When Photons Become Electrons: The Quantum Physics Behind Every Solar Panel
On April 25, 1954, three scientists at Bell Laboratories in Murray Hill, New Jersey, demonstrated something that would eventually reshape the global energy landscape. Daryl Chapin, Calvin Fuller, and Gerald Pearson held a press conference to showcase the first practical silicon solar cell—a device that converted sunlight directly into electricity with 6% efficiency. To prove it worked, they used the cell to power a small toy Ferris wheel spinning under a lamp. ...