High-efficiency diphenylsulfon derivative-based organic light-emitting diode exhibiting thermally-activated delayed fluorescence

  title={High-efficiency diphenylsulfon derivative-based organic light-emitting diode exhibiting thermally-activated delayed fluorescence},
  author={Geon Hyeong Lee and Young Sik Kim},
  journal={Journal of the Korean Physical Society},
A novel thermally-activated delayed fluorescence (TADF) material with diphenyl sulfone (DPS) as an electron acceptor and 3,6-dimethoxycarbazole (DMOC) and 1,3,6,8-Tetramethyl-9H-carbazole (TMC) as electron donors was investigated theoretically for a blue organic light emitting diode (OLED) emitter. We calculated the energies of the first singlet (S1) and the first triplet (T1) excited states of the TADF materials by using the dependence on the charge transfer amounts for the optimal Hartree… 
3 Citations

Figures and Tables from this paper

Theoretical study of dianchoring dual D-π-A structure of sensitizers for efficient dye-sensitized solar cells

ABSTRACT In this study, triphenylamine-based dye sensitizers possessing dual D-π-A units with triphenylamine as an electron donor and thiophen-isocyanoacrylic acid as an electron acceptor (dye1 and

Contribution of TADF and exciplex emission for efficient “warm-white” OLEDs

The bicarbazole derivative 4,4'-(9H, 9'H-[3,3'-bicarbazole]-9,9'-diyl) bis(3-(trifluoromethyl) benzonitrile), denoted as pCNBCzoCF(3), was synthesized and tested for white OLED applications. pCNBCz

Emitter Orientation as a Key Parameter in Organic Light-Emitting Diodes

Neatness counts, even in optoelectronics. Controlling the orientation of dye molecules in an organic light-emitting diode (OLEDs) is a powerful tool to improve its light outcoupling. By aligning



High-efficiency deep-blue organic light-emitting diodes based on a thermally activated delayed fluorescence emitter

Highly efficient deep-blue thermally activated delayed fluorescence (TADF) is observed from a charge-transfer compound bis[4-(3,6-dimethoxycarbazole)phenyl]sulfone (DMOC-DPS). In comparison with the


We describe the performance of an organic light-emitting device employing the green electrophosphorescent material, fac tris(2-phenylpyridine) iridium [Ir(ppy)3] doped into a

Strong ligand field effects of blue phosphorescent Ir(III) complexes with phenylpyrazole and phosphines.

To achieve deep blue emission and increase the emission efficiency, the phenyl group is substituted on the 3-position of the pyrazole ring that lowers the triplet energy enough that the quenching channel is not thermally accessible and the ancillary ligands coordinated to iridium atom to phosphine and cyano groups known as very strong field ligands are changed.

Highly efficient phosphorescent emission from organic electroluminescent devices

The efficiency of electroluminescent organic light-emitting devices, can be improved by the introduction of a fluorescent dye. Energy transfer from the host to the dye occurs via excitons, but only

Efficient up-conversion of triplet excitons into a singlet state and its application for organic light emitting diodes

A material possessing a very small energy gap between its singlet and triplet excited states, ΔE1−3, which allows efficient up-conversion of triplet excitons into a singlet state and leads to

Nearly 100% internal phosphorescence efficiency in an organic light emitting device

We demonstrate very high efficiency electrophosphorescence in organic light-emitting devices employing a phosphorescent molecule doped into a wide energy gap host. Using

High Efficiency Nondoped Deep-Blue Organic Light Emitting Devices Based on Imidazole-π-triphenylamine Derivatives

High-performance deep-blue emitting phenanthroimidazole derivatives with a structure of donor–linker–acceptor were designed and synthesized. By using different linkers and different linking

Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes

We have demonstrated that the exemplary red fluorescent organic light-emitting diodes (OLEDs) gain as much as half of their electroluminescence from annihilation of triplet states generated by