Using broken solar cells from DIY solar panel projects you can make a great power generator.
but do not want to use hot solder.
This works good if you have a good clean connection and you are willing to sacrifice about 5% of the solar cells over all watt output.
You can actually make smaller panels this way increasing the wattage per square meter and saving on glass dimensions. This option works perfectly for joining together broken cells and making artistic designs with solar scraps that really produce power. This option is also perfect for solar model builders as this makes the panel one semi-rigid piece.