What are organic EL materials?

Mechanism of light emission

When an electric current is applied to a specific organic compound, the molecules of the organic compound between the positive and negative electrodes are excited* by the electric energy. The energy generated when the excited state returns to the original state causes the molecules to emit light.
Organic EL uses this luminescence phenomenon (electroluminescence).

Making molecules or the like transfer to a higher energy state by supplying energy from the outside.

Electron transport layer: a layer that transports electrons to the luminescent layer
Luminescent layer: a layer in which holes and elections recombine to emit light
Hole transport layer: a layer that transports holes to the luminescent layer
Hole injection layer: layer for injecting holes from an anode

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