Ideal combination of the host and dopant materials showing thermally activated delayed fluorescent behavior

Ye Ram Cho; Seung Ji Cha; Min Chul Suh

doi:10.1016/j.synthmet.2015.06.022

Ideal combination of the host and dopant materials showing thermally activated delayed fluorescent behavior

Ye Ram Cho, Seung Ji Cha, Min Chul Suh

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

11 Citations (Scopus)

Abstract

As a promising way to realize highly efficient organic light-emitting diodes (OLEDs), thermally activated delayed fluorescence (TADF) has been extensively investigated to find various types of host and dopant molecules that have small singlet-triplet exchange energy. In this study, we suggest the ideal combination of host and dopant systems showing enhanced external quantum efficiency characteristics as well as stabilized color behavior based on an ideal doping concentration concept which has been conventionally applied for the realization of highly efficient phosphorescent OLED. For a TADF mechanism, both Förster and Dexter energy transfer mechanisms are required simultaneously. We investigate the TADF mechanism by realizing red fluorescent OLED devices utilizing 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran, and 2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene as dopants.

Original language	English
Pages (from-to)	47-54
Number of pages	8
Journal	Synthetic Metals
Volume	209
DOIs	https://doi.org/10.1016/j.synthmet.2015.06.022
Publication status	Published - 13 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Keywords

Highly polar charge transfer materials
Ideal doping concentration
Organic light emitting diodes
Thermally activated delayed fluorescence

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10.1016/j.synthmet.2015.06.022

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title = "Ideal combination of the host and dopant materials showing thermally activated delayed fluorescent behavior",

abstract = "As a promising way to realize highly efficient organic light-emitting diodes (OLEDs), thermally activated delayed fluorescence (TADF) has been extensively investigated to find various types of host and dopant molecules that have small singlet-triplet exchange energy. In this study, we suggest the ideal combination of host and dopant systems showing enhanced external quantum efficiency characteristics as well as stabilized color behavior based on an ideal doping concentration concept which has been conventionally applied for the realization of highly efficient phosphorescent OLED. For a TADF mechanism, both F{\"o}rster and Dexter energy transfer mechanisms are required simultaneously. We investigate the TADF mechanism by realizing red fluorescent OLED devices utilizing 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran, and 2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene as dopants.",

keywords = "Highly polar charge transfer materials, Ideal doping concentration, Organic light emitting diodes, Thermally activated delayed fluorescence",

author = "Cho, {Ye Ram} and Cha, {Seung Ji} and Suh, {Min Chul}",

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T1 - Ideal combination of the host and dopant materials showing thermally activated delayed fluorescent behavior

AU - Cho, Ye Ram

AU - Cha, Seung Ji

AU - Suh, Min Chul

PY - 2015/7/13

Y1 - 2015/7/13

N2 - As a promising way to realize highly efficient organic light-emitting diodes (OLEDs), thermally activated delayed fluorescence (TADF) has been extensively investigated to find various types of host and dopant molecules that have small singlet-triplet exchange energy. In this study, we suggest the ideal combination of host and dopant systems showing enhanced external quantum efficiency characteristics as well as stabilized color behavior based on an ideal doping concentration concept which has been conventionally applied for the realization of highly efficient phosphorescent OLED. For a TADF mechanism, both Förster and Dexter energy transfer mechanisms are required simultaneously. We investigate the TADF mechanism by realizing red fluorescent OLED devices utilizing 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran, and 2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene as dopants.

AB - As a promising way to realize highly efficient organic light-emitting diodes (OLEDs), thermally activated delayed fluorescence (TADF) has been extensively investigated to find various types of host and dopant molecules that have small singlet-triplet exchange energy. In this study, we suggest the ideal combination of host and dopant systems showing enhanced external quantum efficiency characteristics as well as stabilized color behavior based on an ideal doping concentration concept which has been conventionally applied for the realization of highly efficient phosphorescent OLED. For a TADF mechanism, both Förster and Dexter energy transfer mechanisms are required simultaneously. We investigate the TADF mechanism by realizing red fluorescent OLED devices utilizing 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran, and 2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene as dopants.

KW - Highly polar charge transfer materials

KW - Ideal doping concentration

KW - Organic light emitting diodes

KW - Thermally activated delayed fluorescence

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DO - 10.1016/j.synthmet.2015.06.022

M3 - Article

AN - SCOPUS:84936976781

SN - 0379-6779

VL - 209

SP - 47

EP - 54

JO - Synthetic Metals

JF - Synthetic Metals

ER -

Ideal combination of the host and dopant materials showing thermally activated delayed fluorescent behavior

Abstract

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Keywords

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