High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off

Jong Uk Kim; Michael Y. Wong; Shiv Kumar; Oliver G. Hayes; Finlay Duncan; Chin Yiu Chan; Ben Yiu Wing Wong; Hao Ye; Lin Song Cui; Hajime Nakanotani; Eli Zysman-Colman; Chihaya Adachi

doi:10.1246/cl.190412

High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off

Jong Uk Kim, Michael Y. Wong, Shiv Kumar, Oliver G. Hayes, Finlay Duncan, Chin Yiu Chan, Ben Yiu Wing Wong, Hao Ye, Lin Song Cui, Hajime Nakanotani, Eli Zysman-Colman, Chihaya Adachi

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

4 Citations (Scopus)

Abstract

We designed and synthesized two new ambipolar host materials, namely CzPO and Cz3PO. Combining CzPO and Cz3PO with CzTRZ2 as the emitter resulted in improved maximum external quantum efficiencies of 13.1% and 13.2%, respectively, together with small efficiency roll-offs, while the device based on bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO) as host showed a much more pronounced efficiency roll-off.

Original language	English
Pages (from-to)	1225-1228
Number of pages	4
Journal	Chemistry Letters
Volume	48
Issue number	10
DOIs	https://doi.org/10.1246/cl.190412
Publication status	Published - 2019

All Science Journal Classification (ASJC) codes

Chemistry(all)

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Kim, J. U., Wong, M. Y., Kumar, S., Hayes, O. G., Duncan, F., Chan, C. Y., Wong, B. Y. W., Ye, H., Cui, L. S., Nakanotani, H., Zysman-Colman, E., & Adachi, C. (2019). High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off. Chemistry Letters, 48(10), 1225-1228. https://doi.org/10.1246/cl.190412

High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off. / Kim, Jong Uk; Wong, Michael Y.; Kumar, Shiv et al.
In: Chemistry Letters, Vol. 48, No. 10, 2019, p. 1225-1228.

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

Kim, JU, Wong, MY, Kumar, S, Hayes, OG, Duncan, F, Chan, CY, Wong, BYW, Ye, H, Cui, LS, Nakanotani, H, Zysman-Colman, E & Adachi, C 2019, 'High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off', Chemistry Letters, vol. 48, no. 10, pp. 1225-1228. https://doi.org/10.1246/cl.190412

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title = "High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off",

abstract = "We designed and synthesized two new ambipolar host materials, namely CzPO and Cz3PO. Combining CzPO and Cz3PO with CzTRZ2 as the emitter resulted in improved maximum external quantum efficiencies of 13.1% and 13.2%, respectively, together with small efficiency roll-offs, while the device based on bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO) as host showed a much more pronounced efficiency roll-off.",

author = "Kim, {Jong Uk} and Wong, {Michael Y.} and Shiv Kumar and Hayes, {Oliver G.} and Finlay Duncan and Chan, {Chin Yiu} and Wong, {Ben Yiu Wing} and Hao Ye and Cui, {Lin Song} and Hajime Nakanotani and Eli Zysman-Colman and Chihaya Adachi",

note = "Funding Information: This work was supported by a grant fund from the Regional Innovation Eco-System Program sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, JST ERATO (Grant Number JPMJER1305), the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) sponsored by MEXT, and JSPS KAKENHI (Grant Numbers 00H00000). EZ-C the EPSRC (EP/R035164/1; EP/P010482/1) and the University of St.Andrews and for SK the European Commission Marie Sk{\l}odowska-Curie Individual Fellowship (MCIF; No. 748430- THF-OLED). Funding Information: This work was supported by a grant fund from the Regional Innovation Eco-System Program sponsored by the Ministry Figure 6. Current densityvoltage (JV ) characteristics of (a) hole-only devices (HODs) and (b) electron-only devices (EODs) based on the CzPO, Cz3PO and DPEPO hosts. Publisher Copyright: {\textcopyright} 2019 The Chemical Society of Japan.",

year = "2019",

doi = "10.1246/cl.190412",

language = "English",

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T1 - High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off

AU - Kim, Jong Uk

AU - Wong, Michael Y.

AU - Kumar, Shiv

AU - Hayes, Oliver G.

AU - Duncan, Finlay

AU - Chan, Chin Yiu

AU - Wong, Ben Yiu Wing

AU - Ye, Hao

AU - Cui, Lin Song

AU - Nakanotani, Hajime

AU - Zysman-Colman, Eli

AU - Adachi, Chihaya

N1 - Funding Information: This work was supported by a grant fund from the Regional Innovation Eco-System Program sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, JST ERATO (Grant Number JPMJER1305), the International Institute for Carbon Neutral Energy Research (WPI-I2CNER) sponsored by MEXT, and JSPS KAKENHI (Grant Numbers 00H00000). EZ-C the EPSRC (EP/R035164/1; EP/P010482/1) and the University of St.Andrews and for SK the European Commission Marie Skłodowska-Curie Individual Fellowship (MCIF; No. 748430- THF-OLED). Funding Information: This work was supported by a grant fund from the Regional Innovation Eco-System Program sponsored by the Ministry Figure 6. Current densityvoltage (JV ) characteristics of (a) hole-only devices (HODs) and (b) electron-only devices (EODs) based on the CzPO, Cz3PO and DPEPO hosts. Publisher Copyright: © 2019 The Chemical Society of Japan.

PY - 2019

Y1 - 2019

N2 - We designed and synthesized two new ambipolar host materials, namely CzPO and Cz3PO. Combining CzPO and Cz3PO with CzTRZ2 as the emitter resulted in improved maximum external quantum efficiencies of 13.1% and 13.2%, respectively, together with small efficiency roll-offs, while the device based on bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO) as host showed a much more pronounced efficiency roll-off.

AB - We designed and synthesized two new ambipolar host materials, namely CzPO and Cz3PO. Combining CzPO and Cz3PO with CzTRZ2 as the emitter resulted in improved maximum external quantum efficiencies of 13.1% and 13.2%, respectively, together with small efficiency roll-offs, while the device based on bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO) as host showed a much more pronounced efficiency roll-off.

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High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off

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