Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications

Seungjin Lee; Thanh Luan Nguyen; Sang Yun Lee; Chung Hyeon Jang; Bo Ram Lee; Eui Dae Jung; Song Yi Park; Yung Jin Yoon; Jin Young Kim; Han Young Woo; Myoung Hoon Song

doi:10.1002/adma.201706034

Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications

Seungjin Lee, Thanh Luan Nguyen, Sang Yun Lee, Chung Hyeon Jang, Bo Ram Lee, Eui Dae Jung, Song Yi Park, Yung Jin Yoon, Jin Young Kim, Han Young Woo, Myoung Hoon Song

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

17 Citations (Scopus)

Abstract

Conjugated polyelectrolytes (CPEs) with π-delocalized main backbones and ionic pendant groups are intensively studied as interfacial layers for efficient polymer-based optoelectronic devices (POEDs) because they facilitate facile control of charge injection/extraction barriers. Here, a simple and effective method of performing precise interfacial energy level adjustment is presented by employing CPEs with different thicknesses and various ion densities under electric poling to realize efficient charge injection/extraction of POEDs. The effects of the CPE ion densities and electric (positive or negative) poling on the energy level tuning process are investigated by measuring the open-circuit voltages and current densities of devices with the structure indium tin oxide/zinc oxide/CPE/organic active layer/molybdenum oxide/gold while changing the CPE film thickness. The performances of inverted polymer light-emitting diodes and inverted polymer solar cells are remarkably improved by precisely controlling the interfacial energy level matching using optimum CPE conditions.

Original language	English
Article number	1706034
Journal	Advanced Materials
Volume	30
Issue number	14
DOIs	https://doi.org/10.1002/adma.201706034
Publication status	Published - 2018 Apr 5

Bibliographical note

Funding Information:
S.L. and T.L.N. contributed equally to this work. This work was supported by the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911, 2012M3A6A7055540). This work was financially supported by the KIST-UNIST partnership program (1.160097.01/2.160482.01) and Mid-Career Research Program (2015R1A2A2A01003263).

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

charge injection/extraction
conjugated polyelectrolytes (CPEs)
electric poling
ion density
polymer optoelectronic devices (POEDs)

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1002/adma.201706034

Cite this

Lee, S., Nguyen, T. L., Lee, S. Y., Jang, C. H., Lee, B. R., Jung, E. D., Park, S. Y., Yoon, Y. J., Kim, J. Y., Woo, H. Y., & Song, M. H. (2018). Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications. Advanced Materials, 30(14), Article 1706034. https://doi.org/10.1002/adma.201706034

Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications. / Lee, Seungjin; Nguyen, Thanh Luan; Lee, Sang Yun et al.
In: Advanced Materials, Vol. 30, No. 14, 1706034, 05.04.2018.

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

Lee, S, Nguyen, TL, Lee, SY, Jang, CH, Lee, BR, Jung, ED, Park, SY, Yoon, YJ, Kim, JY, Woo, HY & Song, MH 2018, 'Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications', Advanced Materials, vol. 30, no. 14, 1706034. https://doi.org/10.1002/adma.201706034

@article{7d732f94daf74223aa4684f871f5ec72,

title = "Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications",

abstract = "Conjugated polyelectrolytes (CPEs) with π-delocalized main backbones and ionic pendant groups are intensively studied as interfacial layers for efficient polymer-based optoelectronic devices (POEDs) because they facilitate facile control of charge injection/extraction barriers. Here, a simple and effective method of performing precise interfacial energy level adjustment is presented by employing CPEs with different thicknesses and various ion densities under electric poling to realize efficient charge injection/extraction of POEDs. The effects of the CPE ion densities and electric (positive or negative) poling on the energy level tuning process are investigated by measuring the open-circuit voltages and current densities of devices with the structure indium tin oxide/zinc oxide/CPE/organic active layer/molybdenum oxide/gold while changing the CPE film thickness. The performances of inverted polymer light-emitting diodes and inverted polymer solar cells are remarkably improved by precisely controlling the interfacial energy level matching using optimum CPE conditions.",

keywords = "charge injection/extraction, conjugated polyelectrolytes (CPEs), electric poling, ion density, polymer optoelectronic devices (POEDs)",

