Perovskites, a ‘dirt cheap’ alternative to silicon, just got a lot more efficient

[Meredith Poor + 867]

https://www.rochester.edu/newscenter/metal-perovskite-solar-cells-vs-silicon-efficiency-550212/

Essentially, energy conversion is '250% more efficient'. If existing panels are about 20% efficient, then 250% of that would be 50%, so instead of producing 200 watts of electricity per square meter, they would produce 500 watts. Some perovskites can do better, so the conversion efficiency could be as high as 60%, or 600 watts per square meter.

Someone living alone in a one bedroom apartment might use 1Mwh per month, or 1000Kwh assuming an electric water heater and a heat pump HVAC. 1000Kwh / 30.5 days is roughly 33Kwh per day. 33Kwh divided by 5 hours of solar exposure per day is 6600 watts worth of solar panels. At 20% conversion efficiency, this would cover 30 square meters or 330 square feet. At 60% conversion efficiency, this would require 10 square meters or 110 square feet. A typical car is 6' wide x 15' long, or 90 square feet. At 60% conversion efficiency, this would be almost enough solar power to eliminate any need to 'charge up' from an external power source.

[turbguy + 1,187]

So...

Someday, to recharge your EV, you just let it set in full sunlight for a handful of hours.

...and avoid driving at night.

Edited April 10 by turbguy

[footeab@yahoo.com + 2,007]

Now if said perovskits did not DIE due to exposure to light or.....🤣

Edit: Fine I actually read it and no, it is not 250% increase... Rather it is one aspect of said solar cell over one small area can increase by 250% gain.  It is based on a wave function, so total area gained will be area under the curve of the sine function.  Not peak.  So, we are talking most likely about 30% increase(nothing to sneeze at).  Oh yea and it requires a noble metal like silver, gold, platinum, niobium. Good Luck on that one.  This is like fuel cells, they work wonderfully.... if only we had mountains of platinum....

Edited April 10 by footeab@yahoo.com

[TailingsPond + 176]

16 minutes ago, footeab@yahoo.com said:

Now if said perovskits did not DIE due to exposure to light.....🤣

In fairness most everything is damaged by exposure to sunlight.

Skin cancer, photo-oxidation of paint, plastics, etc.

[footeab@yahoo.com + 2,007]

1 hour ago, TailingsPond said:

In fairness most everything is damaged by exposure to sunlight.

Skin cancer, photo-oxidation of paint, plastics, etc.

Suggest you understand what the word, fairness, means before using it

[Paul-S + 6]

On 4/10/2023 at 12:25 PM, turbguy said:

So...

Someday, to recharge your EV, you just let it set in full sunlight for a handful of hours.

...and avoid driving at night.

Batteries work just as well at night. 

[turbguy + 1,187]

On 5/10/2023 at 6:26 PM, Paul-S said:

Batteries work just as well at night. 

Agree!

That said, if solar really gets good, why use batteries at all?

[Michael Sanches + 177]

On 5/12/2023 at 8:33 PM, turbguy said:

Agree!

That said, if solar really gets good, why use batteries at all?

What if the future of transportation is underground?