Efficient deep blue fluorescent emitter showing high external quantum efficiency

Seung Ji Cha; Noh Soo Han; Jae Kyu Song; So Ra Park; Young Min Jeon; Min Chul Suh

doi:10.1016/j.dyepig.2015.04.020

Efficient deep blue fluorescent emitter showing high external quantum efficiency

Seung Ji Cha, Noh Soo Han, Jae Kyu Song, So Ra Park, Young Min Jeon, Min Chul Suh

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

54 Citations (Scopus)

Abstract

A benzoanthracene-cored deep blue-emitting compound, N⁶,N⁹-bis(4-cyano-phenyl)-N³,N⁹-diphenylspiro[benzo[de]anthracene-7,9′-fluorene]-3,9-diamine was synthesized and which has an exchange energy of ∼0.2 eV between the singlet and triplet state. OLED devices doped with this new deep blue emitter showed comparable device performances and delayed fluorescence via the reoccupation of the singlet excitons from the triplet excitons with long lifetimes. In particular, the 10%-doped device exhibited the maximum external quantum efficiency of 14.8% and current efficiency of 15.1 cd/A with Commission International de L'Edairge coordinates of (0.14, 0.11).

Original language	English
Pages (from-to)	200-207
Number of pages	8
Journal	Dyes and Pigments
Volume	120
DOIs	https://doi.org/10.1016/j.dyepig.2015.04.020
Publication status	Published - 1 Sept 2015

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Publisher Copyright:
© 2015 Elsevier Ltd.

Keywords

Charge confinement
Deep blue emitter
Delayed fluorescence
Organic light emitting diodes
Spiro[de]benzoanthracene moiety
Triplet-triplet annihilation

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10.1016/j.dyepig.2015.04.020

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title = "Efficient deep blue fluorescent emitter showing high external quantum efficiency",

abstract = "A benzoanthracene-cored deep blue-emitting compound, N6,N9-bis(4-cyano-phenyl)-N3,N9-diphenylspiro[benzo[de]anthracene-7,9′-fluorene]-3,9-diamine was synthesized and which has an exchange energy of ∼0.2 eV between the singlet and triplet state. OLED devices doped with this new deep blue emitter showed comparable device performances and delayed fluorescence via the reoccupation of the singlet excitons from the triplet excitons with long lifetimes. In particular, the 10%-doped device exhibited the maximum external quantum efficiency of 14.8% and current efficiency of 15.1 cd/A with Commission International de L'Edairge coordinates of (0.14, 0.11).",

keywords = "Charge confinement, Deep blue emitter, Delayed fluorescence, Organic light emitting diodes, Spiro[de]benzoanthracene moiety, Triplet-triplet annihilation",

author = "Cha, {Seung Ji} and Han, {Noh Soo} and Song, {Jae Kyu} and Park, {So Ra} and Jeon, {Young Min} and Suh, {Min Chul}",

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year = "2015",

month = sep,

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doi = "10.1016/j.dyepig.2015.04.020",

language = "English",

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journal = "Dyes and Pigments",

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T1 - Efficient deep blue fluorescent emitter showing high external quantum efficiency

AU - Cha, Seung Ji

AU - Han, Noh Soo

AU - Song, Jae Kyu

AU - Park, So Ra

AU - Jeon, Young Min

AU - Suh, Min Chul

PY - 2015/9/1

Y1 - 2015/9/1

N2 - A benzoanthracene-cored deep blue-emitting compound, N6,N9-bis(4-cyano-phenyl)-N3,N9-diphenylspiro[benzo[de]anthracene-7,9′-fluorene]-3,9-diamine was synthesized and which has an exchange energy of ∼0.2 eV between the singlet and triplet state. OLED devices doped with this new deep blue emitter showed comparable device performances and delayed fluorescence via the reoccupation of the singlet excitons from the triplet excitons with long lifetimes. In particular, the 10%-doped device exhibited the maximum external quantum efficiency of 14.8% and current efficiency of 15.1 cd/A with Commission International de L'Edairge coordinates of (0.14, 0.11).

AB - A benzoanthracene-cored deep blue-emitting compound, N6,N9-bis(4-cyano-phenyl)-N3,N9-diphenylspiro[benzo[de]anthracene-7,9′-fluorene]-3,9-diamine was synthesized and which has an exchange energy of ∼0.2 eV between the singlet and triplet state. OLED devices doped with this new deep blue emitter showed comparable device performances and delayed fluorescence via the reoccupation of the singlet excitons from the triplet excitons with long lifetimes. In particular, the 10%-doped device exhibited the maximum external quantum efficiency of 14.8% and current efficiency of 15.1 cd/A with Commission International de L'Edairge coordinates of (0.14, 0.11).

KW - Charge confinement

KW - Deep blue emitter

KW - Delayed fluorescence

KW - Organic light emitting diodes

KW - Spiro[de]benzoanthracene moiety

KW - Triplet-triplet annihilation

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U2 - 10.1016/j.dyepig.2015.04.020

DO - 10.1016/j.dyepig.2015.04.020

M3 - Article

AN - SCOPUS:84929466148

SN - 0143-7208

VL - 120

SP - 200

EP - 207

JO - Dyes and Pigments

JF - Dyes and Pigments

ER -

Efficient deep blue fluorescent emitter showing high external quantum efficiency

Abstract

Bibliographical note

Keywords

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