Perovskite-Silicon Tandem Meets Shingled Module Design at 25.6% Full-Area Efficiency
Oxford PV and Fraunhofer ISE combined perovskite-silicon tandem cells with matrix-shingled interconnection in 491 W rooftop and 546 W bifacial module variants.
What makes this development different
This result combines a tandem cell technology with a module interconnection approach intended for real module construction. Fraunhofer reported both a rooftop format and a larger bifacial format, which makes the result easier to compare with the physical form factor of current PV products than a small laboratory cell record.
Why shingling matters
Shingled interconnection changes how cell strips are laid out and connected. In this project the low-temperature adhesive process avoids conventional copper connectors in the interconnection step, while the tandem cells operate at higher voltage and lower current density than conventional single-junction cells.
Commercial readiness
Oxford PV is already associated with industrial production of perovskite-silicon tandem technology, but this specific shingled module configuration should still be treated as Pilot / Early commercial rather than assumed to be a widely available rooftop product.
What homeowners should compare when products arrive
Efficiency should be compared together with module area, rated power, temperature coefficient, warranty, degradation, installer availability and installed price. A 25%+ module can be valuable on constrained roofs, but the economics still depend on the whole system.
Source & verification
This analysis is based on the primary research or institutional source below. WattCostLab has paraphrased the technical findings and added homeowner-oriented context.
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Use current technology for today's project
Innovation can change future options, but current project decisions still depend on local energy prices, installed cost, climate and verified product availability.