Effect of doping on optical and transport properties of charge carriers in Alq3

A. Uddin; C. B. Lee; X. Hu; T. K.S. Wong; X. W. Sun

doi:10.1016/j.jcrysgro.2005.12.034

Effect of doping on optical and transport properties of charge carriers in Alq₃

A. Uddin^*, C. B. Lee, X. Hu, T. K.S. Wong, X. W. Sun

^*Corresponding author for this work

Nanyang Technological University

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

19 Citations (Scopus)

Abstract

We investigated the optical and transport properties of charge carriers in doped amorphous Tris (8-hydroxyquinolinato) aluminum (Alq₃) films from room temperature to 130 °C. The doping concentration of dopant DCM was up to 24 wt% in Alq₃ films. The current-voltage, electroluminescence (EL) and light-current characteristics were measured. The current density was sharply increased up to a DCM concentration of 1.5 wt% in Alq₃ films for the same bias voltage. The EL peak position shifted from green to red color with DCM doping concentration in Alq₃. The highest EL efficiency was found for a DCM doping concentration of 0.5 wt%. The EL intensity was increased by about 2.5 times than that of the pure Alq₃. The EL intensity was reduced with temperature.

Original language	English
Pages (from-to)	115-118
Number of pages	4
Journal	Journal of Crystal Growth
Volume	288
Issue number	1
DOIs	https://doi.org/10.1016/j.jcrysgro.2005.12.034
Publication status	Published - Feb 2 2006
Externally published	Yes
Event	International Conference on Materials for Advanced Technologies - Duration: Jul 4 2005 → Jul 8 2005

ASJC Scopus Subject Areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

Keywords

A1. Doping
B2. Organic semiconductor
B3. Alq
B3. OLED

Access to Document

10.1016/j.jcrysgro.2005.12.034

Cite this

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title = "Effect of doping on optical and transport properties of charge carriers in Alq3",

abstract = "We investigated the optical and transport properties of charge carriers in doped amorphous Tris (8-hydroxyquinolinato) aluminum (Alq3) films from room temperature to 130 °C. The doping concentration of dopant DCM was up to 24 wt% in Alq3 films. The current-voltage, electroluminescence (EL) and light-current characteristics were measured. The current density was sharply increased up to a DCM concentration of 1.5 wt% in Alq3 films for the same bias voltage. The EL peak position shifted from green to red color with DCM doping concentration in Alq3. The highest EL efficiency was found for a DCM doping concentration of 0.5 wt%. The EL intensity was increased by about 2.5 times than that of the pure Alq3. The EL intensity was reduced with temperature.",

keywords = "A1. Doping, B2. Organic semiconductor, B3. Alq, B3. OLED",

author = "A. Uddin and Lee, {C. B.} and X. Hu and Wong, {T. K.S.} and Sun, {X. W.}",

year = "2006",

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doi = "10.1016/j.jcrysgro.2005.12.034",

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TY - JOUR

T1 - Effect of doping on optical and transport properties of charge carriers in Alq3

AU - Uddin, A.

AU - Lee, C. B.

AU - Hu, X.

AU - Wong, T. K.S.

AU - Sun, X. W.

PY - 2006/2/2

Y1 - 2006/2/2

N2 - We investigated the optical and transport properties of charge carriers in doped amorphous Tris (8-hydroxyquinolinato) aluminum (Alq3) films from room temperature to 130 °C. The doping concentration of dopant DCM was up to 24 wt% in Alq3 films. The current-voltage, electroluminescence (EL) and light-current characteristics were measured. The current density was sharply increased up to a DCM concentration of 1.5 wt% in Alq3 films for the same bias voltage. The EL peak position shifted from green to red color with DCM doping concentration in Alq3. The highest EL efficiency was found for a DCM doping concentration of 0.5 wt%. The EL intensity was increased by about 2.5 times than that of the pure Alq3. The EL intensity was reduced with temperature.

AB - We investigated the optical and transport properties of charge carriers in doped amorphous Tris (8-hydroxyquinolinato) aluminum (Alq3) films from room temperature to 130 °C. The doping concentration of dopant DCM was up to 24 wt% in Alq3 films. The current-voltage, electroluminescence (EL) and light-current characteristics were measured. The current density was sharply increased up to a DCM concentration of 1.5 wt% in Alq3 films for the same bias voltage. The EL peak position shifted from green to red color with DCM doping concentration in Alq3. The highest EL efficiency was found for a DCM doping concentration of 0.5 wt%. The EL intensity was increased by about 2.5 times than that of the pure Alq3. The EL intensity was reduced with temperature.

KW - A1. Doping

KW - B2. Organic semiconductor

KW - B3. Alq

KW - B3. OLED

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