Deep red donor-acceptor type thermally activated delayed fluorescence emitter with o-carborane as an acceptor

Kiun Cheong; Seung Chan Kim; Jun Yeob Lee

doi:10.1016/j.dyepig.2023.111278

Deep red donor-acceptor type thermally activated delayed fluorescence emitter with o-carborane as an acceptor

Kiun Cheong
, Seung Chan Kim
, Jun Yeob Lee

Department of Chemical Engineering

Sungkyunkwan University

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

3 Scopus citations

Abstract

o-Carborane is a strong acceptor having a three-dimensional structure of 10 borons and 2 carbons. Thus, this study explores the potential of using o-carborane as a new acceptor in designing donor-acceptor (D-A) type thermally activated delayed fluorescence (TADF) materials. Accordingly, a D-A type TADF emitter was designed using o-carborane as an acceptor and 9,9-dimethyl-9,10-dihydroacridine as a donor. The TADF emitter exhibited deep red emission with a peak wavelength of 642 nm as proven by delayed fluorescence in the transient photoluminescence analysis. Deep red emission with a peak wavelength of 651 nm was also observed in both doped and non-doped devices, as demonstrated using electroluminescence devices. Finally, the maximum external quantum efficiency of DMAC-oCB devices was found to be 5.2% in the doped device and 2.1% in the non-doped device.

Original language	English
Article number	111278
Journal	Dyes and Pigments
Volume	215
DOIs	https://doi.org/10.1016/j.dyepig.2023.111278
State	Published - Jul 2023

Keywords

Carborane
Delayed fluorescence
Emitter
OLEDs

Access to Document

10.1016/j.dyepig.2023.111278

Cite this

@article{7bdad63aaec54a399af66a2b26a57b43,

title = "Deep red donor-acceptor type thermally activated delayed fluorescence emitter with o-carborane as an acceptor",

abstract = "o-Carborane is a strong acceptor having a three-dimensional structure of 10 borons and 2 carbons. Thus, this study explores the potential of using o-carborane as a new acceptor in designing donor-acceptor (D-A) type thermally activated delayed fluorescence (TADF) materials. Accordingly, a D-A type TADF emitter was designed using o-carborane as an acceptor and 9,9-dimethyl-9,10-dihydroacridine as a donor. The TADF emitter exhibited deep red emission with a peak wavelength of 642 nm as proven by delayed fluorescence in the transient photoluminescence analysis. Deep red emission with a peak wavelength of 651 nm was also observed in both doped and non-doped devices, as demonstrated using electroluminescence devices. Finally, the maximum external quantum efficiency of DMAC-oCB devices was found to be 5.2\% in the doped device and 2.1\% in the non-doped device.",

keywords = "Carborane, Delayed fluorescence, Emitter, OLEDs",

author = "Kiun Cheong and Kim, \{Seung Chan\} and Lee, \{Jun Yeob\}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = jul,

doi = "10.1016/j.dyepig.2023.111278",

language = "English",

volume = "215",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Deep red donor-acceptor type thermally activated delayed fluorescence emitter with o-carborane as an acceptor

AU - Cheong, Kiun

AU - Kim, Seung Chan

AU - Lee, Jun Yeob

PY - 2023/7

Y1 - 2023/7

N2 - o-Carborane is a strong acceptor having a three-dimensional structure of 10 borons and 2 carbons. Thus, this study explores the potential of using o-carborane as a new acceptor in designing donor-acceptor (D-A) type thermally activated delayed fluorescence (TADF) materials. Accordingly, a D-A type TADF emitter was designed using o-carborane as an acceptor and 9,9-dimethyl-9,10-dihydroacridine as a donor. The TADF emitter exhibited deep red emission with a peak wavelength of 642 nm as proven by delayed fluorescence in the transient photoluminescence analysis. Deep red emission with a peak wavelength of 651 nm was also observed in both doped and non-doped devices, as demonstrated using electroluminescence devices. Finally, the maximum external quantum efficiency of DMAC-oCB devices was found to be 5.2% in the doped device and 2.1% in the non-doped device.

AB - o-Carborane is a strong acceptor having a three-dimensional structure of 10 borons and 2 carbons. Thus, this study explores the potential of using o-carborane as a new acceptor in designing donor-acceptor (D-A) type thermally activated delayed fluorescence (TADF) materials. Accordingly, a D-A type TADF emitter was designed using o-carborane as an acceptor and 9,9-dimethyl-9,10-dihydroacridine as a donor. The TADF emitter exhibited deep red emission with a peak wavelength of 642 nm as proven by delayed fluorescence in the transient photoluminescence analysis. Deep red emission with a peak wavelength of 651 nm was also observed in both doped and non-doped devices, as demonstrated using electroluminescence devices. Finally, the maximum external quantum efficiency of DMAC-oCB devices was found to be 5.2% in the doped device and 2.1% in the non-doped device.

KW - Carborane

KW - Delayed fluorescence

KW - Emitter

KW - OLEDs

UR - https://www.scopus.com/pages/publications/85151256691

U2 - 10.1016/j.dyepig.2023.111278

DO - 10.1016/j.dyepig.2023.111278

M3 - Article

AN - SCOPUS:85151256691

SN - 0143-7208

VL - 215

JO - Dyes and Pigments

JF - Dyes and Pigments

M1 - 111278

ER -

Deep red donor-acceptor type thermally activated delayed fluorescence emitter with o-carborane as an acceptor

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this