Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

Chan Hee Lee; Shin Hyung Choi; Sung Joon Oh; Jun Hyeon Lee; Jae Won Shim; Chihaya Adachi; Sae Youn Lee

doi:10.1039/d0ra07865d

Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

Chan Hee Lee
, Shin Hyung Choi
, Sung Joon Oh
, Jun Hyeon Lee
, Jae Won Shim
, Chihaya Adachi
, Sae Youn Lee

Department of Energy and Materials Engineering

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

8 Scopus citations

Abstract

In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.

Original language	English
Pages (from-to)	42897-42902
Number of pages	6
Journal	RSC Advances
Volume	10
Issue number	70
DOIs	https://doi.org/10.1039/d0ra07865d
State	Published - 26 Nov 2020

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@article{48b97ba297e54c5696c65613ef97cfb9,

title = "Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation",

abstract = "In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87\% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8\% for blue and green emissions.",

author = "Lee, \{Chan Hee\} and Choi, \{Shin Hyung\} and Oh, \{Sung Joon\} and Lee, \{Jun Hyeon\} and Shim, \{Jae Won\} and Chihaya Adachi and Lee, \{Sae Youn\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2020",

month = nov,

day = "26",

doi = "10.1039/d0ra07865d",

language = "English",

volume = "10",

pages = "42897--42902",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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}

TY - JOUR

T1 - Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

AU - Lee, Chan Hee

AU - Choi, Shin Hyung

AU - Oh, Sung Joon

AU - Lee, Jun Hyeon

AU - Shim, Jae Won

AU - Adachi, Chihaya

AU - Lee, Sae Youn

PY - 2020/11/26

Y1 - 2020/11/26

N2 - In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.

AB - In this study, we report new thermally activated delayed fluorescence (TADF) emitters, AcPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(9,9-dimethyl-9,10-dihydroacridine)) and PxPYM (10,10′-(pyrimidine-2,5-diylbis(4,1-phenylene))bis(10H-phenoxazine)), by employing donor units at the 2,5-positions of the pyrimidine acceptor unit. The donor-Acceptor-donor (D-A-D) units combined in the linear molecular structure of AcPYM or PxPYM enhanced the horizontally oriented alignment, and the horizontal transition dipole moments were realized by up to 87% in the host matrix. Organic light-emitting diodes (OLEDs) containing AcPYM and PxPYM emitters realized external quantum efficiencies (ηext) of 16.8% for blue and green emissions.

UR - https://www.scopus.com/pages/publications/85097825657

U2 - 10.1039/d0ra07865d

DO - 10.1039/d0ra07865d

M3 - Article

AN - SCOPUS:85097825657

SN - 2046-2069

VL - 10

SP - 42897

EP - 42902

JO - RSC Advances

JF - RSC Advances

IS - 70

ER -

Highly effective organic light-emitting diodes containing thermally activated delayed fluorescence emitters with horizontal molecular orientation

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