Join Matt Ferrell from the YouTube Channel, Undecided, and his brother Sean Ferrell as they discuss electric vehicles, renewable energy, smart technologies, and how they impact our lives. Still TBD continues the conversation from the Undecided YouTube channel.

309: Is Perovskite Solar Finally Here? Joel Jean - Swift Solar Interview

July 22, 2026 46:35 22.36 MB Downloads: 0

Perovskite solar has promised a revolution for over a decade, so is it finally real? Matt and Sean talk with Joel Jean, co-founder and CEO of Swift Solar, the US startup spun out of MIT and Stanford. Joel explains how stacking a perovskite film on top of silicon lifts a solar cell's efficiency ceiling from 30 percent to about 45 percent. He also breaks down the three "tooth fairies" every new solar technology has to solve: performance, lifetime, and cost. So is perovskite tandem solar finally ready for your roof? Or is 25 year durability still one miracle away?

Chapters:

  • 00:00: Intro
  • 03:20: Joel Jean Interview
  • 41:02: The Super Soaker Mailbag

Watch on YouTube: https://www.youtube.com/watch?v=vtmX0st3uOk

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