https://scholars.lib.ntu.edu.tw/handle/123456789/626368
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Hu Y.-C | en-US |
dc.contributor.author | Chen L.-M | en-US |
dc.contributor.author | Lin Z.-L | en-US |
dc.contributor.author | Lee J.-W | en-US |
dc.contributor.author | Wei W.-C | en-US |
dc.contributor.author | Ko T.-Y | en-US |
dc.contributor.author | Lo C.-Y | en-US |
dc.contributor.author | Hung W.-Y | en-US |
dc.contributor.author | KEN-TSUNG WONG | en-US |
dc.creator | Hu Y.-C;Chen L.-M;Lin Z.-L;Lee J.-W;Wei W.-C;Ko T.-Y;Lo C.-Y;Hung W.-Y;Wong K.-T. | - |
dc.date.accessioned | 2022-12-14T03:45:21Z | - |
dc.date.available | 2022-12-14T03:45:21Z | - |
dc.date.issued | 2022 | - |
dc.identifier.issn | 00094536 | - |
dc.identifier.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129730524&doi=10.1002%2fjccs.202200094&partnerID=40&md5=54bb97209400eb864779c84921332c4f | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/626368 | - |
dc.description.abstract | In this study, a new triazatruxene-based donor Tr-iBu bearing branched alkyl groups is reported to suppress the aggregation found in a previously reported methyl-substituted counterpart Tr-Me. The effects of a steric factor on the propensity of exciplex formation were examined by respectively mixing these triazatruxene-based donors with PO-T2T and two new acceptors PO-T2P and PO-Pyr, all bearing phosphine oxide as the peripheral groups and N-heteroarene cores with different numbers of nitrogen. Based on the steric hindrance of side groups and their corresponding molecular orbitals alignments of donors and acceptors, the characteristics of exciplex-forming systems were analyzed. Among them, the exciplex-forming blends Tr-iBu:PO-T2P and Tr-iBu:PO-Pyr were selected to serve as the emitting layer (EML) to achieve OLED devices with a moderate maximum external quantum efficiency (EQEmax) of 8.27 and 7.54%, respectively. Adopting the Förster resonance energy transfer strategy, the exciplex cohost was doped with a fluorescence emitter, DPy2CN, to realize a deep-red OLED device with the emission peak centered at 674 nm while retaining EQEmax of 6.28%. Our results highlight the importance of suppressing the donor aggregation, adequate donor: acceptor combination, and a suitable triplet state of composing the materials for giving efficient exciplex-based OLEDs. © 2022 Chemical Society Located in Taipei and Wiley-VCH GmbH. | - |
dc.relation.ispartof | Journal of the Chinese Chemical Society | - |
dc.subject | deep-red fluorescence emitter; diphenylphosphine oxide; exciplex; organic light-emitting diode; thermally-activated delayed fluorescence; triazatruxene | - |
dc.title | Suppressing intermolecular interactions for enhancing the performance of exciplex-based OLEDs | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1002/jccs.202200094 | - |
dc.identifier.scopus | 2-s2.0-85129730524 | - |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Chemistry | - |
crisitem.author.orcid | 0000-0002-1680-6186 | - |
crisitem.author.parentorg | College of Science | - |
顯示於: | 化學系 |
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