Enhanced electroluminescence based on thermally activated delayed fluorescence from a carbazole-triazine derivative.
Identifieur interne : 000593 ( Main/Exploration ); précédent : 000592; suivant : 000594Enhanced electroluminescence based on thermally activated delayed fluorescence from a carbazole-triazine derivative.
Auteurs : Tomas Serevi Ius [Japon] ; Tetsuya Nakagawa ; Ming-Cheng Kuo ; Shuo-Hsien Cheng ; Ken-Tsung Wong ; Chih-Hao Chang ; Raymond C. Kwong ; Sean Xia ; Chihaya AdachiSource :
- Physical chemistry chemical physics : PCCP ; 2013.
Abstract
Thermally activated delayed fluorescence (TADF) properties of a dicarbazole-triazine compound, 9-(4,6-diphenyl-1,3,5-triazin-2-yl)-9'-phenyl-3,3'-bicarbazole (CzT), and its OLED characteristics were investigated. An estimated small energy gap of about 90 meV between the singlet and triplet energy states of CzT made the up-conversion of triplet excitons back to a singlet state possible. The origin of the observed delayed fluorescence has been shown to be thermally activated delayed fluorescence. An organic light emitting diode (OLED) with CzT as an emitter showed the maximum external quantum efficiency (EQE) of 6%. For comparison, another carbazole-triazine derivative of 3-(2'-(4,6-diphenyl-1,3,5-triazin-2-yl)-[1,1'-biphenyl]-2-yl)-9-phenyl-9H-carbazole (PhCzTAZ) with a similar structure was also studied. PhCzTAZ showed a low fluorescence quantum yield with no TADF.
DOI: 10.1039/c3cp52255e
PubMed: 23907636
Affiliations:
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Kwong</name></author><author><name sortKey="Xia, Sean" sort="Xia, Sean" uniqKey="Xia S" first="Sean" last="Xia">Sean Xia</name></author><author><name sortKey="Adachi, Chihaya" sort="Adachi, Chihaya" uniqKey="Adachi C" first="Chihaya" last="Adachi">Chihaya Adachi</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2013">2013</date><idno type="doi">10.1039/c3cp52255e</idno><idno type="RBID">pubmed:23907636</idno><idno type="pmid">23907636</idno><idno type="wicri:Area/PubMed/Corpus">000213</idno><idno type="wicri:Area/PubMed/Curation">000213</idno><idno type="wicri:Area/PubMed/Checkpoint">000227</idno><idno type="wicri:Area/Ncbi/Merge">000B09</idno><idno type="wicri:Area/Ncbi/Curation">000B09</idno><idno type="wicri:Area/Ncbi/Checkpoint">000B09</idno><idno type="wicri:Area/Main/Merge">000586</idno><idno type="wicri:Area/Main/Curation">000593</idno><idno type="wicri:Area/Main/Exploration">000593</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Enhanced electroluminescence based on thermally activated delayed fluorescence from a carbazole-triazine derivative.</title><author><name sortKey="Serevi Ius, Tomas" sort="Serevi Ius, Tomas" uniqKey="Serevi Ius T" first="Tomas" last="Serevi Ius">Tomas Serevi Ius</name><affiliation wicri:level="1"><nlm:affiliation>Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan. adachi@cstf.kyushu-u.ac.jp.