—Perovskite Nanowires Win Laser Battle “Semiconducting Materials: Chemists synthesize single crystals with ‘unheard of’ performance” 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 led by Song Jin of the University of Wisconsin, Madison, and Xiaoyang Zhu of Columbia University say they have now pushed that efficiency to nearly 100% using perovskite nanowires (Nat.
by Matt Davenport |
April 20, 2015