Parabolic type collectors already exist, I've seen a few around, has he checked out the competition?  I stumbled upon  a few when I was trying to source some PVs a while back, but I don't have the links.

I'm sure sun-tracking devices are around already, but if you might be able to make something better definitely go for it!

Last I heard solar dyes could be replacing the current PV technology, maybe check out that technology too?