Solar panels can seem like a mysterious or complex piece of technology, but the basic idea is surprisingly simple: they capture energy from daylight and convert it into electricity your home can use.

Professor Shanhui Fan and a team at Stanford University have built what they call “moonlight panels,” devices that generate electricity after the sun goes down by exploiting the temperature difference ...

In reality, many systems are set up so daytime production can help cover evening energy use as well.

Scientists at the University of New South Wales (UNSW) are developing a "reverse solar" panel, called a thermoradiative diode, which generates electricity by emitting infrared light (heat) into cold ...