http://en.wikipedia.org/wiki/Solar_cell#...
There a company on the market know testing 3-d printing of solar wafer, ultimately modules.
Check this article, pretty cool stuff
http://www.treehugger.com/clean-technolo...
from a quick Google search i found articles on scientific american pointing to carbon and this article below references Iron pyrite as top pick by university of california and states ther are 8 other top picks:
http://www.dailytech.com/Scientists+Find...
Probably
but
Its most likely on a different planet.
is there any other material that can replace silicon when manufacturing solar cell/panel
