Highly Efficient Orange and Red Phosphorescent Organic Light‐Emitting Diodes with Low Roll‐Off of Efficiency using a Novel Thermally Activated Delayed Fluorescence Material as Host. (28th May 2015)

• Record Type: Journal Article
• Authors: Wang, Hui; Meng, Lingqiang; Shen, Xingxing; Wei, Xiaofang; Zheng, Xiuli; Lv, Xiaopeng; Yi, Yuanping; Wang, Ying; Wang, Pengfei
• Is Part Of: Advanced materials. Volume 27:Number 27(2015)
• Page Start: 4041
• Page End: 4047
• Publication Date: 2015-05-28
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201501373
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201501373-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>MTXSFCz with thermally activated delayed fluorescence</bold> is synthesized. Orange and red phosphorescent organic light‐emitting diodes (PHOLEDs) with low efficiency roll‐off exhibit external quantum efficiencies (EQE) up to 11.8% and 15.6%. The efficient upconversion from triplet to singlet of the host reduces the triplet density and thus affords a low efficiency roll‐off of PHOLEDs. <graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgj1smmh2hr" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> </abstract>