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Roll-to-roll fabricated perovskite solar cells under ambient room conditions

nature.com

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Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#41

Post by akamaka »

londons_explore wrote: post #7

The market need for cheaper solar cells seems to have evaporated, since the vast majority of the cost of solar projects these days is always in labour/land/wiring/inverters/grid connection/maintenance contracts. That means saving a bit of money on the panels in return for lower efficiency is never a good deal.

Perovskite solar cells are the best candidate for solving the problem that you pointed out. The best perovskite/silicon tandem cells in the laboratory have 33% efficiency, and the theoretical limit for this type of cell is 43%.

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#42

Post by KeplerBoy »

sandworm101 wrote: post #31
KeplerBoy wrote: post #16

Earlier quoted context omitted.

Solar panels are already cheaper than wood, which is amazing.

Where are PV panels cheaper than wood? A 4x8 sheet of plywood runs about 40$ in north America, and roughly double that in Europe. I don't see PV panels anywhere near that price.

You don't want a plywood fence though. PV panels are cheaper than the decorative wood fences are made of. Wood fences are easily 100€/m around here.

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#43

Post by Osiris »

KeplerBoy wrote: post #16
hackerlight wrote: post #14

Earlier quoted context omitted.

Like solar fences: https://next2sun.com/en/solar-fence/

Solar panels are already cheaper than wood, which is amazing.

It’s not cheaper than wood. It’s cheaper than certain specific kinds of wood used in specific applications.

A 2x4 stud is like $3, for example. Decorative cedar is quite a bit more expensive.

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#44

Post by thimkerbell »

SquareWheel wrote: post #19
yareal wrote: post #17

As an outsider, what's the appeal of PeSC? The paper says they are less efficient and harder to manufacture, but also that they are the "next generation". I would have thought the next generation would be more efficient or easier to manufacture or both.

As I understand it, silicon cells have largely been optimized to near their peak potential. There's not much room left for improvements at this point. Organic and perovskite cells have a higher potential efficiency. Just like was the case with silicon, it will take years of development and incremental improvements to see higher efficiencies in these technologies. Silicon cells were also not very good at the start of…

Which ones don't have heavy metals?

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#45

Post by jandrese »

dr_dshiv wrote: post #29

Here is the graph of exponential installed solar capacity [1]. Like Moore’s law, continuous technological innovation and investment will be required to keep the pace. We just hit 1 terawatt— and doubling time seems to be about every 3 years. So… 1,2,4,8,16,32,64,128,512,1028, 2056 terawatts in 30 years? With 20% capacity, that’s equivalent to >300,000 Million Tons of Oil (MToE) per year. Current global energy consump…

Ahh, the classic case of seeing the bottom half of an S curve and projecting it out to infinite exponential growth.

The number of times things have experienced infinite exponential growth in all of history starting from the Big Bang: 0.

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#46

Post by ncr100 »

jandrese wrote: post #45
dr_dshiv wrote: post #29

Here is the graph of exponential installed solar capacity [1]. Like Moore’s law, continuous technological innovation and investment will be required to keep the pace. We just hit 1 terawatt— and doubling time seems to be about every 3 years. So… 1,2,4,8,16,32,64,128,512,1028, 2056 terawatts in 30 years? With 20% capacity, that’s equivalent to >300,000 Million Tons of Oil (MToE) per year. Current global energy consump…

Ahh, the classic case of seeing the bottom half of an S curve and projecting it out to infinite exponential growth. The number of times things have experienced infinite exponential growth in all of history starting from the Big Bang: 0.

/jk just wait long enough and that zero will go to Infinity

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#47

Post by durkie »

myself248 wrote: post #20

Ovonics was doing roll-to-roll solar cells in the 1980s, were they not? This is exciting if the technology scales better or something, but I can't help feeling that we've stagnated a bit.

What material though? Nanosolar was also doing CIGS roll-to-roll cells, and that didn't work out too well for them.

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#48

Post by jandrese »

abathur wrote: post #40
sandworm101 wrote: post #31

Earlier quoted context omitted.

Where are PV panels cheaper than wood? A 4x8 sheet of plywood runs about 40$ in north America, and roughly double that in Europe. I don't see PV panels anywhere near that price.

I can't recall ever seeing a plywood fence in North America.

You do see them from time to time in especially rough rural areas. I can remember one that was apparently painted from the "oops" paint section of the local hardware store surrounding a strip club next to a junkyard.

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#49

Post by axus »

jandrese wrote: post #45
dr_dshiv wrote: post #29

Here is the graph of exponential installed solar capacity [1]. Like Moore’s law, continuous technological innovation and investment will be required to keep the pace. We just hit 1 terawatt— and doubling time seems to be about every 3 years. So… 1,2,4,8,16,32,64,128,512,1028, 2056 terawatts in 30 years? With 20% capacity, that’s equivalent to >300,000 Million Tons of Oil (MToE) per year. Current global energy consump…

Ahh, the classic case of seeing the bottom half of an S curve and projecting it out to infinite exponential growth. The number of times things have experienced infinite exponential growth in all of history starting from the Big Bang: 0.

Isn't the universe expanding exponentially since the Big Bang?

Re: Roll-to-roll fabricated perovskite solar cells under ambient room conditions

#50

Post by cma »

axus wrote: post #49
jandrese wrote: post #45

Earlier quoted context omitted.

Ahh, the classic case of seeing the bottom half of an S curve and projecting it out to infinite exponential growth. The number of times things have experienced infinite exponential growth in all of history starting from the Big Bang: 0.

Isn't the universe expanding exponentially since the Big Bang?

The expansion rate slowed down dramatically after the big bang and then sped up again, from Wikipedia:

> Cosmic expansion subsequently decelerated to much slower rates, until at around 9.8 billion years after the Big Bang (4 billion years ago) it began to gradually expand more quickly, and is still doing so.

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