A 9-fluorenyl substitution strategy for aromatic-imide-based TADF emitters towards efficient and stable sky blue OLEDs with nearly 30% external quantum efficiency
نویسندگان
چکیده
Aromatic-imide-based TADF emitters were developed by using a 9-fluorenyl substitution strategy and demonstrated stable sky blue electroluminescence with nearly 30% EQE.
منابع مشابه
An Alternative Host Material for Long‐Lifespan Blue Organic Light‐Emitting Diodes Using Thermally Activated Delayed Fluorescence
It has been challenging to find stable blue organic light emitting diodes (OLEDs) that rely on thermally activated delayed fluorescence (TADF). Lack of stable host materials well-fitted to the TADF emitters is one of the critical reasons. The most popular host for blue TADF, bis[2-(diphenylphosphino)phenyl] ether oxide (DPEPO), leads to unrealistically high maximum external quantum efficiency. ...
متن کاملRecent advances on organic blue thermally activated delayed fluorescence (TADF) emitters for organic light-emitting diodes (OLEDs)
The design of highly emissive and stable blue emitters for organic light emitting diodes (OLEDs) is still a challenge, justifying the intense research activity of the scientific community in this field. Recently, a great deal of interest has been devoted to the elaboration of emitters exhibiting a thermally activated delayed fluorescence (TADF). By a specific molecular design consisting into a ...
متن کاملHighly-efficient solution-processed OLEDs based on new bipolar emitters.
A series of new bipolar solution-processable RGB materials are designed by considering the solubility, morphology, fluorescence efficiency and carriers balance. Solution-processable OLEDs are fabricated with high efficiencies, especially, the green TCBzC-based device shows the maximum luminous efficiency of 31.6 cd A(-1), which is among the best reported values.
متن کاملCORRIGENDUM: Promising operational stability of high-efficiency organic light-emitting diodes based on thermally activated delayed fluorescence
Organic light-emitting diodes (OLEDs) are attractive for next-generation displays and lighting applications because of their potential for high electroluminescence (EL) efficiency, flexibility and low-cost manufacture. Although phosphorescent emitters containing rare metals such as iridium or platinum produce devices with high EL efficiency, these metals are expensive and their blue emission re...
متن کاملMulifunctional Dendritic Emitter: Aggregation-Induced Emission Enhanced, Thermally Activated Delayed Fluorescent Material for Solution-Processed Multilayered Organic Light-Emitting Diodes
Thermally activated delayed fluorescence (TADF) materials emerged as promising light sources in third generation organic light-emitting diodes (OLED). Much effort has been invested for the development of small molecular TADF materials and vacuum process-based efficient TADF-OLEDs. In contrast, a limited number of solution processable high-molecular weight TADF materials toward low cost, large a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materials advances
سال: 2021
ISSN: ['2633-5409']
DOI: https://doi.org/10.1039/d1ma00181g