Has glass actually reached the purpose of turning into a ‘clear’ light-energy harvester?
What occurs if you expose tellurite glass to femtosecond laser gentle? That is the query Gözden Torun of the Galatea Lab, in collaboration with Tokyo Tech scientists, got down to reply in her dissertation when she made the invention that would someday flip home windows into single-material gentle assortment and detection units .
The outcomes are printed in PR utilized.
Curious about how the atoms within the tellurium glass would reorganize when uncovered to quick pulses of high-energy femtosecond laser gentle, the scientists encountered the formation of nanoscale tellurium and tellurium oxide crystals, each semiconducting supplies etched into the glass proper the place the glass was etched. uncovered. That was the eureka second for the scientists, as a semiconducting materials uncovered to sunlight can result in the era of electrical energy.
“As a result of tellurium is semiconducting, this discovering made us marvel if it will be doable to jot down sturdy patterns on the tellurite glass floor that would reliably generate electrical energy when uncovered to gentle, and the reply is sure,” explains Yves Bellouard, who heads EPFL’s Galatea Laboratory. . “An fascinating twist to the method is that no extra supplies are required within the course of. All you want is tellurite glass and a femtosecond laser to make an lively photoconductive materials.”
Utilizing tellurite glass produced by colleagues at Tokyo Tech, the EPFL crew introduced their experience in femtosecond laser know-how to switch the glass and analyze the impact of the laser. After exposing a easy line sample on the floor with a diameter of 1 cm, Torun found that it might generate a present when uncovered to UV gentle and the seen spectrum, reliably for months.
“It is improbable, we’re turning native glass right into a semiconductor utilizing gentle,” says Yves Bellouard. “We’re primarily remodeling supplies into one thing else, maybe approaching the alchemist’s dream!”.
Unique article: Making glass right into a ‘clear’ light-energy harvester
Extra of: Federal Polytechnic Faculty of Lausanne | Tokyo Technological Institute