2021
DOI: 10.1002/adom.202101343
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Host‐Dopant Interaction between Organic Thermally Activated Delayed Fluorescence Emitter and Host Material: Insight into the Excited State

Abstract: rapidly, and the products based on OLEDs including smartphones, televisions, monitors, etc. are being commercialized.The utilization mechanism of the excitons determines the quantum efficiency of the devices. [13][14][15] OLEDs based on the conventional fluorescent materials can only harvest the singlet excitons for light emission, which results in an upper limit of only 25% for internal quantum efficiency (IQE). The phosphorescent OLEDs incorporating transition metals into the molecular framework of organic e… Show more

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Cited by 22 publications
(12 citation statements)
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“…These results illustrate that the intermolecular interactions with the matrix are key parameters to obtain TADF with this λ 5 -phosphinine. This phenomenon has already been observed with several other fluorophores but remains poorly understood in terms of structure property relationships . However, these results remain promising as the OLED is very stable and presents a brightness that increases until very high current densities (300 mA·cm –2 ).…”
supporting
confidence: 51%
“…These results illustrate that the intermolecular interactions with the matrix are key parameters to obtain TADF with this λ 5 -phosphinine. This phenomenon has already been observed with several other fluorophores but remains poorly understood in terms of structure property relationships . However, these results remain promising as the OLED is very stable and presents a brightness that increases until very high current densities (300 mA·cm –2 ).…”
supporting
confidence: 51%
“…[124][125][126][127] Designing proper host materials for specific emitters is also an essential research topic for the development of high-performance OLEDs. [128][129][130] Some representative hosts used in PHOLEDs, such as 1,3-bis(N-carbazolyl)benzene (mCP), bis(9-carbazolyl)biphenyl (CBP), and bis [2-(diphenylphosphino)phenyl]ether oxide (DPEPO), have also been used in most studies of TADFOLEDs. [129][130][131][132][133][134][135]…”
Section: Multilayer Architecturementioning
confidence: 99%
“…In 1961, Parker and Hatchard discovered that eosin has the TADF property with long fluorescence lifetime. 9 Compared with traditional rare earth and transition metal complexes, eosin not only has long fluorescence lifetime but also has better biocompatibility. Thus, this excellent property has greatly attracted the scientific researchers' attention.…”
Section: Introductionmentioning
confidence: 99%