Uploaded January 2026 | Updated September 2026, 2 weeks ago
The Solar Underdog That Could Rival Perovskite. Go to surfshark.com/undecided or use code UNDECIDED at checkout to get 4 extra months of Surfshark VPN! Perovskite solar cells are smashing efficiency records and starting to hit the market, but what if the real future of solar is a material you’ve probably never heard of? It’s called kesterite, and new research suggests it could match perovskites’ efficiency without any toxic lead in the stack. That could mean even cheaper, cleaner, and more efficient solar panels for your home down the road. Scientists just simulated a version of kesterite that could reach a 33.56% efficiency, brushing up against the theoretical limit for solar cells. The kicker? Kesterite is durable, where perovskite struggles to survive the great outdoors. With new kesterite efficiency records set this past year… could this underdog race ahead of perovskite and reshape the future of solar?
Watch Why Sodium Battery Companies Keep Failing youtu.be/nrTCgZmUFCY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ
Video script and citations:
https://undecided.tech/the-solar-underdog-that-could-rival-perovskite/
Get my achieve energy security with solar guide:
undecided.link/solar-guide
Follow-up podcast:
Video version - youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA
Audio version - undecided.link/stilltbd-podcast
Join the Undecided Discord server:
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👋 Support Undecided on Patreon!
patreon.com/mattferrell
⚙️ Gear & Products I Like
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Visit my Energysage Portal (US):
Research solar panels, heat pumps, and more to get quotes for free!
undecided.link/energysage
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EnergyPal's free personalized quotes:
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Some music provided by Epidemic Sound
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I may earn a small commission for my endorsement or recommendation to products or services linked above, but I wouldn't put them here if I didn't like them. Your purchase helps support the channel and the videos I produce. Thank you.
Chapters
00:00 - Intro
02:14 - Kesterite Composition & Competency
04:10 - Kesterite's Model Efficiency
06:15 - Recombination
09:41 - Production Methods
10:59 - Conclusion
The Solar Underdog That Could Rival Perovskite. Go to surfshark.com/undecided or use code UNDECIDED at checkout to get 4 extra months of Surfshark VPN! Perovskite solar cells are smashing efficiency records and starting to hit the market, but what if the real future of solar is a material you’ve probably never heard of? It’s called kesterite, and new research suggests it could match perovskites’ efficiency without any toxic lead in the stack. That could mean even cheaper, cleaner, and more efficient solar panels for your home down the road. Scientists just simulated a version of kesterite that could reach a 33.56% efficiency, brushing up against the theoretical limit for solar cells. The kicker? Kesterite is durable, where perovskite struggles to survive the great outdoors. With new kesterite efficiency records set this past year… could this underdog race ahead of perovskite and reshape the future of solar?
Watch Why Sodium Battery Companies Keep Failing youtu.be/nrTCgZmUFCY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ
Video script and citations:
https://undecided.tech/the-solar-underdog-that-could-rival-perovskite/
Get my achieve energy security with solar guide:
undecided.link/solar-guide
Follow-up podcast:
Video version - youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA
Audio version - undecided.link/stilltbd-podcast
Join the Undecided Discord server:
undecided.link/discord
👋 Support Undecided on Patreon!
patreon.com/mattferrell
⚙️ Gear & Products I Like
https://undecided.tech/shop/
Visit my Energysage Portal (US):
Research solar panels, heat pumps, and more to get quotes for free!
undecided.link/energysage
For a curated solar buying experience (Canada)
EnergyPal's free personalized quotes:
undecided.link/energypal
👉 Follow Me
Mastodon
https://mastodon.social/@mattferrell
Bluesky
https://bsky.app/profile/mattferrell.bsky.social
instagram.com/undecidedtech
Website
https://undecided.tech
Some music provided by Epidemic Sound
undecided.link/epidemic
I may earn a small commission for my endorsement or recommendation to products or services linked above, but I wouldn't put them here if I didn't like them. Your purchase helps support the channel and the videos I produce. Thank you.
Chapters
00:00 - Intro
02:14 - Kesterite Composition & Competency
04:10 - Kesterite's Model Efficiency
06:15 - Recombination
09:41 - Production Methods
10:59 - Conclusion
