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ELECTRICAL PROPERTIES OF DYE-DOPED COLOUR TUNABLE ORGANIC LIGHT EMITTING DIODE

Identifieur interne : 001E06 ( Main/Repository ); précédent : 001E05; suivant : 001E07

ELECTRICAL PROPERTIES OF DYE-DOPED COLOUR TUNABLE ORGANIC LIGHT EMITTING DIODE

Auteurs : RBID : Pascal:12-0308937

Descripteurs français

Pascal (Inist)
- Propriété électrique, Colorant organique, Verre, Phénomène transport, Dopage, Densité.
Wicri :
- concept : Verre, Dopage.

English descriptors

KwdEn :
- Density, Doping, Electrical properties, Glass, Organic dye, Transport process.

Abstract

In this work, we report on the electrical properties of dye-doped colour tunable organic light-emitting diode (OLED). The device structure is glass substrate/indium tin oxide/N,N'-di(naphthalen-1-yl)-N,N'-diphenyl-benzidine (NPB) 30 nm/Alq₃:DCM 50 nm/Aluminum (AI) 150 nm where NPB is the hole transport layer. Alq₃:DCM is the emitting layer which made of tris(8-hydroxyquinoline) aluminium (Alq₃) doped with 4-(Dicyanomethylene)-2-methyl-6-(4-dimethyl-aminostyryl)-4H-pyran (DCM) organic dye. The influence of doping concentration has been investigated by current density-voltage measurement, luminance intensity-voltage characteristic, electroluminescence (EL) and impedance spectroscopy, respectively. The EL spectrum exhibits the shifted of peak position from green to red region. The threshold voltage of the device decreased at the low DCM doping concentration (1 wt.%), in contrast, when the increase in the doping concentrations then the threshold voltage will be increased. The highest luminance intensity and lowest turn-on voltage of OLED can be observed at doping concentration about of 1 wt.% of DCM. The impedance characteristics of the dye-doped OLED can be modelled by simply adopting the conventional equivalent circuit with the simple combination of resistors and capacitors network.

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Pascal:12-0308937

Le document en format XML

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<author><name sortKey="Khantham, Sirintra" uniqKey="Khantham S">Sirintra Khantham</name>
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<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Thailand Center of Excellence in Physics, CHE, 328 Si Ayutthaya Rd.</s1>
<s2>Bangkok 10400</s2>
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<author><name sortKey="Tunhoo, Benchapol" uniqKey="Tunhoo B">Benchapol Tunhoo</name>
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<author><name sortKey="Thiwawong, Thutiyaporn" uniqKey="Thiwawong T">Thutiyaporn Thiwawong</name>
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<author><name sortKey="Nukeaw, Jiti" uniqKey="Nukeaw J">Jiti Nukeaw</name>
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<front><div type="abstract" xml:lang="en">In this work, we report on the electrical properties of dye-doped colour tunable organic light-emitting diode (OLED). The device structure is glass substrate/indium tin oxide/N,N'-di(naphthalen-1-yl)-N,N'-diphenyl-benzidine (NPB) 30 nm/Alq<sub>3</sub>
:DCM 50 nm/Aluminum (AI) 150 nm where NPB is the hole transport layer. Alq<sub>3</sub>
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) doped with 4-(Dicyanomethylene)-2-methyl-6-(4-dimethyl-aminostyryl)-4H-pyran (DCM) organic dye. The influence of doping concentration has been investigated by current density-voltage measurement, luminance intensity-voltage characteristic, electroluminescence (EL) and impedance spectroscopy, respectively. The EL spectrum exhibits the shifted of peak position from green to red region. The threshold voltage of the device decreased at the low DCM doping concentration (1 wt.%), in contrast, when the increase in the doping concentrations then the threshold voltage will be increased. The highest luminance intensity and lowest turn-on voltage of OLED can be observed at doping concentration about of 1 wt.% of DCM. The impedance characteristics of the dye-doped OLED can be modelled by simply adopting the conventional equivalent circuit with the simple combination of resistors and capacitors network.</div>
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:DCM 50 nm/Aluminum (AI) 150 nm where NPB is the hole transport layer. Alq<sub>3</sub>
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) doped with 4-(Dicyanomethylene)-2-methyl-6-(4-dimethyl-aminostyryl)-4H-pyran (DCM) organic dye. The influence of doping concentration has been investigated by current density-voltage measurement, luminance intensity-voltage characteristic, electroluminescence (EL) and impedance spectroscopy, respectively. The EL spectrum exhibits the shifted of peak position from green to red region. The threshold voltage of the device decreased at the low DCM doping concentration (1 wt.%), in contrast, when the increase in the doping concentrations then the threshold voltage will be increased. The highest luminance intensity and lowest turn-on voltage of OLED can be observed at doping concentration about of 1 wt.% of DCM. The impedance characteristics of the dye-doped OLED can be modelled by simply adopting the conventional equivalent circuit with the simple combination of resistors and capacitors network.</s0>
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<s3>Bangkok THA</s3>
<s4>2010-11-18</s4>
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ELECTRICAL PROPERTIES OF DYE-DOPED COLOUR TUNABLE ORGANIC LIGHT EMITTING DIODE

ELECTRICAL PROPERTIES OF DYE-DOPED COLOUR TUNABLE ORGANIC LIGHT EMITTING DIODE

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri