Improving light efficiency of white polymer light emitting diodes by introducing the TPBi exciton protection layer

Sang Baie Shin; Su Choel Gong; Hak Min Lee; Ji Geun Jang; Myoung Seon Gong; Sang Ouk Ryu; Jun Yeop Lee; Young Chul Chang; Ho Jung Chang

doi:10.1016/j.tsf.2009.02.027

Improving light efficiency of white polymer light emitting diodes by introducing the TPBi exciton protection layer

Sang Baie Shin
, Su Choel Gong
, Hak Min Lee
, Ji Geun Jang
, Myoung Seon Gong
, Sang Ouk Ryu
, Jun Yeop Lee
, Young Chul Chang
, Ho Jung Chang

Dankook University
Korea University of Technology and Education

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

19 Scopus citations

Abstract

We fabricated and evaluated the efficient white polymer light emitting diode (WPLED) by introducing TPBi exciton protection layer with ITO/PEDOT:PSS/PFO:MEH-PPV/TPBi/LiF/Al structure. PFO and MEH-PPV were prepared by the spin coating as the light emitting host and guest materials. TPBi was used as exciton protection material. The dependences of the MEH-PPV concentrations into the PFO (PFO:MEH-PPV) on the optical and electrical properties of the WPLEDs were investigated. The effect of the introduction of TPBi layer was studied by means of the property comparison between the samples with and without TPBi layer. The maximum luminance with 1480 cd/m² was obtained at the MEH-PPV concentration of 1.0 wt.% for the ITO/PEDOT:PSS/PFO:MEH-PPV/LiF/Al structure. In addition, the maximum luminance and current efficiency of the WPLED with TPBi layer were 7560 cd/m² at 12 V and 7.8 cd/A at 10 cd/m², respectively. The CIE color coordinates for WPLED with 1.0 wt.% MEH-PPV concentration was found to be (x, y) = (0.36, 0.33), showing pure white color.

Original language	English
Pages (from-to)	4143-4146
Number of pages	4
Journal	Thin Solid Films
Volume	517
Issue number	14
DOIs	https://doi.org/10.1016/j.tsf.2009.02.027
State	Published - 29 May 2009
Externally published	Yes

Keywords

Exciton protection layer
Luminance
MEH-PPV
PFO
Spin coating
TPBi
White polymer light emitting diode

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10.1016/j.tsf.2009.02.027

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@article{14284a0315444e59b2bf8854cf65a958,

title = "Improving light efficiency of white polymer light emitting diodes by introducing the TPBi exciton protection layer",

abstract = "We fabricated and evaluated the efficient white polymer light emitting diode (WPLED) by introducing TPBi exciton protection layer with ITO/PEDOT:PSS/PFO:MEH-PPV/TPBi/LiF/Al structure. PFO and MEH-PPV were prepared by the spin coating as the light emitting host and guest materials. TPBi was used as exciton protection material. The dependences of the MEH-PPV concentrations into the PFO (PFO:MEH-PPV) on the optical and electrical properties of the WPLEDs were investigated. The effect of the introduction of TPBi layer was studied by means of the property comparison between the samples with and without TPBi layer. The maximum luminance with 1480 cd/m2 was obtained at the MEH-PPV concentration of 1.0 wt.\% for the ITO/PEDOT:PSS/PFO:MEH-PPV/LiF/Al structure. In addition, the maximum luminance and current efficiency of the WPLED with TPBi layer were 7560 cd/m2 at 12 V and 7.8 cd/A at 10 cd/m2, respectively. The CIE color coordinates for WPLED with 1.0 wt.\% MEH-PPV concentration was found to be (x, y) = (0.36, 0.33), showing pure white color.",

keywords = "Exciton protection layer, Luminance, MEH-PPV, PFO, Spin coating, TPBi, White polymer light emitting diode",

author = "Shin, \{Sang Baie\} and Gong, \{Su Choel\} and Lee, \{Hak Min\} and Jang, \{Ji Geun\} and Gong, \{Myoung Seon\} and Ryu, \{Sang Ouk\} and Lee, \{Jun Yeop\} and Chang, \{Young Chul\} and Chang, \{Ho Jung\}",

year = "2009",

month = may,

day = "29",

doi = "10.1016/j.tsf.2009.02.027",

language = "English",

volume = "517",

pages = "4143--4146",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

number = "14",

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TY - JOUR

T1 - Improving light efficiency of white polymer light emitting diodes by introducing the TPBi exciton protection layer

AU - Shin, Sang Baie

AU - Gong, Su Choel

AU - Lee, Hak Min

AU - Jang, Ji Geun

AU - Gong, Myoung Seon

AU - Ryu, Sang Ouk

AU - Lee, Jun Yeop

AU - Chang, Young Chul

AU - Chang, Ho Jung

PY - 2009/5/29

Y1 - 2009/5/29

N2 - We fabricated and evaluated the efficient white polymer light emitting diode (WPLED) by introducing TPBi exciton protection layer with ITO/PEDOT:PSS/PFO:MEH-PPV/TPBi/LiF/Al structure. PFO and MEH-PPV were prepared by the spin coating as the light emitting host and guest materials. TPBi was used as exciton protection material. The dependences of the MEH-PPV concentrations into the PFO (PFO:MEH-PPV) on the optical and electrical properties of the WPLEDs were investigated. The effect of the introduction of TPBi layer was studied by means of the property comparison between the samples with and without TPBi layer. The maximum luminance with 1480 cd/m2 was obtained at the MEH-PPV concentration of 1.0 wt.% for the ITO/PEDOT:PSS/PFO:MEH-PPV/LiF/Al structure. In addition, the maximum luminance and current efficiency of the WPLED with TPBi layer were 7560 cd/m2 at 12 V and 7.8 cd/A at 10 cd/m2, respectively. The CIE color coordinates for WPLED with 1.0 wt.% MEH-PPV concentration was found to be (x, y) = (0.36, 0.33), showing pure white color.

AB - We fabricated and evaluated the efficient white polymer light emitting diode (WPLED) by introducing TPBi exciton protection layer with ITO/PEDOT:PSS/PFO:MEH-PPV/TPBi/LiF/Al structure. PFO and MEH-PPV were prepared by the spin coating as the light emitting host and guest materials. TPBi was used as exciton protection material. The dependences of the MEH-PPV concentrations into the PFO (PFO:MEH-PPV) on the optical and electrical properties of the WPLEDs were investigated. The effect of the introduction of TPBi layer was studied by means of the property comparison between the samples with and without TPBi layer. The maximum luminance with 1480 cd/m2 was obtained at the MEH-PPV concentration of 1.0 wt.% for the ITO/PEDOT:PSS/PFO:MEH-PPV/LiF/Al structure. In addition, the maximum luminance and current efficiency of the WPLED with TPBi layer were 7560 cd/m2 at 12 V and 7.8 cd/A at 10 cd/m2, respectively. The CIE color coordinates for WPLED with 1.0 wt.% MEH-PPV concentration was found to be (x, y) = (0.36, 0.33), showing pure white color.

KW - Exciton protection layer

KW - Luminance

KW - MEH-PPV

KW - PFO

KW - Spin coating

KW - TPBi

KW - White polymer light emitting diode

UR - https://www.scopus.com/pages/publications/65149090547

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DO - 10.1016/j.tsf.2009.02.027

M3 - Article

AN - SCOPUS:65149090547

SN - 0040-6090

VL - 517

SP - 4143

EP - 4146

JO - Thin Solid Films

JF - Thin Solid Films

IS - 14

ER -

Improving light efficiency of white polymer light emitting diodes by introducing the TPBi exciton protection layer

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Keywords

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