OLEDs – how do they work?

OLEDs consist of several functional layers, including charge transport and emissive layers. Novaled’s unique approach uses doping materials to increase the conductivity of the charge transport layers. OLEDs with these materials exhibit low voltage and stable operation, resulting in durable and power-saving OLED products.

Main parts of an OLED

substrate, anode, cathode and organic layers (transport + emissive layer)


As current flows from the cathode to the anode through the organic layers, holes and electrons move from the corresponding conducting layers into the emissive layer where they recombine. As the electrons drop into the holes, they release extra energy as light, thus generating an organic light source.

OLEDs are

  • OLEDs are solid-state devices composed of multiple thin layers of organic materials with in total just 1/50th the thickness of a human hair.
  • different than LEDs or other point light sources.
    OLEDs emit diffuse light as an area light source
    when electricity is applied.