I am not negating the OLED technology but...
"Today, the majority of energy produced is used for lighting buildings." - the author seems to be a little biased in his world perception. ;-)
Also the actual OLED efficiency (lumens per watt) is far from the most efficient (commercial) light sources.
OLED provides homogenous lighting without use of any other diffusers.This is great advantage.Also a panel of OLED will look like a window glass allowing sun light during day time. Also this can be made into any shape. Soon all the lighting will be replaced by OLED when it reaches 100 lumen /watt at a cost of $2/watt.
I don't know if this was a translation problem but organic in chemistry means carbon based not carbonate which is both oxygen and carbon. This article would have been more interesting if it didn't seem like a soft sell for OLEDs and had compared OLEDs against LEDs
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