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Large perovskite solar panels hit record efficiency and pass industry durability tests
A new surface coating helped panels about three-quarters of a square meter in size turn 22% of sunlight into electricity and survive standard reliability tests.
What the scientists did
Most solar panels today are made from silicon. Perovskites are a different family of materials that can be printed or coated onto surfaces cheaply, and they’re very good at catching sunlight. Their big problem has been durability: they tend to break down with heat and moisture, and big panels perform worse than tiny lab samples.
The team changed the recipe for making the perovskite film and then treated its surface with a chemical coating (a lead carboxylate) that is more stable than the coatings used before. That let them make panels at a size factories actually use, in normal room air.
Words to know
Efficiency
The share of sunlight hitting a panel that gets turned into electricity.
- 24.0% on an 810 cm² panel (about the size of a large notebook)
- 22.0% on a 0.72 m² panel (about the size of a coffee table top)
Perovskite
A family of crystal materials named after a mineral. Some perovskites are excellent at absorbing light.
IEC 61215
The standard set of stress tests solar panels must pass to be sold, including heat, cold, humidity and long light exposure.
- Damp heat
- Temperature cycling
- Humidity-freeze
What they found
The panels reached a certified 24.0% efficiency on an 810 cm² panel and 22.0% on a 0.72 m² panel, which the authors call the best reported for factory-ready perovskite panels. They passed all of the IEC 61215 reliability tests. Coverage of the study also reports that, in outdoor monitoring, the panels produced more energy per watt of rated power than commercial silicon panels.
Why it matters to you
Cheaper, high-performing solar panels could lower what homes, schools and businesses pay for electricity, and make it easier to put solar on more rooftops. Because perovskites can be coated onto surfaces, they could someday be built into windows, car roofs or backpacks.
Where this could lead
Lower-cost solar panels
If they can be mass-produced reliably, perovskite panels could cost less to make than silicon.
Few yearsPanels that stack with silicon
Adding a perovskite layer on top of silicon can capture more of the sun's colors and raise efficiency.
Few yearsSolar in new places
Lightweight, flexible versions could power devices, vehicles or building surfaces.
Longer termThese are possibilities the research points toward, not promises. Most early findings take years of testing before they reach everyday life, and some never do.
Why scientists care
Scaling up has been perovskites’ biggest hurdle: record-setting cells are often smaller than a fingernail. Showing high efficiency and certified durability at about three-quarters of a square meter is a key step toward factories.
Keep in mind
Passing standard tests is not the same as lasting 25+ years on a roof like silicon panels do; long-term outdoor data is still needed. Perovskites also contain lead, so safe manufacturing and recycling matter.
How far along is the science?
- Peer-reviewedChecked by independent experts before a journal published it. The strongest level of evidence, but still not the final word.
- PreprintShared publicly before peer review so others can see it early. Results may change, and experts have not formally checked it yet.
- Conference talkPresented to other scientists at a meeting. Usually short and early; a full paper may come later.
- Agency reportPublished by a science agency such as NASA, NOAA or NIH. Reviewed internally, but not by an outside journal.
- Press releaseAn announcement from a university or company. Useful, but always check the research it describes.
How soon could it reach you?
- Could reach you soonCould show up in products, services or advice within about 1 to 3 years.
- A few years outPromising, but needs more testing or engineering first, likely 3 to 10 years.
- Long-term scienceBasic research that builds knowledge. Real-world uses, if any, are far off.
- Small stepA small update to earlier work. Useful to researchers, but not a change you would notice yet.
Every story links to its original source: the paper itself, or the conference program when no paper is out yet. Explanations are written with AI, usually from the paper’s abstract (each story says what it was written from), then checked against the source. We only use journals, recognized preprint servers, science agencies, scientific conferences and established science news outlets.