Korean scientists extend perovskite solar cell life by removing lithium
A cell kept 95% of its efficiency after 1,000 hours of heat and humidity, in a lab test.
Scientists in Korea found a way to make a new kind of solar cell last longer in heat and damp air. It is still only a lab test.
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Why it matters
Durability is the biggest hurdle before perovskite reaches the panels people buy.
Watch: a simple idea for an old solar-cell problem.
The details
- The team is from the Korea Institute of Energy Research (KIER), with researchers from UNIST.
- Usual additives include lithium salt, which evaporates in heat and humidity and leaves gaps that shorten life.
- They used nickel oxide powder to capture the lithium, then filtered it out, leaving an additive-free layer.
- Conversion efficiency was 25.24% against 25.21% for conventional cells.
- The test ran at 85°C and 85% humidity for 1,000 hours, on small lab cells.
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