How do OLED TVs work?

How do Sony's and LG's OLED TVs work? In the video above, MIT professor Vladimir Bulovic explains using a glowing pickle...

Essentially, electrons pass through active organic matter (i.e. the pickle) and charge the substance. When positive and negative charges collide, they release light (a photon). The pickle represents just one of the millions of OLEDs in a potential TV display.

Bonus question: Who has a better accent, The Most Interesting Man in the World or Vladimir Bulovic?

[Link: Gizmodo]