human
I've heard that a lot of people are using a new type of solar panel. What is it and where can I get one?
assistant
The new type of solar panel is called a thin-film solar panel. It's made up of layers of semiconductors, like silicon, that are deposited onto a substrate. The substrate is usually glass or plastic. Thin-film solar panels are more efficient than traditional solar panels because they're thinner and lighter. They also cost less to produce.