Minghan Cai
Tsinghua University
27 Papers
50 Citations
Minghan Cai is an academic researcher from Tsinghua University. The author has contributed to research in topics: Quantum efficiency & OLED. The author has an hindex of 16, co-authored 27 publications.
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Papers
Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability
TL;DR: In this paper, the authors designed molecular structures using tert-butyl units to promote the photoluminescence efficiency and improve the stability of blue TADF emitters, achieving a maximum external quantum efficiency as high as 21.2% and a record long T50 (time to 50% of initial luminance) of 770 h at an initial brightness of 500 cd m−2.
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Stable Enantiomers Displaying Thermally Activated Delayed Fluorescence: Efficient OLEDs with Circularly Polarized Electroluminescence.
TL;DR: Aromatic-imide-based thermally activated delayed fluorescent (TADF) enantiomers were efficiently synthesized by introducing a chiral 1,2-diaminocyclohexane to the achiral TADF unit as mentioned in this paper.
390
Efficient and Stable Deep-Blue Fluorescent Organic Light-Emitting Diodes Employing a Sensitizer with Fast Triplet Upconversion.
Dongdong Zhang,Song Xiaozeng,Alexander J. Gillett,Bluebell H. Drummond,Saul T. E. Jones,Guomeng Li,Hanqing He,Minghan Cai,Dan Credgington,Lian Duan +9 more
TL;DR: A weak acceptor of cyanophenyl is adopted to replace the stronger cyano one to construct blue emitters with multiple donors and acceptors to facilitate delocalized excited states for enhanced mixing between charge-transfer and locally excited states.
309
Versatile Indolocarbazole-Isomer Derivatives as Highly Emissive Emitters and Ideal Hosts for Thermally Activated Delayed Fluorescent OLEDs with Alleviated Efficiency Roll-Off.
TL;DR: It is evident that TadF hosts with high ηPL values, fast reverse intersystem crossing processes, and balanced charge transport properties may open the path toward roll-off-free TADF-OLEDs.
255
Blocking Energy-Loss Pathways for Ideal Fluorescent Organic Light-Emitting Diodes with Thermally Activated Delayed Fluorescent Sensitizers.
TL;DR: TSF-OLEDs with breakthrough efficiencies even at high brightnesses are demonstrated by suppressing the competitive deactivation processes, including direct charge recombination on conventional fluorescent dopants and Dexter energy transfer from the host to the CFDs.
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