Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs

Jinhyo Hwang; Chae Yeong Kim; Hyunchul Kang; Ji Eun Jeong; Han Young Woo; Min Ju Cho; Sungnam Park; Dong Hoon Choi

doi:10.1039/d0tc04366d

Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs

Jinhyo Hwang, Chae Yeong Kim, Hyunchul Kang, Ji Eun Jeong, Han Young Woo, Min Ju Cho, Sungnam Park, Dong Hoon Choi

Department of Chemistry

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

11 Citations (Scopus)

Abstract

In this study, two polymeric host materials, P(NmCP) and P(mCP), were synthesized, and high-performing sky-blue and green thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs) were achieved. The simple structure polymer host was designed by inserting a pyridine group into the core of P(NmCP) and an electron-donating phenyl group into the core of P(mCP). The two polymeric hosts exhibited high triplet energies (T1 = 3.04 eV for P(NmCP) and 3.05 eV for P(mCP)), which were sufficiently high to realize blue and green TADF-OLEDs. In brief, solution-processed OLEDs with an emissive layer bearing P(NmCP) as a bipolar electron host exhibited remarkable performance with a maximum current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of 70.36 cd A-1, 63.15 lm W-1, and 20.07%, respectively, in the green-emitting device. In the blue-emitting device, we obtained a maximum CE, PE, and EQE of 27.13 cd A-1, 22.30 lm W-1, and 10.70%, respectively. The polymer design with such a high T1 value is believed to be the cornerstone for implementing high-performance TADF-OLEDs via solution processing in the future. This journal is

Original language	English
Pages (from-to)	16048-16056
Number of pages	9
Journal	Journal of Materials Chemistry C
Volume	8
Issue number	45
DOIs	https://doi.org/10.1039/d0tc04366d
Publication status	Published - 2020 Dec 7

Bibliographical note

Funding Information:
The authors acknowledge the financial support from the National Research Foundation of Korea (NRF2019R1A2C2002647, NRF2019R1A6A1A11044070) and D. H. Choi particularly thanks for the support from LG Display Co. Limited (Q1927051, 2020).

Publisher Copyright:
© The Royal Society of Chemistry.

ASJC Scopus subject areas

Chemistry(all)
Materials Chemistry

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10.1039/d0tc04366d

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@article{a78dd384577f49c09c4beae5851b8c1f,

title = "Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs",

abstract = "In this study, two polymeric host materials, P(NmCP) and P(mCP), were synthesized, and high-performing sky-blue and green thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs) were achieved. The simple structure polymer host was designed by inserting a pyridine group into the core of P(NmCP) and an electron-donating phenyl group into the core of P(mCP). The two polymeric hosts exhibited high triplet energies (T1 = 3.04 eV for P(NmCP) and 3.05 eV for P(mCP)), which were sufficiently high to realize blue and green TADF-OLEDs. In brief, solution-processed OLEDs with an emissive layer bearing P(NmCP) as a bipolar electron host exhibited remarkable performance with a maximum current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of 70.36 cd A-1, 63.15 lm W-1, and 20.07%, respectively, in the green-emitting device. In the blue-emitting device, we obtained a maximum CE, PE, and EQE of 27.13 cd A-1, 22.30 lm W-1, and 10.70%, respectively. The polymer design with such a high T1 value is believed to be the cornerstone for implementing high-performance TADF-OLEDs via solution processing in the future. This journal is ",

author = "Jinhyo Hwang and Kim, {Chae Yeong} and Hyunchul Kang and Jeong, {Ji Eun} and Woo, {Han Young} and Cho, {Min Ju} and Sungnam Park and Choi, {Dong Hoon}",

note = "Funding Information: The authors acknowledge the financial support from the National Research Foundation of Korea (NRF2019R1A2C2002647, NRF2019R1A6A1A11044070) and D. H. Choi particularly thanks for the support from LG Display Co. Limited (Q1927051, 2020). Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2020",

month = dec,

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doi = "10.1039/d0tc04366d",

language = "English",

volume = "8",

pages = "16048--16056",

journal = "Journal of Materials Chemistry C",

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TY - JOUR

T1 - Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs

AU - Hwang, Jinhyo

AU - Kim, Chae Yeong

AU - Kang, Hyunchul

AU - Jeong, Ji Eun

AU - Woo, Han Young

AU - Cho, Min Ju

AU - Park, Sungnam

AU - Choi, Dong Hoon

N1 - Funding Information: The authors acknowledge the financial support from the National Research Foundation of Korea (NRF2019R1A2C2002647, NRF2019R1A6A1A11044070) and D. H. Choi particularly thanks for the support from LG Display Co. Limited (Q1927051, 2020). Publisher Copyright: © The Royal Society of Chemistry.

PY - 2020/12/7

Y1 - 2020/12/7

N2 - In this study, two polymeric host materials, P(NmCP) and P(mCP), were synthesized, and high-performing sky-blue and green thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs) were achieved. The simple structure polymer host was designed by inserting a pyridine group into the core of P(NmCP) and an electron-donating phenyl group into the core of P(mCP). The two polymeric hosts exhibited high triplet energies (T1 = 3.04 eV for P(NmCP) and 3.05 eV for P(mCP)), which were sufficiently high to realize blue and green TADF-OLEDs. In brief, solution-processed OLEDs with an emissive layer bearing P(NmCP) as a bipolar electron host exhibited remarkable performance with a maximum current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of 70.36 cd A-1, 63.15 lm W-1, and 20.07%, respectively, in the green-emitting device. In the blue-emitting device, we obtained a maximum CE, PE, and EQE of 27.13 cd A-1, 22.30 lm W-1, and 10.70%, respectively. The polymer design with such a high T1 value is believed to be the cornerstone for implementing high-performance TADF-OLEDs via solution processing in the future. This journal is

AB - In this study, two polymeric host materials, P(NmCP) and P(mCP), were synthesized, and high-performing sky-blue and green thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs) were achieved. The simple structure polymer host was designed by inserting a pyridine group into the core of P(NmCP) and an electron-donating phenyl group into the core of P(mCP). The two polymeric hosts exhibited high triplet energies (T1 = 3.04 eV for P(NmCP) and 3.05 eV for P(mCP)), which were sufficiently high to realize blue and green TADF-OLEDs. In brief, solution-processed OLEDs with an emissive layer bearing P(NmCP) as a bipolar electron host exhibited remarkable performance with a maximum current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of 70.36 cd A-1, 63.15 lm W-1, and 20.07%, respectively, in the green-emitting device. In the blue-emitting device, we obtained a maximum CE, PE, and EQE of 27.13 cd A-1, 22.30 lm W-1, and 10.70%, respectively. The polymer design with such a high T1 value is believed to be the cornerstone for implementing high-performance TADF-OLEDs via solution processing in the future. This journal is

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DO - 10.1039/d0tc04366d

M3 - Article

AN - SCOPUS:85097051470

SN - 2050-7534

VL - 8

SP - 16048

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JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 45

ER -

Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs

Abstract

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