Carrier transport properties of organic materials for EL device operation

Shigeki Naka; Hiroyuki Okada; Hiroyoshi Onnagawa; Yoshihisa Yamaguchi; Tetsuo Tsutsui

doi:10.1016/S0379-6779(99)00358-6

Carrier transport properties of organic materials for EL device operation

Shigeki Naka^*, Hiroyuki Okada, Hiroyoshi Onnagawa, Yoshihisa Yamaguchi, Tetsuo Tsutsui

^*Corresponding author for this work

Electric and Electronic Engineering

Research output: Contribution to journal › Conference article › peer-review

240 Scopus citations

Abstract

We have measured drift mobilities in vacuum deposited films of tris(8-quinolinolato)aluminum (Alq₃), a triphenylamine derivative (TPD) and a naphtyl-substituted benzidine derivative (α-NPD) using a time-of-flight (TOF) technique. The hole mobilities of TPD and α-NPD are about two orders of magnitude higher than the electron mobility of Alq₃. This implies that the current density versus applied voltage characteristics is dominated by the electron mobility of Alq₃ rather than the hole mobility of TPD or α-NPD in double-layered devices ITO/TPD or α-NPD (50 nm)/Alq₃ (50 nm)/MgAg.

Original language	English
Pages (from-to)	331-333
Number of pages	3
Journal	Synthetic Metals
Volume	111
DOIs	https://doi.org/10.1016/S0379-6779(99)00358-6
State	Published - 2000/06/01
Event	2nd International Conference on Electroluminescence of Molecular Materials and Related Phenomena (ICEL-2) - Sheffield, UK Duration: 1999/05/15 → 1999/05/18

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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Cite this

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title = "Carrier transport properties of organic materials for EL device operation",

abstract = "We have measured drift mobilities in vacuum deposited films of tris(8-quinolinolato)aluminum (Alq3), a triphenylamine derivative (TPD) and a naphtyl-substituted benzidine derivative (α-NPD) using a time-of-flight (TOF) technique. The hole mobilities of TPD and α-NPD are about two orders of magnitude higher than the electron mobility of Alq3. This implies that the current density versus applied voltage characteristics is dominated by the electron mobility of Alq3 rather than the hole mobility of TPD or α-NPD in double-layered devices ITO/TPD or α-NPD (50 nm)/Alq3 (50 nm)/MgAg.",

author = "Shigeki Naka and Hiroyuki Okada and Hiroyoshi Onnagawa and Yoshihisa Yamaguchi and Tetsuo Tsutsui",

note = "Funding Information: This work was partly supported by Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Cooperation (JST).; 2nd International Conference on Electroluminescence of Molecular Materials and Related Phenomena (ICEL-2) ; Conference date: 15-05-1999 Through 18-05-1999",

year = "2000",

month = jun,

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doi = "10.1016/S0379-6779(99)00358-6",

language = "英語",

volume = "111",

pages = "331--333",

journal = "Synthetic Metals",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Carrier transport properties of organic materials for EL device operation

AU - Naka, Shigeki

AU - Okada, Hiroyuki

AU - Onnagawa, Hiroyoshi

AU - Yamaguchi, Yoshihisa

AU - Tsutsui, Tetsuo

N1 - Funding Information: This work was partly supported by Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Cooperation (JST).

PY - 2000/6/1

Y1 - 2000/6/1

N2 - We have measured drift mobilities in vacuum deposited films of tris(8-quinolinolato)aluminum (Alq3), a triphenylamine derivative (TPD) and a naphtyl-substituted benzidine derivative (α-NPD) using a time-of-flight (TOF) technique. The hole mobilities of TPD and α-NPD are about two orders of magnitude higher than the electron mobility of Alq3. This implies that the current density versus applied voltage characteristics is dominated by the electron mobility of Alq3 rather than the hole mobility of TPD or α-NPD in double-layered devices ITO/TPD or α-NPD (50 nm)/Alq3 (50 nm)/MgAg.

AB - We have measured drift mobilities in vacuum deposited films of tris(8-quinolinolato)aluminum (Alq3), a triphenylamine derivative (TPD) and a naphtyl-substituted benzidine derivative (α-NPD) using a time-of-flight (TOF) technique. The hole mobilities of TPD and α-NPD are about two orders of magnitude higher than the electron mobility of Alq3. This implies that the current density versus applied voltage characteristics is dominated by the electron mobility of Alq3 rather than the hole mobility of TPD or α-NPD in double-layered devices ITO/TPD or α-NPD (50 nm)/Alq3 (50 nm)/MgAg.

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U2 - 10.1016/S0379-6779(99)00358-6

DO - 10.1016/S0379-6779(99)00358-6

M3 - 会議記事

AN - SCOPUS:0033699781

SN - 0379-6779

VL - 111

SP - 331

EP - 333

JO - Synthetic Metals

JF - Synthetic Metals

T2 - 2nd International Conference on Electroluminescence of Molecular Materials and Related Phenomena (ICEL-2)

Y2 - 15 May 1999 through 18 May 1999

ER -

Carrier transport properties of organic materials for EL device operation

Abstract

ASJC Scopus subject areas

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