The Next Generation of Solar Energy | Perovskite Solar Cells

Perovskite solar cells are a remarkably cheap solar cell technology and have achieved remarkable growth since their inception a decade ago, sharply increasing in efficiency from 3.8% to 25.2%, near to their theoretical efficiency. Perovskite solar cells are a new technology and still needs to be scaled up for commercial applications, but perovskites have the potential to revolutionise the energy harvesting market, with cheap, high efficiency solar energy in the near future.

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We’d like to give a special thank you to Samuele from Bullaki ltd, for permission to use, and sending us, fantastic lab footage in the manufacturing of perovskite solar cells:

Scientific Video Protocols (Bullaki ltd), Back-Contact Perovskite Solar Cells | Prof. Sir Richard Friend et al. (University of Cambridge);

Bullaki ltd, Spray Coated Perovskite Solar Cells,

Other Sources:

Global Energy Graphs –
SEM Images of OPV:
Cardinaletti, Ilaria, et al. “Toward bulk heterojunction polymer solar cells with thermally stable active layer morphology.” Journal of Photonics for Energy 4.1 (2014): 040997.

Perovskite Review:
Roy, Priyanka, et al. “A review on perovskite solar cells: Evolution of architecture, fabrication techniques, commercialization issues and status.” Solar Energy 198 (2020): 665-688.

Revolutionizing solar power with perovskites | Sam Stranks | HT Summit 2017 –

NREL Chart –

Solar Cell Manufacturing:

Perovskite Stock:
Stock footage provided by Videvo, downloaded from


[1] – Revolutionizing solar power with perovskites | Sam Stranks | HT Summit 2017
[3] – “Cost and Performance Characteristics of New Generating Technologies, Annual Energy Outlook 2019” (PDF). U.S. Energy Information Administration. 2019.
[4] – NREL Best Research-Cell Efficiency Chart
[5] – Chamberlain, G.A., 1983. Organic solar cells: A review. Solar cells, 8(1), pp.47-83.
[6] – Xiao, Z. and Yan, Y., 2017. Progress in theoretical study of metal halide perovskite solar cell materials. Advanced Energy Materials, 7(22), p.1701136.
[7] – Saliba, M., Matsui, T., Seo, J.Y., Domanski, K., Correa-Baena, J.P., Nazeeruddin, M.K., Zakeeruddin, S.M., Tress, W., Abate, A., Hagfeldt, A. and Grätzel, M., 2016. Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency. Energy & environmental science, 9(6), pp.1989-1997.
[8] – Konstantakou, M. and Stergiopoulos, T., 2017. A critical review on tin halide perovskite solar cells. Journal of Materials Chemistry A, 5(23), pp.11518-11549.
[9] – Bullaki, The Path to Perovskite on Silicon PV | Prof. Henry Snaith,
[10] – Perovskite/silicon tandem solar cells approaching 30% efficiency in lab,
[11] – Advanced Science News, Almost 40% conversion efficiency predicted in new perovskite solar cell,
[12] – Liu, Z., Sofia, S.E., Laine, H.S., Woodhouse, M., Wieghold, S., Peters, I.M. and Buonassisi, T., 2020. Revisiting thin silicon for photovoltaics: a technoeconomic perspective. Energy & Environmental Science.

00:00 – Introduction
01:46 – Some Basic Solar Cell Physics
02:17 – Silicon
03:12 – Organic Solar Cells
03:52 – Perovskite Solar Cells
05:18 – Tandem Solar Cells
06:02 – The Future of Perovskites
07:13 – Outro #oureden


  1. Arthur Robey on October 11, 2020 at 4:51 pm

    The sun provides the energy.
    How much better to carry a little bit of sun around with you.
    Enter the SAFIRE experiment.
    17% input energy, 100% output.
    Results published in 2019.
    The sun, you see, is neither a gas ball, nor a nuclear explosion.
    It is condensed matter hydrogen upon which Birkland currents discharge.
    How easy it has become to emulate the prodigious energy of the sun when the correct model is used!
    You can find the SAFIRE experiments results on YouTube.

  2. Dave Hibbs on October 11, 2020 at 4:52 pm

    Almost the same for one bolt of lighting!! If we could only figure out how to harness that power!

  3. Zuddas. S on October 11, 2020 at 4:53 pm

    Very well explained you brought a complex topic down to a level that was understandable!

  4. Dave Hibbs on October 11, 2020 at 4:54 pm

    If you really think about it, the solar power system is really only for one thing!! Recharging the batteries!!! Without the battery system the solar power grid system is about as worthless as tits on a bull!!!

  5. Isabelle Isabelle on October 11, 2020 at 4:55 pm

    I wonder if they project a date for selling it like for RV solar panel

  6. Matthew Suggs on October 11, 2020 at 4:57 pm

    Here is a suggestion, turn off the ignoring background sound,

  7. John Doe on October 11, 2020 at 5:03 pm

    Lets see how do I make Elect more expensive than petrol,,, Cali @50 cents kwh we can have feces and Mexico as far as the eye can see covered with solar panels that how. Solar expert here just ask and I’ll explain it. You bought the thermal solar scam now youre about to buy the elect solar scam

  8. Wild Otter on October 11, 2020 at 5:04 pm

    Get it patented in Britain as the USA has a law that says they will not patent anything that will hurt the economy! So we’ll have storms which has billions of dollars worth of damage and a polluted earth until somebody grows a pair!

  9. Marc Abelha on October 11, 2020 at 5:05 pm

    You gotta looove science!

  10. John Henson on October 11, 2020 at 5:05 pm

    The opening shot showed vast expanses of FREE water. Called oceans. It is FREE guys and accessible to all. So why don’t we use it to water deserts? Same as sunlight, available to all and free. So why don’t we use sunlight? Think about it. The answer is the same for both. Too freaking expensive.

  11. Priyanka Roy on October 11, 2020 at 5:06 pm

    Great video!! And thanks for citing my work 🙂

  12. Andrew Hart on October 11, 2020 at 5:06 pm

    Learnt something. Thanks

  13. Victory First on October 11, 2020 at 5:06 pm

    Question for you Sir. I was told that it would take four to five solar cells to equal the amount of energy one cell can get from heating of hot water ????? Can you tell me if that is true ??? Thanks

  14. Todd Downey on October 11, 2020 at 5:08 pm

    Big companies and greed along with corruption is why we have not advanced .

  15. yaimavol on October 11, 2020 at 5:09 pm

    Oil is abiotic and renewable. The science on this is widely available, but you’ve just never looked for it.

  16. Jeff Harmed on October 11, 2020 at 5:09 pm

    Thanks for sharing. Of course the idea of self-sufficiency is very attractive to an Englishman whose home is his castle. The current solar technology goes a long way towards energy independence but with a high 7 to 10 year payback period, it is not competitive. However with the new cells pushing 30% efficiency (compared with the current 20%) we might reach the tipping point some day soon. Studies in agriphotovoltaics (APV) have synergies in plant life and improved power of 180%, so the driving force and momentum is towards self sufficiency. Now if we can just replace the pesky globalists with self sufficient politicians we might be able to avoid 1984.

  17. Martin Grillo on October 11, 2020 at 5:10 pm

    I find Cryobatteries (Highview Power), RedoxFlow Batteries (JenaBatteries) and high temperature Superconductors (Theva) interessting. All three of them are ready to market.

  18. Frank D on October 11, 2020 at 5:10 pm

    Solar energy output varies across the USA depending on the amount of sunlight received. Same is true for wind energy. The DOE has maps showing the amount of energy output for wind and solar in various areas of the country. Also, without a means to store massive amounts of energy utilities will have to provide back up power when solar and wind output is low unless you allow brownouts and blackouts to become the norm. This means shutting down industry, etc. More efficient solar cells is great news but the renewable energy subject is far more complex.

  19. Haldun Abdullah on October 11, 2020 at 5:11 pm

    The main issue in the utilization of solar energy based upon the interception of sunlight on earth is available land size. With present population levels and breeding rates, evermore more land space will be needed to feed the people. There can be no cheap land to put the collectors!

  20. Scott Shadrick on October 11, 2020 at 5:12 pm

    Ending our reliance on fossil fuels is very simple. If our government would only grant the Koch Brothers rights to harvest all energy produced by the sun and the right to charge people to use that energy, the use of fossil fuels would end abruptly and CO2 emissions would be drastically reduced.

  21. Jannik on October 11, 2020 at 5:14 pm

    You could make a video about how to replace fossile fuels in cars

  22. Lucy Biggers on October 11, 2020 at 5:20 pm

    Thank you for making this video! Its really cool and your level of expertise shines through

  23. Maximus Sallam on October 11, 2020 at 5:22 pm

    The technology is fascinating, the background music is horrible.

  24. Tony Sanders on October 11, 2020 at 5:23 pm

    Magnetic generation of energy is the only way to go geothermal for power plants

  25. ViriatoII on October 11, 2020 at 5:24 pm

    Are they more, less or equally toxic/hard to recycle? I notice they use lead but want to avoid it.

  26. Warren Newman on October 11, 2020 at 5:24 pm

    Could graphene be added to give structural integrity as a defense against corrosion .Also graphene is also flexible and conductive. I would have thought it to be at the top of the list for sustainability. Also what will happen with the existing solar panels; will they become another nightmare for toxic waste dumping. As a reliable source to graphene becomes available i always assumed it would propel most modern technology into the future.

  27. nightlightabcd on October 11, 2020 at 5:27 pm

    Shows clip of anti-environmental, anti-truth, anti common sense, anti-morality, anti-American Trump way too long!

