Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices

K. C. Liu; C. W. Teng; C. C. Lee; K. Y. Cheng; Y. H. Lu; W. T. Liu; C. C. Chen; L. C. Chen

doi:10.1143/JJAP.45.3742

Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices

K. C. Liu^*
, C. W. Teng
, C. C. Lee
, K. Y. Cheng
, Y. H. Lu
, W. T. Liu
, C. C. Chen
, L. C. Chen

^*Corresponding author for this work

Department of Electronic Engineering

Chang Gung University
Delta Electronics, Inc.

Research output: Contribution to journal › Journal Article › peer-review

1 Scopus citations

Abstract

Top emission polymer light-emitting devices (PLEDs) with different heat treatments are investigated. Due to the high work function of an indium-tin-oxide (ITO) cathode as a top electrode, LiF is employed as an interlayer to increase electron injection. The PLEDs fabricated at room temperature show better electrical and optical characteristics such as current density-voltage, luminance, and current efficiency, etc., than that of PLED devices with heat treatment. To investigate the Li diffusion in the polyfluorene layer, X-ray photoelectron spectroscopy measurement before and after heat treatment is performed. The poor performance of PLEDs with heat treatments is observed due to the high trap density generated in the film because of the Li diffusion in the polyfluorene layer.

Original language	English
Pages (from-to)	3742-3745
Number of pages	4
Journal	Japanese Journal of Applied Physics
Volume	45
Issue number	4 B
DOIs	https://doi.org/10.1143/JJAP.45.3742
State	Published - 25 04 2006

Keywords

Cathode
LiF
PLED
Temperature
Top emission
Transparent

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10.1143/JJAP.45.3742

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Liu, K. C., Teng, C. W., Lee, C. C., Cheng, K. Y., Lu, Y. H., Liu, W. T., Chen, C. C., & Chen, L. C. (2006). Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices. Japanese Journal of Applied Physics, 45(4 B), 3742-3745. https://doi.org/10.1143/JJAP.45.3742

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title = "Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices",

abstract = "Top emission polymer light-emitting devices (PLEDs) with different heat treatments are investigated. Due to the high work function of an indium-tin-oxide (ITO) cathode as a top electrode, LiF is employed as an interlayer to increase electron injection. The PLEDs fabricated at room temperature show better electrical and optical characteristics such as current density-voltage, luminance, and current efficiency, etc., than that of PLED devices with heat treatment. To investigate the Li diffusion in the polyfluorene layer, X-ray photoelectron spectroscopy measurement before and after heat treatment is performed. The poor performance of PLEDs with heat treatments is observed due to the high trap density generated in the film because of the Li diffusion in the polyfluorene layer.",

keywords = "Cathode, LiF, PLED, Temperature, Top emission, Transparent",

author = "Liu, \{K. C.\} and Teng, \{C. W.\} and Lee, \{C. C.\} and Cheng, \{K. Y.\} and Lu, \{Y. H.\} and Liu, \{W. T.\} and Chen, \{C. C.\} and Chen, \{L. C.\}",

year = "2006",

month = apr,

day = "25",

doi = "10.1143/JJAP.45.3742",

language = "英语",

volume = "45",

pages = "3742--3745",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

publisher = "Institute of Physics",

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Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices. / Liu, K. C.; Teng, C. W.; Lee, C. C. et al.
In: Japanese Journal of Applied Physics, Vol. 45, No. 4 B, 25.04.2006, p. 3742-3745.

Research output: Contribution to journal › Journal Article › peer-review

TY - JOUR

T1 - Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices

AU - Liu, K. C.

AU - Teng, C. W.

AU - Lee, C. C.

AU - Cheng, K. Y.

AU - Lu, Y. H.

AU - Liu, W. T.

AU - Chen, C. C.

AU - Chen, L. C.

PY - 2006/4/25

Y1 - 2006/4/25

N2 - Top emission polymer light-emitting devices (PLEDs) with different heat treatments are investigated. Due to the high work function of an indium-tin-oxide (ITO) cathode as a top electrode, LiF is employed as an interlayer to increase electron injection. The PLEDs fabricated at room temperature show better electrical and optical characteristics such as current density-voltage, luminance, and current efficiency, etc., than that of PLED devices with heat treatment. To investigate the Li diffusion in the polyfluorene layer, X-ray photoelectron spectroscopy measurement before and after heat treatment is performed. The poor performance of PLEDs with heat treatments is observed due to the high trap density generated in the film because of the Li diffusion in the polyfluorene layer.

AB - Top emission polymer light-emitting devices (PLEDs) with different heat treatments are investigated. Due to the high work function of an indium-tin-oxide (ITO) cathode as a top electrode, LiF is employed as an interlayer to increase electron injection. The PLEDs fabricated at room temperature show better electrical and optical characteristics such as current density-voltage, luminance, and current efficiency, etc., than that of PLED devices with heat treatment. To investigate the Li diffusion in the polyfluorene layer, X-ray photoelectron spectroscopy measurement before and after heat treatment is performed. The poor performance of PLEDs with heat treatments is observed due to the high trap density generated in the film because of the Li diffusion in the polyfluorene layer.

KW - Cathode

KW - LiF

KW - PLED

KW - Temperature

KW - Top emission

KW - Transparent

UR - https://www.scopus.com/pages/publications/33646901856

U2 - 10.1143/JJAP.45.3742

DO - 10.1143/JJAP.45.3742

M3 - 文章

AN - SCOPUS:33646901856

SN - 0021-4922

VL - 45

SP - 3742

EP - 3745

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 4 B

ER -

Experimental study of chemical reaction between LiF and polyflourene interface during sputtering indium-tin oxide cathode for top emission polymer light emitting devices

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Keywords

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