Core-Shell Si3N4 Stabilizes 26% Perovskite Solar Modules

• Nanocomposite boosts tough perovskites: amorphous–crystalline silicon nitride layer tames defects, lifts efficiency to 26.65%, and keeps large modules humming outdoors for 6+ months—real-world scalability in sight.

Chinese researchers say they’ve boosted the durability of perovskite solar cells by inserting an amorphous–crystalline silicon nitride nanocomposite at the buried interface, curbing charge buildup and defect evolution that undermine performance. The amorphous shell passivates surface defects while the crystalline core traps excess carriers, strengthening the internal electric field and improving charge extraction.

The Zhejiang University–led team reported 26.65% power conversion efficiency (26.37% certified) in single cells, with minimodules at 23.17% (22.2% certified). Large-area modules measuring 1,252 cm² sustained stable output for more than six months of continuous outdoor operation, a step toward scalable, durable perovskite photovoltaics suitable for real-world deployment.

How does silicon nitride nanocomposite boost perovskite module durability and efficiency?

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