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  "path": "/news/2026-03-strategy-efficiency-perovskite-tandem-solar.html",
  "publishedAt": "2026-03-27T11:00:01.000Z",
  "site": "https://techxplore.com",
  "tags": [
    "Engineering"
  ],
  "textContent": "Two stacked layers comprise tandem solar cells (TSCs), with each subcell absorbing different wavelengths of sunlight, which makes TSCs more efficient than single-layer solar cells. All-perovskite TSCs hold great promise for next-generation photovoltaics, with a theoretical efficiency exceeding 40%. However, their practical performance is hampered by mismatched crystallization kinetics between their wide-bandgap (WBG) and narrow-bandgap (NBG) subcells, leading to phase segregation and defect accumulation.",
  "title": "Integrated strategy unlocks 29.76% efficiency for all-perovskite tandem solar cells"
}