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Oxford PV - Perovskite-on-Silicon Tandem Solar Cell

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When integrated with traditional silicon solar cells, perovskite forms a tandem cell that surpasses the standard efficiency limits of silicon photovoltaics. The theoretical efficiency ceiling for a perovskite-on-silicon tandem cell is around 43%, compared to 29% for silicon-only cells. This innovative design effectively harnesses specific sectors of the solar spectrum, converting high-energy blue light into usable electricity. The raw materials for these cells are both widely available and economical, and they can be manufactured through simple, straightforward processes. Oxford PV's commercial-sized tandem cells have set a world-record for efficiency at 26.8%, as verified by Fraunhofer ISE, with a proven potential to exceed 30%. This high conversion efficiency showcases the substantial performance enhancement that perovskite technology brings to silicon-based photovoltaics, underlining its significance in advancing solar energy solutions.

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The climate crisis has made the clean energy transition a global imperative. Our perovskite-on-silicon solar cell delivers high efficiency at a low cost – essential for solar to replace fossil fuels and meet growing energy demand.

Today, the mainstream solar photovoltaic technology – silicon – is reaching its practical and economic efficiency limit. Our perovskite solar cell technology can break the solar efficiency barrier. Significantly improving the performance of silicon PV will enable cost reductions that will transform the economics and accelerate the growth of solar energy globally.

Enhances the photovoltaic industry
When built on top of conventional silicon solar cells, the resulting tandem cells can break through the silicon photovoltaic performance barrier.

High photovoltaic performance
A perovskite-on-silicon tandem cell has a theoretical efficiency limit of 43% vs 29% for silicon cells.

Wide adjustable bandgap
Ability to capture specific parts of the solar spectrum, particularly at the high-energy blue end and convert it into electricity.

Low-cost, thin-film photovoltaic solution
Widely available, low-cost source materials. Simple manufacturing processes.

Our commercial-sized perovskite-on-silicon tandem solar cell holds the world-record efficiency of 26.8%, as certified by Fraunhofer ISE. (See ‘Solar cell efficiency tables (Version 60)’, by Martin Green et al.) We have a clear roadmap to take our technology beyond 30% efficiency.

Our perovskite-on-silicon solar cell has achieved a certified 29.52% conversion efficiency. This validates the ability of perovskite to enhance the performance of silicon-based photovoltaics.