Last month BASF and Philips announced that they have co-developed the transparent OLEDs and OPVs used in Daimler's Smart Forvision concept EV. Today BASF released a nice short video introducing that technology:

In the video BASF's Dr. Felix Gorth says that they are currently focused on developing a more efficient blue emitter.

Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters