High-frequency response of polymeric light-emitting diodes

被引：23

作者：

Pal, AJ

Osterbacka, R

Kallman, KM

Stubb, H

机构：

[1] Åbo Akademi University, Department of Physics, FIN-20500 Åbo

来源：

APPLIED PHYSICS LETTERS | 1997年 / 70卷 / 15期

关键词：

D O I：

10.1063/1.118771

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The frequency dependence of alternating-current polymeric light-emitting diodes has been studied. Langmuir-Blodgett (LB) films of poly(3-hexylthiophene) have been used as the active emitting material sandwiched between LB films of emeraldine base polyaniline to form the device. We have shown that by reducing the thickness of the emitting layer using the LB deposition technique, one can increase the high-frequency operating limit of the device. From the -3 dB frequency, we have calculated the carrier mobility in the emitting polymer layer, and compared it with the Poole-Frenkel model. The electroluminescence and photoluminescence spectra have been studied. (C) 1997 American Institute of Physics.

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页码：2022 / 2024

页数：3

相关论文

共 11 条

[1] THERMOCHROMISM AND OPTICAL ADSORPTION IN LANGMUIR-BLODGETT-FILMS OF ALKYL-SUBSTITUTED POLYTHIOPHENES [J].

AHLSKOG, M ;

PALOHEIMO, J ;

STUBB, H ;

DYREKLEV, P ;

FAHLMAN, M ;

INGANAS, O ;

ANDERSSON, MR .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (02) :893-899

[2] LIGHT-EMITTING-DIODES FABRICATED WITH CONJUGATED POLYMERS - RECENT PROGRESS [J].

BAIGENT, DR ;

GREENHAM, NC ;

GRUNER, J ;

MARKS, RN ;

FRIEND, RH ;

MORATTI, SC ;

HOLMES, AB .

SYNTHETIC METALS, 1994, 67 (1-3) :3-10

[3]

GRANHOLM P, IN PRESS PHYS REV B

[4] Quinquethiophene light-emitting diodes with molecular dimensions [J].

Pal, AJ ;

Ostergard, T ;

Paloheimo, J ;

Stubb, H .

PHYSICAL REVIEW B, 1997, 55 (03) :1306-1309

[5] Polymeric light-emitting diodes from molecularly thin poly(3-hexylthiophene) Langmuir-Blodgett films [J].

Pal, AJ ;

Ostergard, T ;

Paloheimo, J ;

Stubb, H .

APPLIED PHYSICS LETTERS, 1996, 69 (08) :1137-1139

[6] MOLECULAR FIELD-EFFECT TRANSISTORS USING CONDUCTING POLYMER LANGMUIR-BLODGETT-FILMS [J].

PALOHEIMO, J ;

KUIVALAINEN, P ;

STUBB, H ;

VUORIMAA, E ;

YLILAHTI, P .

APPLIED PHYSICS LETTERS, 1990, 56 (12) :1157-1159

[7] A study of hole mobility in diaryldiacetylenes [J].

Vannikov, AV ;

Tameev, AR ;

Maltsev, EI ;

Milburn, GHW ;

Shand, AJ ;

Werninck, AR ;

Wright, J .

SYNTHETIC METALS, 1996, 78 (01) :79-83

[8] THE DECREASE OF THE HOLE MOBILITY IN A MOLECULARLY DOPED POLYMER AT HIGH ELECTRIC-FIELDS [J].

VERBEEK, G ;

VANDERAUWERAER, M ;

DESCHRYVER, FC ;

GEELEN, C ;

TERRELL, D ;

DEMEUTER, S .

CHEMICAL PHYSICS LETTERS, 1992, 188 (1-2) :85-92

[9] Application of polyaniline (emeraldine base, EB) in polymer light-emitting devices [J].

Wang, HL ;

MacDiarmid, AG ;

Wang, YZ ;

Gebler, DD ;

Epstein, AJ .

SYNTHETIC METALS, 1996, 78 (01) :33-37

[10]

Wang YZ, 1996, APPL PHYS LETT, V68, P894, DOI 10.1063/1.116222