U.S. Department of Energy @ENERGY
SOLAR 101: #DidYouKnow many different materials can be used to make solar cells? Silicon is the most common, but other materials can be cheaper, easier to make, and more colorful! You can even combine multiple materials in the same solar cell. Learn more: https://t.co/SHXOwkeXly https://t.co/TmjuKZv8p6 — PolitiTweet.org