In this post So why are photoelectric panels flat?, I've asked if we could use flat photoelectric panels with hemispheric cells. Most of the answers seemed to say it would not work.
Anyway, I'm asking again, with a simple design (this is only a draft of course):
The idea is to use hemispheres connected to inverted hemispheres, something like eggs boxes to maximize inter-reflections.
Of course, people will say that there are shadows, etc... But we have to consider a whole day, not only beginning and ending of a day, with maximized absorption. Also, for the same panel size, the surface receiving light is wider. What I'm asking is if inter-reflections could help to absorb more light finally.