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<P>In this communication, we report an excellent new highly conjugated and rigid electron donor (diindolocarbazole) for thermally activated delayed fluorescence (TADF) emitters. The donor-acceptor structure with diindolocarbazole donor induces h...
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A new rigid diindolocarbazole donor moiety for high quantum efficiency thermally activated delayed fluorescence emitter
한글로보기https://www.riss.kr/link?id=A107446767
- 저자
- 발행기관
- 학술지명
- 권호사항
-
발행연도
2018
-
작성언어
-
-
등재정보
SCIE
-
자료형태
학술저널
-
수록면
1343-1348(6쪽)
- 제공처
- 소장기관
-
0
상세조회 -
0
다운로드
부가정보
다국어 초록 (Multilingual Abstract)
<P>In this communication, we report an excellent new highly conjugated and rigid electron donor (diindolocarbazole) for thermally activated delayed fluorescence (TADF) emitters. The donor-acceptor structure with diindolocarbazole donor induces high oscillator strength as well as high probability for the radiative transition, suitable frontier molecular overlap with proper intramolecular charge transfer and a large dihedral angle with out-of-plane structure between electron donor and acceptor; this results in high photoluminescence quantum yield, small singlet-triplet energy splitting, and extremely short delayed fluorescence exciton lifetime. The fabricated organic light emitting diode with new donor applied green emitter exhibits a remarkably high external quantum efficiency of 31.4% without any out-coupling technique. It also shows extremely low efficiency roll-off characteristics with the highest luminance of 71 160 cd m<SUP>−2</SUP> as well as good operational device stability.</P>
<P>In this communication, we report an excellent new highly conjugated and rigid electron donor (diindolocarbazole) for thermally activated delayed fluorescence (TADF) emitters. The donor-acceptor structure with diindolocarbazole donor induces high oscillator strength as well as high probability for the radiative transition, suitable frontier molecular overlap with proper intramolecular charge transfer and a large dihedral angle with out-of-plane structure between electron donor and acceptor; this results in high photoluminescence quantum yield, small singlet-triplet energy splitting, and extremely short delayed fluorescence exciton lifetime. The fabricated organic light emitting diode with new donor applied green emitter exhibits a remarkably high external quantum efficiency of 31.4% without any out-coupling technique. It also shows extremely low efficiency roll-off characteristics with the highest luminance of 71 160 cd m<SUP>−2</SUP> as well as good operational device stability.</P>
동일학술지(권/호) 다른 논문
-
- The Royal Society of Chemistry
- Park, Hyunik
- 2018
- SCIE
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