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Article: High-Efficiency Solution-Processed Organic Light-Emitting Diodes with Tetradentate Platinum(II) Emitters

TitleHigh-Efficiency Solution-Processed Organic Light-Emitting Diodes with Tetradentate Platinum(II) Emitters
Authors
Keywordsorganic light-emitting diodes
platinum complexes
solution process
bipolar organic host
high efficiency
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick
Citation
ACS Applied Materials & Interfaces, 2019, v. 11 n. 48, p. 45161-45170 How to Cite?
AbstractThe realization of high-efficiency solution-processed organic light-emitting diodes (OLEDs) using phosphorescent tetradentate Pt(II) emitters and bipolar organic hosts is demonstrated in this work. To investigate the effect of organic host on the platinum dopant, the performances of solution-processed Pt-OLEDs with various combinations between four tetradentate Pt(II) emitters, including two newly developed tetra-Pt-S2 and tetra-Pt-S3 and three bipolar organic hosts m-TPAPy, o-TPAPy, and o-CzPy, have been analyzed and compared. Among the tetradentate Pt(II) complexes studied in this work, tetra-Pt-S3 exhibited the best electroluminescent performance attributable to its bulky molecular scaffold structure, high emission quantum yield, and good solubility in common organic solvents. High external quantum efficiencies (EQEs) of up to 22.4% were achieved in the solution-processed OLED with tetra-Pt-S3 emitter and m-TPAPy host at the dopant concentration of 4 wt %. At a high luminance of 1000 cd m–2, the EQE of this device decreased slightly to 21.0%.
Persistent Identifierhttp://hdl.handle.net/10722/282885
ISSN
2019 Impact Factor: 8.758
2015 SCImago Journal Rankings: 2.381

 

DC FieldValueLanguage
dc.contributor.authorCheng, G-
dc.contributor.authorKwak, Y-
dc.contributor.authorTo, WP-
dc.contributor.authorLam, TL-
dc.contributor.authorTong, GSM-
dc.contributor.authorSit, MK-
dc.contributor.authorGong, S-
dc.contributor.authorChoi, B-
dc.contributor.authorChoi, WI-
dc.contributor.authorYang, C-
dc.contributor.authorChe, CM-
dc.date.accessioned2020-06-05T06:22:42Z-
dc.date.available2020-06-05T06:22:42Z-
dc.date.issued2019-
dc.identifier.citationACS Applied Materials & Interfaces, 2019, v. 11 n. 48, p. 45161-45170-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/282885-
dc.description.abstractThe realization of high-efficiency solution-processed organic light-emitting diodes (OLEDs) using phosphorescent tetradentate Pt(II) emitters and bipolar organic hosts is demonstrated in this work. To investigate the effect of organic host on the platinum dopant, the performances of solution-processed Pt-OLEDs with various combinations between four tetradentate Pt(II) emitters, including two newly developed tetra-Pt-S2 and tetra-Pt-S3 and three bipolar organic hosts m-TPAPy, o-TPAPy, and o-CzPy, have been analyzed and compared. Among the tetradentate Pt(II) complexes studied in this work, tetra-Pt-S3 exhibited the best electroluminescent performance attributable to its bulky molecular scaffold structure, high emission quantum yield, and good solubility in common organic solvents. High external quantum efficiencies (EQEs) of up to 22.4% were achieved in the solution-processed OLED with tetra-Pt-S3 emitter and m-TPAPy host at the dopant concentration of 4 wt %. At a high luminance of 1000 cd m–2, the EQE of this device decreased slightly to 21.0%.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick-
dc.relation.ispartofACS Applied Materials & Interfaces-
dc.subjectorganic light-emitting diodes-
dc.subjectplatinum complexes-
dc.subjectsolution process-
dc.subjectbipolar organic host-
dc.subjecthigh efficiency-
dc.titleHigh-Efficiency Solution-Processed Organic Light-Emitting Diodes with Tetradentate Platinum(II) Emitters-
dc.typeArticle-
dc.identifier.emailCheng, G: ggcheng@hku.hk-
dc.identifier.emailTo, WP: kevintwp@hku.hk-
dc.identifier.emailLam, TL: joeltl@hku.hk-
dc.identifier.emailTong, GSM: tongsm@hku.hk-
dc.identifier.emailSit, MK: mankisit@hku.hk-
dc.identifier.emailChe, CM: chemhead@hku.hk-
dc.identifier.authorityCheng, G=rp02145-
dc.identifier.authorityTo, WP=rp02410-
dc.identifier.authorityTong, GSM=rp00790-
dc.identifier.authorityChe, CM=rp00670-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsami.9b11715-
dc.identifier.pmid31718137-
dc.identifier.scopuseid_2-s2.0-85075687862-
dc.identifier.hkuros310311-
dc.identifier.volume11-
dc.identifier.issue48-
dc.identifier.spage45161-
dc.identifier.epage45170-
dc.publisher.placeUnited States-

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