PERC Silicon Solar Cells
Solar crosses the 20% efficiency threshold.
The commercialization of PERC (Passivated Emitter and Rear Cell) technology marked a massive turning point in solar energy, pushing standard silicon panels past the 20% efficiency mark and triggering a global boom in cheap solar deployment.
Open in interactive timeline →Key Numbers
- Efficiency (1954)
- 6%
- Efficiency (2015 PERC)
- 20-22%
Verified Facts
- For decades, standard solar panels hovered around 14-16% efficiency. PERC technology added a special dielectric layer to the back of the cell, reflecting unabsorbed light back into the silicon for a second chance at absorption.
- This seemingly small change boosted mass-market efficiency to over 20%, drastically reducing the "levelized cost of energy" (LCOE) and making solar highly competitive with fossil fuels for the first time.
- This was the crucial stepping stone between the original 1954 6% cells and the 2025 Perovskite tandem cells.
Frequently Asked Questions
What was PERC Silicon Solar Cells?
The commercialization of PERC (Passivated Emitter and Rear Cell) technology marked a massive turning point in solar energy, pushing standard silicon panels past the 20% efficiency mark and triggering a global boom in cheap solar deployment.
When did PERC Silicon Solar Cells happen?
PERC Silicon Solar Cells: 2015 CE.
Why does PERC Silicon Solar Cells matter?
Solar crosses the 20% efficiency threshold.
Sources & Further Reading
Cite This Page
AskHistoryAI. “PERC Silicon Solar Cells.” AskHistoryAI — Interactive Timeline of Everything. Updated 2026-09-11. https://askhistoryai.com/event/tech-perc-solar/
Every fact on this page is checked against the published fact ledger and methodology; sources are listed above.