias voltages.

KW - Alq

KW - Impedance spectroscopy

KW - Organic light-emitting diodes (OLEDs)

KW - Trap-charge limited current

UR - http://www.scopus.com/inward/record.url?scp=34147197409&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:34147197409

SN - 1000-3290

VL - 56

SP - 1632

EP - 1636

JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

IS - 3

ER -

Dynamic electrical characteristics of organic light-emitting diodes

Abstract

Keywords

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