Issue Date: April 20, 2015
Perovskite Nanowires Win Laser Battle
Lead halide perovskites are already famous for their ability to harvest solar energy, and now researchers are starting to show that the semiconductors make for promising lasers. Last year, British researchers demonstrated that lasers made with perovskite thin films and powered by light had a quantum efficiency of about 70%, meaning a laser emitted seven photons for every 10 absorbed. Chemists . . .
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