Microscopic Flaws In Perovskite Crystals In Way Of Improved Solar Conversion Efficiency, Potential For Big Boosts With Removal

Sign up for daily news updates from CleanTechnica on email. Or follow us on Google News!

There is great potential for significantly improving the solar conversion efficiency of perovskite solar cells, according to new research from the University of Washington and Oxford University — owing to the fact that there are microscopic flaws in the perovskite crystals used in such applications that can be removed/corrected, thereby greatly improving conversion efficiency.

Given that perovskite solar cells already had a lot going for them (and a lot of commercial interest), these new findings should only serve to further the attractiveness of the technology.

Oxford PV solar cell efficiency with perovskite

The real takeaway of the new research, though, isn’t so much the existence of the flaws, as the fact that these “flawed areas” can be “turned on” via the use of chemical treatments.

“Surprisingly, this result shows that even what are being called good, or highly-efficient perovskite films today still are ‘bad’ compared to what they could be. This provides a clear target for future researchers seeking to improve and grow the materials,” stated David Ginger, a professor of chemistry at the University of Washington.

With conversion efficiencies of around 20% already being reported in the lab (with regard to perovskite solar cells), the potential for big boosts to efficiencies are something to take note of — even if, for the time being, these are only “potential boosts.”

To be specific here — for those curious — the new findings (the flaws, etc) were made via the application of confocal optical microscopy. That approach works by correlating fluorescent images with others gathered through the use of an electron microscope, thereby exposing the “dark” (flawed) areas.

The new findings were recently published in the journal Science.

Image Credit: Oxford


Have a tip for CleanTechnica? Want to advertise? Want to suggest a guest for our CleanTech Talk podcast? Contact us here.

Latest CleanTechnica TV Video


I don't like paywalls. You don't like paywalls. Who likes paywalls? Here at CleanTechnica, we implemented a limited paywall for a while, but it always felt wrong — and it was always tough to decide what we should put behind there. In theory, your most exclusive and best content goes behind a paywall. But then fewer people read it!! So, we've decided to completely nix paywalls here at CleanTechnica. But...
 
Like other media companies, we need reader support! If you support us, please chip in a bit monthly to help our team write, edit, and publish 15 cleantech stories a day!
 
Thank you!

Advertisement
 
CleanTechnica uses affiliate links. See our policy here.

James Ayre

James Ayre's background is predominantly in geopolitics and history, but he has an obsessive interest in pretty much everything. After an early life spent in the Imperial Free City of Dortmund, James followed the river Ruhr to Cofbuokheim, where he attended the University of Astnide. And where he also briefly considered entering the coal mining business. He currently writes for a living, on a broad variety of subjects, ranging from science, to politics, to military history, to renewable energy.

James Ayre has 4830 posts and counting. See all posts by James Ayre