How to MAKE PV Solar Panels

Step 4 "Broken" or "crystalline" Cell Panels

In the last step I mentioned that the Blue side is Negative and
the silver side is Positive.

Now all you have to do is solder your cells in Series to get
more voltage. To do that you only need one more wire for
each additional cell you add.
Remember each cell makes up to half a volt, so consider
a 12 volt panel to have 24 or more cells. A few extra is good.
One reason for that is a diode lowers the voltage just a little bit,
and another is that it's nice to have 12 volts for charging batteries
when it's not the sunniest time of day. A diode is used when the
panel charges batteries, so the batteries don't give any power
back to the panel in the dark. That would be a waste of free power.

Because the cells are so fragile, it would be good to install them
in a deep picture frame (shadow box) with double stick foam tape
or RTV glue. Be careful, this is permanent. You could make it
less permanent with hot-melt glue also.

At this point you don't need to think that the cells are "already broken",
and you will have a well working panel. You could hide the shard-shapes
with fluorescent lighting diffraction plastic over the framed panel if you like.
Perhaps you've seen a shard-cell panel just like that being sold before.