Reflective films and coatings for solar shortwave and longwave thermal management

[shane2]

Looking for recommendations for two commercially available films and coatings, the best for...

#1 - Maximum reflectance, regardless AOI, for short wave sunlight primarily and, secondarily,
reflects some or a lot of long wave, and thirdly, also good emissivity for any of the spectrum.
Appreciate any suggestions for commercially available film and also for a coating.

#2 - A coating or paint that has maximum emissivity for majority and/or peak of long wave
spectrum and is, secondarily, also highly thermally conductive, too.

Thank you for any suggestions.

 

[Tom.G]

Solar Film as sold in larger hardware stores in the U.S. It is a plastic film you apply to windows to reduce heat gain from direct sunlight. We had to put it on our South facing bedroom window so the window air conditioner could keep the room cool in the Southern California Summer. It does cut quite a bit of visible light though, which isn't necessarily a bad thing in a bedroom.

 

[shane2]

I've been a fan of aluminum radiant barrier for years for reflecting solar heat and flat black paint for gaining it or emitting it, but am checking here for what's 'new & improved' to squeeze the maximum %'s.