How do solar panels work

I think everyone has seen these solar panels on rootftops for years. Or maybe atop highway warning sings or etc. Is there anybody really have an idea about how they’re actually work? How the sunlight turn into the electricity? I think, we’ll see these solar panels a lot in the future, it’s good to be sure about how do solar panels work?

Might be, the sunlight will be the most important electiric resources in one day. So let’s get the be sure about solar panels, check out of video.