Novel concept organic semiconductors useful for organic light emitting diodes

Chihaya Adachi

Novel concept organic semiconductors useful for organic light emitting diodes

Applied Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We report a material having a very small energy gap between its singlet and triplet excited states, ΔE_1-3, that realizes efficient up-conversion of triplet excitons into a singlet state, leading to efficient thermally activated delayed fluorescence (TADF). Our molecule, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a]carbazol-11-yl)-1,3,5-triazine (PIC-TRZ), broke the large energy gap restriction, providing a quite small ΔE_1-3 of 0.11 eV while maintaining a high fluorescent radiative decay rate (k_r∼10⁷). The intense TADF provides a novel pathway for high efficiency electroluminescence.

Original language	English
Title of host publication	Society for Information Display - 18th International Display Workshops 2011, IDW'11
Pages	791-794
Number of pages	4
Volume	2
Publication status	Published - 2011
Event	18th International Display Workshops 2011, IDW 2011 - Nagoya, Japan Duration: Dec 7 2011 → Dec 9 2011

Other

Other	18th International Display Workshops 2011, IDW 2011
Country	Japan
City	Nagoya
Period	12/7/11 → 12/9/11

All Science Journal Classification (ASJC) codes

Computer Vision and Pattern Recognition
Human-Computer Interaction
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Radiology Nuclear Medicine and imaging

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@inproceedings{1004a6ede7f243288384549178b69359,

title = "Novel concept organic semiconductors useful for organic light emitting diodes",

abstract = "We report a material having a very small energy gap between its singlet and triplet excited states, ΔE1-3, that realizes efficient up-conversion of triplet excitons into a singlet state, leading to efficient thermally activated delayed fluorescence (TADF). Our molecule, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a]carbazol-11-yl)-1,3,5-triazine (PIC-TRZ), broke the large energy gap restriction, providing a quite small ΔE1-3 of 0.11 eV while maintaining a high fluorescent radiative decay rate (kr∼107). The intense TADF provides a novel pathway for high efficiency electroluminescence.",

author = "Chihaya Adachi",

year = "2011",

language = "English",

isbn = "9781622761906",

volume = "2",

pages = "791--794",

booktitle = "Society for Information Display - 18th International Display Workshops 2011, IDW'11",

note = "18th International Display Workshops 2011, IDW 2011 ; Conference date: 07-12-2011 Through 09-12-2011",

}

TY - GEN

T1 - Novel concept organic semiconductors useful for organic light emitting diodes

AU - Adachi, Chihaya

PY - 2011

Y1 - 2011

N2 - We report a material having a very small energy gap between its singlet and triplet excited states, ΔE1-3, that realizes efficient up-conversion of triplet excitons into a singlet state, leading to efficient thermally activated delayed fluorescence (TADF). Our molecule, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a]carbazol-11-yl)-1,3,5-triazine (PIC-TRZ), broke the large energy gap restriction, providing a quite small ΔE1-3 of 0.11 eV while maintaining a high fluorescent radiative decay rate (kr∼107). The intense TADF provides a novel pathway for high efficiency electroluminescence.

AB - We report a material having a very small energy gap between its singlet and triplet excited states, ΔE1-3, that realizes efficient up-conversion of triplet excitons into a singlet state, leading to efficient thermally activated delayed fluorescence (TADF). Our molecule, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a]carbazol-11-yl)-1,3,5-triazine (PIC-TRZ), broke the large energy gap restriction, providing a quite small ΔE1-3 of 0.11 eV while maintaining a high fluorescent radiative decay rate (kr∼107). The intense TADF provides a novel pathway for high efficiency electroluminescence.

UR - http://www.scopus.com/inward/record.url?scp=84870719084&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84870719084&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84870719084

SN - 9781622761906

VL - 2

SP - 791

EP - 794

BT - Society for Information Display - 18th International Display Workshops 2011, IDW'11

T2 - 18th International Display Workshops 2011, IDW 2011

Y2 - 7 December 2011 through 9 December 2011

ER -