Microporous polymer films for enhancing light extraction of white-light organic light-emitting diodes

Bao Dong To; Hsin Chu Chen; Duc Dung Nguyen; Wen Yung Yeh; Jeng Rong Ho; Hung Chih Kan; Chia Chen Hsu

doi:10.1016/j.orgel.2018.05.001

Microporous polymer films for enhancing light extraction of white-light organic light-emitting diodes

Bao Dong To, Hsin Chu Chen, Duc Dung Nguyen, Wen Yung Yeh, Jeng Rong Ho, Hung Chih Kan, Chia Chen Hsu^*

^*Corresponding author for this work

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

13 Scopus citations

Abstract

In this study, a new, facile, and low-cost approach was proposed to fabricate microporous polymer thin films (MPFs) for enhancing the light extraction of white-light organic light-emitting diodes (WLOLED). MPFs were fabricated by blending polymers with starch particles, spin-coating the blended polymer to a polyethylene terephthalate (PET) substrate, and then removing starch particles through an acid hydrolysis process. The final product was attached to the rear of the glass substrate of a WLOLED. MPF structures scattered emitted photons inside the OLED device and reduced light trapped in the substrate mode. Therefore, the maximum outcoupling efficiency improvement was 49%; approximately 69% of the substrate-mode light was extracted; and the color rendering index of the WLOLED was higher than that of the device without MPF. MPFs with a large area (>20 × 20 cm²) can be easily fabricated through the proposed method.

Original language	English
Pages (from-to)	164-170
Number of pages	7
Journal	Organic Electronics
Volume	59
DOIs	https://doi.org/10.1016/j.orgel.2018.05.001
State	Published - 08 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Light extraction
Microporous polymer
Organic light-emitting diodes
Starch particle

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title = "Microporous polymer films for enhancing light extraction of white-light organic light-emitting diodes",

abstract = "In this study, a new, facile, and low-cost approach was proposed to fabricate microporous polymer thin films (MPFs) for enhancing the light extraction of white-light organic light-emitting diodes (WLOLED). MPFs were fabricated by blending polymers with starch particles, spin-coating the blended polymer to a polyethylene terephthalate (PET) substrate, and then removing starch particles through an acid hydrolysis process. The final product was attached to the rear of the glass substrate of a WLOLED. MPF structures scattered emitted photons inside the OLED device and reduced light trapped in the substrate mode. Therefore, the maximum outcoupling efficiency improvement was 49%; approximately 69% of the substrate-mode light was extracted; and the color rendering index of the WLOLED was higher than that of the device without MPF. MPFs with a large area (>20 × 20 cm2) can be easily fabricated through the proposed method.",

keywords = "Light extraction, Microporous polymer, Organic light-emitting diodes, Starch particle",

author = "To, {Bao Dong} and Chen, {Hsin Chu} and Nguyen, {Duc Dung} and Yeh, {Wen Yung} and Ho, {Jeng Rong} and Kan, {Hung Chih} and Hsu, {Chia Chen}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = aug,

doi = "10.1016/j.orgel.2018.05.001",

language = "英语",

volume = "59",

pages = "164--170",

journal = "Organic Electronics",

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TY - JOUR

T1 - Microporous polymer films for enhancing light extraction of white-light organic light-emitting diodes

AU - To, Bao Dong

AU - Chen, Hsin Chu

AU - Nguyen, Duc Dung

AU - Yeh, Wen Yung

AU - Ho, Jeng Rong

AU - Kan, Hung Chih

AU - Hsu, Chia Chen

PY - 2018/8

Y1 - 2018/8

N2 - In this study, a new, facile, and low-cost approach was proposed to fabricate microporous polymer thin films (MPFs) for enhancing the light extraction of white-light organic light-emitting diodes (WLOLED). MPFs were fabricated by blending polymers with starch particles, spin-coating the blended polymer to a polyethylene terephthalate (PET) substrate, and then removing starch particles through an acid hydrolysis process. The final product was attached to the rear of the glass substrate of a WLOLED. MPF structures scattered emitted photons inside the OLED device and reduced light trapped in the substrate mode. Therefore, the maximum outcoupling efficiency improvement was 49%; approximately 69% of the substrate-mode light was extracted; and the color rendering index of the WLOLED was higher than that of the device without MPF. MPFs with a large area (>20 × 20 cm2) can be easily fabricated through the proposed method.

AB - In this study, a new, facile, and low-cost approach was proposed to fabricate microporous polymer thin films (MPFs) for enhancing the light extraction of white-light organic light-emitting diodes (WLOLED). MPFs were fabricated by blending polymers with starch particles, spin-coating the blended polymer to a polyethylene terephthalate (PET) substrate, and then removing starch particles through an acid hydrolysis process. The final product was attached to the rear of the glass substrate of a WLOLED. MPF structures scattered emitted photons inside the OLED device and reduced light trapped in the substrate mode. Therefore, the maximum outcoupling efficiency improvement was 49%; approximately 69% of the substrate-mode light was extracted; and the color rendering index of the WLOLED was higher than that of the device without MPF. MPFs with a large area (>20 × 20 cm2) can be easily fabricated through the proposed method.

KW - Light extraction

KW - Microporous polymer

KW - Organic light-emitting diodes

KW - Starch particle

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U2 - 10.1016/j.orgel.2018.05.001

DO - 10.1016/j.orgel.2018.05.001

M3 - 文章

AN - SCOPUS:85046760494

SN - 1566-1199

VL - 59

SP - 164

EP - 170

JO - Organic Electronics

JF - Organic Electronics

ER -

Microporous polymer films for enhancing light extraction of white-light organic light-emitting diodes

Abstract

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Keywords

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