Efficiency is crucial for organic light emitting diodes (OLEDs) to be energy-saving and to
have a long lifetime for display and solid state lighting applications. Numerous approaches …

In an organic electroluminescent (EL) device, the recombination of injected holes and
electrons produces what appears to be an ion‐pair or charge‐transfer (CT) exciton, and this …

Theoretical understanding of organic light-emitting diodes started from the quest to the
nature of the primary excitation in organic molecular and polymeric materials. We found the …

Recently, Adachi's group reported a series of experimental works on achieving significantly
enhanced electroluminescence (EL) quantum yield via a thermally activated delay …

A potential major drawback with organic light‐emitting devices,(OLEDs) is the limit of 25%
singlet exciton production through spin‐dependent charge recombination. Recent device …

Exciton (or spin) statistics is a physical principle based on the statistics of spin multiplicity. In
electroluminescence, injected electrons and holes have randomized spin states, and usually …

By employing a diabatic model and a first-principle direct method, we have investigated the
carrier transport properties of the highly efficient organic light-emitting materials 1, 1, 2, 3, 4 …

Organic light-emitting diodes (OLEDs) have great potential for applications such as flat
panel displays and solid-state lighting.[1–6] Many green-and red-light-emitting organic …

Based on the results of first‐principles calculations of the electronic properties of blue light‐
emitting materials, the molecular structures of oligofluorenes are optimized by incorporating …

The efficiency of fluorescent organic light emitting diodes (FOLEDs) is strongly affected by
the fraction of singlet excitons formed. However, the standard statistical value of the single to …