Insights
Chinese manufacturer BOE has reported a small‑area perovskite solar cell efficiency of 27.37 %, a top lab figure for this material. The number matters because it matches NREL’s high‑20% research range, but independent certification and long‑term stability data are not yet public.
Key Facts
- BOE reports a stabilized small‑area cell efficiency of 27.37 % in company updates and industry press.
- Independent, internationally recognised laboratory certification (for example NREL or Fraunhofer) has not been published yet.
- Pilot‑module tests from BOE show lower full‑panel efficiencies (about 20.11 %) as expected when scaling from small cells.
Introduction
A recent company announcement from Hefei BOE Solar Technology states a stabilized small‑area perovskite solar cell efficiency of 27.37 %. This is a noteworthy lab figure because it sits at the top end of recent research values. The claim is timely for investors and engineers but needs independent verification and durability proof to be decisive.
What is new
BOE reported in late 2025 that a small‑area perovskite cell reached 27.37 % stabilized power conversion efficiency (PCE). Industry outlets such as PV‑Magazine and EnergyTrend carried the company statement and added pilot‑module numbers: a 2.88 m² rigid pilot module producing 579 W (about 20.11 % area efficiency) and flexible samples with lower pilot efficiencies. The laboratory claim is classified as a research‑cell result — meaning it applies to a small test device rather than a finished rooftop panel. Crucially, the announced lab test was said to be performed by a third party in China, but the testing lab name and the formal certificate have not been published in the sources available today.
What it means
A 27.37 % perovskite solar cell, if confirmed under standard test rules, would place this technology at the leading edge for single‑junction research cells. “Perovskite” refers to a class of light‑absorbing materials that are easier to make in labs than some silicon cells; a simple example: they can be printed or coated like ink instead of etched from thick wafers. However, research‑cell records often do not translate directly to commercial modules. Real‑world panels must prove long‑term stability, moisture resistance and consistent yields at large area. For consumers and utilities, the immediate benefit is lower potential cost per watt in the future; the immediate caveat is that commercial readiness depends on independent certification and multi‑year durability data.
What comes next
Next steps are straightforward: independent labs such as NREL or Fraunhofer (or accredited Chinese test centres) should publish verification reports showing stabilized maximum power under defined cell area and steady‑state conditions. Researchers will look for long‑term MPP (maximum power point) tracking and accelerated ageing data (for example 1000+ hours at MPP) to judge stability. On the industrial side, follow‑up will check intermediate device sizes (for example 30×30 cm) and pilot‑line yields to estimate how close the technology is to cost‑competitive modules. Until those reports appear, the 27.37 % figure should be treated as a lab claim requiring external confirmation.
Conclusion
BOE’s 27.37 % claim for a perovskite solar cell is an important research milestone that aligns with the top values listed by international databases. Yet it remains a company‑reported lab figure until independent certification and durability data are published. Readers should watch for verified lab reports and pilot‑module durability tests to see whether this research lead becomes an industrial advantage.
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