• The role of copper-phthalocyan...

Treffer: The role of copper-phthalocyanine in multilayer organic LEDs based on small molecules

Title:
The role of copper-phthalocyanine in multilayer organic LEDs based on small molecules
Authors:
RIEL, Heike, BEIERLEIN, Tilman A, KARG, Siegfried, RIESS, Walter
Source:
Organic light-emitting materials and devices VI (Seattle WA, 8-10 July 2002)SPIE proceedings series. :148-155
Publisher Information:
Bellingham WA: SPIE, 2003.
Publication Year:
2003
Physical Description:
print, 29 ref
Original Material:
INIST-CNRS
Subject Terms:
Electronics, Electronique, Optics, Optique, Physics, Physique, Telecommunications, Télécommunications, Sciences exactes et technologie, Exact sciences and technology, Sciences appliquees, Applied sciences, Electronique, Electronics, Matériaux, Materials, Electronique des semiconducteurs. Microélectronique. Optoélectronique. Dispositifs à l'état solide, Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices, Dispositifs optoélectroniques, Optoelectronic devices, Barrière énergie, Energy barrier, Barrera energía, Capacité électrique, Capacitance, Capacitancia, Caractéristique courant tension, Voltage current curve, Característica corriente tensión, Champ interne, Internal field, Campo interno, Champ électrique, Electric field, Campo eléctrico, Circuit multicouche, Multilayered circuit, Circuito multicapa, Couche interfaciale, Interfacial layer, Capa interfacial, Cuivre, Copper, Cobre, Dispositif électroluminescent, Electroluminescent device, Dispositivo electroluminiscente, Dépendance fréquence, Frequency dependence, Epaisseur couche, Layer thickness, Espesor capa, Etude comparative, Comparative study, Estudio comparativo, Fabrication microélectronique, Microelectronic fabrication, Fabricación microeléctrica, Forme onde, Waveform, Forma onda, Fréquence coupure, Cut off frequency, Frecuencia corte, Impédance électrique, Electrical impedance, Impedancia eléctrica, Matériau organique, Organic material, Material orgánico, Mobilité trou, Hole mobility, Movilidad agujero, Mobilité électron, Electron mobility, Movilidad electrón, Méthode combinatoire, Combinatorial method, Método combinatorio, Méthode mesure, Measurement method, Método medida, Phtalocyanine, Phthalocyanine, Ftalocianina, Propriété matériau, Properties of materials, Propiedad material, Propriété transport, Transport properties, Propiedad transporte, Résultat expérimental, Experimental result, Resultado experimental, Cu, Dispositif électroluminescent organique, Organic light-emitting devices
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
IBM Research, Zurich Research Laboratory, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=15222467
Rights:
Copyright 2003 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Electronics
Accession Number:
edscal.15222467
Database:
PASCAL Archive

Weitere Informationen

The role of copper-phthalocyanine (CuPc) as intermediate layer between the anode and the hole-transport layer in multilayer organic light-emitting devices (OLEDs) was studied. The OLEDs consisted of CuPc, N,N'-di(naphtalene-1-yl)-N,N'-diphenyl-benzidine (NPB) as hole-transport layer and tris-(8-hydroxyquinolinato)-aluminum (Alq3) as electron-transport and emitting layer sandwiched between a high-work-function metal and a semi-transparent calcium cathode. A combinatorial approach that allows the simultaneous fabrication of 10 x 10 individual devices was used to vary the thicknesses of CuPc and NPB over a broad range from 0 to 45 nm and from 10 to 100 nm, respectively. Systematic current-voltage and impedance measurements revealed a redistribution of the internal electric field of the CuPc/ NPB/Alq3 three-layer structure compared to that of the NPB/Alq3 bilayer OLED. It was demonstrated that the hole transport is mainly controlled by the internal energy barrier at the CuPc/NPB interface. The fact that CuPc strongly impedes hole injection into NPB also has a significant impact on the frequency-dependent behavior of the capacitance, especially the cutoff frequency.