Novel capping strategy improves stability of perovskite nanocrystals

Perovskite materials have shown great promise for use in next-generation solar cells and LEDs, but their instability remains a critical limitation. Atoms on the surface are vulnerable to reactions that can degrade the material, so molecules that bind to the surface (capping ligands) are used both to stabilize perovskite nanocrystals and to control their properties. Researchers have used unique branched ligands to synthesize perovskite nanocrystals with greatly improved stability and uniform particle size.

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