'crystal-coated solar cells'

[John Rose]

Story on p 36 Guardian 15/08/2020, interesting, but dunno if it's someone (Oxford PV) selling snake oil, a common concomitant of this hobby.

Says  that these 'next generation' panels, coated with perovskite, 'will be able' to increase output by 'almost a third, compared to uncoated panels.

Part of the doubt comes from the bad arithmetic involved in stating an efficiency gain from typically about 22% to  a 'new record' of 27.3% to be 'almost a third' when my arithmetic suggest less than a quarter.

The increase is said to derive from the got-at product's ability to covert over a wider bandwidth of the solar spectrum. This sounds fishy to me.

Comments?

JRR

[John Haynes]

Hi John

It does seem that Perovskite has some benefits if the attached article is to be believed.

With the focus on Green Energy, it's perhaps not surprising that Solar Panel technology is getting due for an update. In many respects, today's standard Solar panel isn't much different from those installed a decade ago.

Yes, there's bi-faced panels available now for commercial installations but even if the gain in output with Perovskite is only 20%, then that in itself is quite laudable.

Maybe not all smoke and mirrors ?

https://www.solarpowerworldonline.com/2020/02/perovskite-solar-cells-hero-villain-or-just-plain-fantasy/ 

John Haynes 

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[Anwar Mahmood]

Oxford PV are a genuine company. Been following their news stories for a while.

They bought an old Bosch PV factory in Germany, and partnered with Switzerland's Meyer Berger to manufacture these cells.

The silicon uses one part of the spectrum; perovskite another.

Perovskite crystals are unstable; Oxford PV found a way to stabilise them.

They could change the viability of rooftop solar.

They did let slip that they plan for silicon + perovskite hitting 30% efficiency, but the endgame is all-perovskite at higher efficiency, lower cost and weight than silicon + perovskite.

One to keep an eye on... 

[Ian Bocking]

BBC had an item in May.

https://www.bbc.co.uk/news/business-51799503
Kind Regards,
Ian Bocking

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