author = "Seungjin Lee and Nguyen, {Thanh Luan} and Lee, {Sang Yun} and Jang, {Chung Hyeon} and Lee, {Bo Ram} and Jung, {Eui Dae} and Park, {Song Yi} and Yoon, {Yung Jin} and Kim, {Jin Young} and Woo, {Han Young} and Song, {Myoung Hoon}",

note = "Funding Information: S.L. and T.L.N. contributed equally to this work. This work was supported by the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911, 2012M3A6A7055540). This work was financially supported by the KIST-UNIST partnership program (1.160097.01/2.160482.01) and Mid-Career Research Program (2015R1A2A2A01003263). Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = apr,

day = "5",

doi = "10.1002/adma.201706034",

language = "English",

volume = "30",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "14",

}

TY - JOUR

T1 - Conjugated Polyelectrolytes Bearing Various Ion Densities

T2 - Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications

AU - Lee, Seungjin

AU - Nguyen, Thanh Luan

AU - Lee, Sang Yun

AU - Jang, Chung Hyeon

AU - Lee, Bo Ram

AU - Jung, Eui Dae

AU - Park, Song Yi

AU - Yoon, Yung Jin

AU - Kim, Jin Young

AU - Woo, Han Young

AU - Song, Myoung Hoon

N1 - Funding Information: S.L. and T.L.N. contributed equally to this work. This work was supported by the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911, 2012M3A6A7055540). This work was financially supported by the KIST-UNIST partnership program (1.160097.01/2.160482.01) and Mid-Career Research Program (2015R1A2A2A01003263). Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/4/5

Y1 - 2018/4/5

N2 - Conjugated polyelectrolytes (CPEs) with π-delocalized main backbones and ionic pendant groups are intensively studied as interfacial layers for efficient polymer-based optoelectronic devices (POEDs) because they facilitate facile control of charge injection/extraction barriers. Here, a simple and effective method of performing precise interfacial energy level adjustment is presented by employing CPEs with different thicknesses and various ion densities under electric poling to realize efficient charge injection/extraction of POEDs. The effects of the CPE ion densities and electric (positive or negative) poling on the energy level tuning process are investigated by measuring the open-circuit voltages and current densities of devices with the structure indium tin oxide/zinc oxide/CPE/organic active layer/molybdenum oxide/gold while changing the CPE film thickness. The performances of inverted polymer light-emitting diodes and inverted polymer solar cells are remarkably improved by precisely controlling the interfacial energy level matching using optimum CPE conditions.

AB - Conjugated polyelectrolytes (CPEs) with π-delocalized main backbones and ionic pendant groups are intensively studied as interfacial layers for efficient polymer-based optoelectronic devices (POEDs) because they facilitate facile control of charge injection/extraction barriers. Here, a simple and effective method of performing precise interfacial energy level adjustment is presented by employing CPEs with different thicknesses and various ion densities under electric poling to realize efficient charge injection/extraction of POEDs. The effects of the CPE ion densities and electric (positive or negative) poling on the energy level tuning process are investigated by measuring the open-circuit voltages and current densities of devices with the structure indium tin oxide/zinc oxide/CPE/organic active layer/molybdenum oxide/gold while changing the CPE film thickness. The performances of inverted polymer light-emitting diodes and inverted polymer solar cells are remarkably improved by precisely controlling the interfacial energy level matching using optimum CPE conditions.

KW - charge injection/extraction

KW - conjugated polyelectrolytes (CPEs)

KW - electric poling

KW - ion density

KW - polymer optoelectronic devices (POEDs)

UR - http://www.scopus.com/inward/record.url?scp=85042119156&partnerID=8YFLogxK

U2 - 10.1002/adma.201706034

DO - 10.1002/adma.201706034

M3 - Article

C2 - 29450928

AN - SCOPUS:85042119156

SN - 0935-9648

VL - 30

JO - Advanced Materials

JF - Advanced Materials

IS - 14

M1 - 1706034

ER -

Conjugated Polyelectrolytes Bearing Various Ion Densities: Spontaneous Dipole Generation, Poling-Induced Dipole Alignment, and Interfacial Energy Barrier Control for Optoelectronic Device Applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this