Abstract
A material possessing a very small energy gap between its singlet and triplet excited states, Δ E1-3, which allows efficient up-conversion of triplet excitons into a singlet state and leads to efficient thermally activated delayed fluorescence (TADF), is reported. The compound, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a] carbazole-11-yl)-1,3,5-triazine, breaks the restriction of a large energy gap, with a Δ E1-3of just 0.11 eV, while maintaining a high fluorescent radiative decay rate (k r ∼ 107). The intense TADF provides a pathway for highly efficient electroluminescence.
| Original language | English |
|---|---|
| Article number | 083302 |
| Journal | Applied Physics Letters |
| Volume | 98 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Feb 21 2011 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
Efficient up-conversion of triplet excitons into a singlet state and its application for organic light emitting diodes. / Endo, Ayataka; Sato, Keigo; Yoshimura, Kazuaki; Kai, Takahiro; Kawada, Atsushi; Miyazaki, Hiroshi; Adachi, Chihaya.
In: Applied Physics Letters, Vol. 98, No. 8, 083302, 21.02.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Efficient up-conversion of triplet excitons into a singlet state and its application for organic light emitting diodes
AU - Endo, Ayataka
AU - Sato, Keigo
AU - Yoshimura, Kazuaki
AU - Kai, Takahiro
AU - Kawada, Atsushi
AU - Miyazaki, Hiroshi
AU - Adachi, Chihaya
PY - 2011/2/21
Y1 - 2011/2/21
N2 - A material possessing a very small energy gap between its singlet and triplet excited states, Δ E1-3, which allows efficient up-conversion of triplet excitons into a singlet state and leads to efficient thermally activated delayed fluorescence (TADF), is reported. The compound, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a] carbazole-11-yl)-1,3,5-triazine, breaks the restriction of a large energy gap, with a Δ E1-3of just 0.11 eV, while maintaining a high fluorescent radiative decay rate (k r ∼ 107). The intense TADF provides a pathway for highly efficient electroluminescence.
AB - A material possessing a very small energy gap between its singlet and triplet excited states, Δ E1-3, which allows efficient up-conversion of triplet excitons into a singlet state and leads to efficient thermally activated delayed fluorescence (TADF), is reported. The compound, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a] carbazole-11-yl)-1,3,5-triazine, breaks the restriction of a large energy gap, with a Δ E1-3of just 0.11 eV, while maintaining a high fluorescent radiative decay rate (k r ∼ 107). The intense TADF provides a pathway for highly efficient electroluminescence.
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U2 - 10.1063/1.3558906
DO - 10.1063/1.3558906
M3 - Article
AN - SCOPUS:79952079869
VL - 98
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 8
M1 - 083302
ER -