Polymer imprinted with movies' etchings captures more sunlight
Using Blu-ray Discs to watch movies is so 2006. Now they can boost the efficiency of solar cells. Imprinting the discs’ data-storing etchings onto solar cells increases the cells’ absorption of sunlight, according to a study published November 25 in Nature Communications.
Previous research has shown that making nanometer-sized etchings onto a solar cell’s surface helps trap more light, so Jiaxing Huang, a materials chemist at Northwestern University in Evanston, Ill., looked to Blu-ray Discs, which store data in the form of tiny bumps and pits. He and his team collected various movies and TV shows, and used a mold of the discs to imprint their patterns onto polymer solar cells.