A Non-Doped Phosphorescent Organic Light-Emitting Device with Above 31% External Quantum Efficiency

The demonstrated square‐planar Pt(II)‐complex has reduced triplet‐triplet quenching and therefore a near unity quantum yield in the neat thin film. A non‐doped phosphorescent organic light‐emitting diode (PhOLED) based on this emitter achieves (31.1 ± 0.1)% external quantum efficiency without any ou...

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Bibliographic Details
Published inAdvanced materials (Weinheim) Vol. 26; no. 48; pp. 8107 - 8113
Main Authors Wang, Qi, Oswald, Iain W. H., Yang, Xiaolong, Zhou, Guijiang, Jia, Huiping, Qiao, Qiquan, Chen, Yonghua, Hoshikawa-Halbert, Jason, Gnade, Bruce E.
Format Journal Article
LanguageEnglish
Published Germany Blackwell Publishing Ltd 23.12.2014
Subjects
Devices
Emittance
light-emitting diodes
metal complexation
non-doped devices
organic
Organic light emitting diodes
organic; non‐doped devices; metal complexation
phosphorescence
phosphorescence; light‐emitting diodes
Quantum efficiency
Quenching
Thin films
Unity
phosphorescence; light-emitting diodes
organic; non-doped devices; metal complexation
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Summary:The demonstrated square‐planar Pt(II)‐complex has reduced triplet‐triplet quenching and therefore a near unity quantum yield in the neat thin film. A non‐doped phosphorescent organic light‐emitting diode (PhOLED) based on this emitter achieves (31.1 ± 0.1)% external quantum efficiency without any out‐coupling, which shows that a non‐doped PhOLED can be comparable in efficiency to the best doped devices with very complicated device structures.
Bibliography:ark:/67375/WNG-LRH9S7NG-T
ArticleID:ADMA201402947
istex:1659524D8D0A008F3B90014CF407CCE275F1D487
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201402947