Solar concentrators are typically massive and are relatively dangerous to operate. Especially if you do two axis concentration (I should know, nearly set my old office on fire with one...).
A residential scale solar parabolic trough could heat water to 160F to run through baseboard heaters in a hybrid solar/fossil fuel system.
It could also easily boil the water and turn it to steam, its all about the size of the trough and the speed water is moved through it.
This new material seems like an improvement over the current tech in this type of setup.
The advantage of concentrated solar is that it can still generate usable heat on mostly cloudy days, where flat collectors certainly do not.