Spray on solar cells produce in fluro only light or sun

Spray-On Solar Window Unveiled | Renewable Energy News Article

Saw this reported by a share advisor. He was raving , this was the only story I could find when I went looking to post here

This sounds like a scam, to me. If it isn't a scam, it is yet another example of "breakthrough solar technology" being advertised that in 5, 10, 15, 20 years or longer, you never hear anything about again. How long has it been since "screen printed solar cells" were the next greatest thing in solar energy production? 10 years?