  28. Suleyman Eliyev on October 11, 2020 at 5:27 pm

    Солнце наш мозг енергия И база Инопланетяан

  29. Bill Petersen on October 11, 2020 at 5:28 pm

    While we are waiting. Base load nuclear, can take the massive Chinese coal burning, off line.
    Nuclear is managed, but contained risk. Coal is suicide.

  30. Robin Israelsson on October 11, 2020 at 5:29 pm

    Is the price for solar the real price or price after goverment subsidices?

  31. Molly Mahoney on October 11, 2020 at 5:29 pm

    Do you have any weigh in on Perovskite vs multi junction cells? I saw on the NREL website that their potential efficiency is extremely high (47.1%), but I don’t fully understand the challenges or opportunities compared to Perovskites. Love your video by the way!!

  32. George Shevchuk on October 11, 2020 at 5:31 pm

    We live in a corrupt world, but one silver lining is that deceptions and controls of the system are having a hard time keeping up with the rate of advancements and the increasing variation of energy ideas for the world.

  33. vincenzo bersanoze on October 11, 2020 at 5:38 pm

    Thank you so mutch for the transcript!

    It’s a super video you did. New techs are so intersting. Do you work in this field? If not, how do you keep up to date and disciver these techs?

    How do you think we will overcome the issue of intermittency of pv and eolian?

    Keep up the good work 😉

  34. Crypto Generation on October 11, 2020 at 5:38 pm

    Only way you will get cheap energy is if you work it out and do it yourself…

  35. Trius on October 11, 2020 at 5:38 pm

    The earth is saturated with energy from the sun but accessing that energy is not easy. Solar cells are less efficient than even petrol engines. We are still far away from 80% efficiency or any major game changing tech.

  36. Jeff in Canada on October 11, 2020 at 5:40 pm

    I down voted this video, not because the topic and information weren’t compelling, but because I had to stop watching the video due to the incessant droning of your background noise/music, or whatever the hell it is. It drowned out your voice to the point where I had a difficult time trying to hear your voice. Why the hell would you put that background noise in there? Do you think that it sounds cool? or professional? or are you afraid that we might actually hear what you are saying if there is no noise?

  37. Lister Dave on October 11, 2020 at 5:41 pm

    Since some of the light goes right through the cell would it make sense to have a reflective surface on the back to send that ‘unused’ light through the cell a second time? I think the effect would be the same as doubling the thickness of the cell.

  38. Steven Bass on October 11, 2020 at 5:42 pm

    Only if it can be made usable.

  39. electronzapdotcom on October 11, 2020 at 5:42 pm

    Nice video! Hope your future projects go very well!

  40. Liss Munich on October 11, 2020 at 5:42 pm

    This is nice! I hope this gets more attention.

  41. George Shevchuk on October 11, 2020 at 5:43 pm

    Thorium Molten Salt Reactors are the solution. The more you learn about them the more you realize that they are a no brainer. PS They can not melt down and they can burn up our current nuclear waste to get more energy out of it while reducing the radioactive half/life of the waste to a fraction of what it was. From 10,000 years to about 300 to 500 tops.

  42. BRUCE LIU on October 11, 2020 at 5:44 pm

    emperor’s new groove!

  43. J. Curtis on October 11, 2020 at 5:44 pm

    Lovely, important update and education, thank you! I would love to learn more details of how phonon spectrum/propagation enhances absorption coefficient when wells are displaced…perhaps too in-the-weeds, but this was a novel and intriguing concept for me. Great work!

  44. The Survivalist on October 11, 2020 at 5:46 pm

    I watched series were humanity was forced into space to survive, and to cut the food production levels, they melded their DNA to produce sugars and fats within each human, by manipulating our DNA with tree DNA and algae DNA. It cut the need to eat food by 75%!

    Solar is an answer but their are other solar based technologies that would also aid humanity in energy food production!

  45. J Chen on October 11, 2020 at 5:47 pm

    Need to achieve high efficiency without toxic Pb, and long stability.

  46. Magnus Johansson on October 11, 2020 at 5:47 pm

    Great explanation. Recent subscriber to your channel and I have now watched all of your videos; not sure why you don’t have more subs. Regarding perovskite solar cells — I hope it doesn’t become one of those.. "it’s only a decade away" technologies that never comes to fruition, but from what you’ve said, it looks promising.

    On a tangent, it’d be good to see some more videos from you, as they are well researched with the relevant sources attached — there is obviously a lot of work that goes into them. There are so many videos for you to make, but I guess picking a topic and researching it takes time, be it nuclear, direct air capture, energy storage, negative affects of "green" tech, transport, forestry, agriculture, land requirements, water etc.. and the biggest question of all, can we actually avert disaster? The list goes on and on!

  47. silverfoenix on October 11, 2020 at 5:47 pm

    I read somewhere the amount of lead in these panels is negligible! so all in all it is the way to go~

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