Yes, the OLED lighting team at GE did print out a glowing, ultra-efficient Christmas tree...and yes, they did put a clip of it on YouTube.
GE's OLED project is generally thought to be ahead of the curve on manufacturing. They can already print OLEDs inexpensively from roll to roll. However, it's harder for them to produce pure white light with the manufacturing process. They've refined that a lot in the last few months, but a Christmas tree was just the perfect idea for what to do with their old, green OLEDs.
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