First, Light Emitting Diodes (LED); Then Light Emitting Plasma (LEP); Now Light Emitting Cells (LEC)

Polymer LEC panels are similar to P-OLEDs in structure, but in LECs the emitter polymer is blended with an electrolyte (e.g. LiCF₃SO₃ dissolved in PEO). LECs, which require only three layers, were first reported 17 years ago, but they suffered from very low lifetime and efficiency. Even with recent advances (mostly better electrodes) LECs are still not on par with OLEDs regarding performance (lifetime and efficiency) – but they are much easier to produce.  Read more.