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395</wicri:regionArea><wicri:noRegion>Fukuoka 819-0395</wicri:noRegion></affiliation></author><author><name sortKey="Nakagawa, Tetsuya" sort="Nakagawa, Tetsuya" uniqKey="Nakagawa T" first="Tetsuya" last="Nakagawa">Tetsuya Nakagawa</name></author><author><name sortKey="Kuo, Ming Cheng" sort="Kuo, Ming Cheng" uniqKey="Kuo M" first="Ming-Cheng" last="Kuo">Ming-Cheng Kuo</name></author><author><name sortKey="Cheng, Shuo Hsien" sort="Cheng, Shuo Hsien" uniqKey="Cheng S" first="Shuo-Hsien" last="Cheng">Shuo-Hsien Cheng</name></author><author><name sortKey="Wong, Ken Tsung" sort="Wong, Ken Tsung" uniqKey="Wong K" first="Ken-Tsung" last="Wong">Ken-Tsung Wong</name></author><author><name sortKey="Chang, Chih Hao" sort="Chang, Chih Hao" uniqKey="Chang C" first="Chih-Hao" last="Chang">Chih-Hao Chang</name></author><author><name sortKey="Kwong, Raymond C" sort="Kwong, Raymond C" uniqKey="Kwong R" first="Raymond C" last="Kwong">Raymond C. Kwong</name></author><author><name sortKey="Xia, Sean" sort="Xia, Sean" uniqKey="Xia S" first="Sean" last="Xia">Sean Xia</name></author><author><name sortKey="Adachi, Chihaya" sort="Adachi, Chihaya" uniqKey="Adachi C" first="Chihaya" last="Adachi">Chihaya Adachi</name></author></analytic><series><title level="j">Physical chemistry chemical physics : PCCP</title><idno type="e-ISSN">1463-9084</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Thermally activated delayed fluorescence (TADF) properties of a dicarbazole-triazine compound, 9-(4,6-diphenyl-1,3,5-triazin-2-yl)-9'-phenyl-3,3'-bicarbazole (CzT), and its OLED characteristics were investigated. An estimated small energy gap of about 90 meV between the singlet and triplet energy states of CzT made the up-conversion of triplet excitons back to a singlet state possible. The origin of the observed delayed fluorescence has been shown to be thermally activated delayed fluorescence. An organic light emitting diode (OLED) with CzT as an emitter showed the maximum external quantum efficiency (EQE) of 6%. For comparison, another carbazole-triazine derivative of 3-(2'-(4,6-diphenyl-1,3,5-triazin-2-yl)-[1,1'-biphenyl]-2-yl)-9-phenyl-9H-carbazole (PhCzTAZ) with a similar structure was also studied. PhCzTAZ showed a low fluorescence quantum yield with no TADF.</div></front></TEI><affiliations><list><country><li>Japon</li></country></list><tree><noCountry><name sortKey="Adachi, Chihaya" sort="Adachi, Chihaya" uniqKey="Adachi C" first="Chihaya" last="Adachi">Chihaya Adachi</name><name sortKey="Chang, Chih Hao" sort="Chang, Chih Hao" uniqKey="Chang C" first="Chih-Hao" last="Chang">Chih-Hao Chang</name><name sortKey="Cheng, Shuo Hsien" sort="Cheng, Shuo Hsien" uniqKey="Cheng S" first="Shuo-Hsien" last="Cheng">Shuo-Hsien Cheng</name><name sortKey="Kuo, Ming Cheng" sort="Kuo, Ming Cheng" uniqKey="Kuo M" first="Ming-Cheng" last="Kuo">Ming-Cheng Kuo</name><name sortKey="Kwong, Raymond C" sort="Kwong, Raymond C" uniqKey="Kwong R" first="Raymond C" last="Kwong">Raymond C. Kwong</name><name sortKey="Nakagawa, Tetsuya" sort="Nakagawa, Tetsuya" uniqKey="Nakagawa T" first="Tetsuya" last="Nakagawa">Tetsuya Nakagawa</name><name sortKey="Wong, Ken Tsung" sort="Wong, Ken Tsung" uniqKey="Wong K" first="Ken-Tsung" last="Wong">Ken-Tsung Wong</name><name sortKey="Xia, Sean" sort="Xia, Sean" uniqKey="Xia S" first="Sean" last="Xia">Sean Xia</name></noCountry><country name="Japon"><noRegion><name sortKey="Serevi Ius, Tomas" sort="Serevi Ius, Tomas" uniqKey="Serevi Ius T" first="Tomas" last="Serevi Ius">Tomas Serevi Ius</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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