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Electronics
Promising Solar Material Could Lead to Better Lasers
A popular new material being used in solar cell research could lead to the development of less expensive lasers.


The new lasers technology involves taking advantage of perovskites, a material made from calcium titanium oxide being tested in solar cells. Perovskites are garnering much interest from the solar cell research community due to their ability to form near-perfect , complex crystalline structures from ready-made solutions and at low temperatures. 

Two teams led the research into the possibility of using perovskites as a laser material. One team, led by Edward Sargent, demonstrated that hitting a perovskites film with a beam of UV light caused the light to reemerge with frequencies in the infrared spectrum. They then went further, shaping the perovskites into spheres that bounce the light before it exits as infrared laser light. A second team, led by Henry Snaith, placed the film between a pair of Bragg reflectors and found that it produced infrared laser light when hit with a laser light made of shorter wavelengths.

Although the teams are some time away from creating commercially viable lasers, their research has demonstrated the wider value of perovskites. According David Ginley, a materials scientist at the National Renewable Energy Laboratory in Golden, Colorado. “It’s really remarkable how good the material is.”

ideaconnection.com (tdkhiem)
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