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Perovskite-on-Silicon Tandem Tech Breaks Solar Cell Efficiency Record

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WASHINGTON, D.C., Aug. 24, 2021 — Oxford PV researchers have paired metal halide perovskites with conventional silicon to create a solar cell that overcomes the practical efficiency of 26% that silicon cells alone can deliver. Using perovskite-on-silicon tandem technology, the researchers demonstrated a cell with efficiency of greater than 29.5%.

Tandem solar cells with world-record efficiency of 29.52% could help rapidly scale up solar energy. Courtesy of Oxford PV.
Tandem solar cells with world-record efficiency of 29.52% could help rapidly scale up solar energy. Courtesy of Oxford PV.
From a materials perspective, Oxford PV said, perovskites fulfill all optoelectronic requirements for a photovoltaic cell, and they can be manufactured using existing processes. Perovskite can also be deposited as a layer onto a conventional silicon solar cell; the elemental composition of the perovskite material is readily available within existing supply chains; and the higher power output of perovskite-on-silicon tandem cells could offset the carbon footprint embodied in the production of high-purity silicon required for photovoltaic cells.

Oxford PV researchers say they are very close to starting mass commercial production at the company’s factory in Brandenburg, Germany.
Aug 2021
A sub-field of photonics that pertains to an electronic device that responds to optical power, emits or modifies optical radiation, or utilizes optical radiation for its internal operation. Any device that functions as an electrical-to-optical or optical-to-electrical transducer. Electro-optic often is used erroneously as a synonym.
With respect to a lens, the reciprocal of its focal length. The term power, as applied to a telescope or microscope, often is used as an abbreviation for magnifying power.
solarMaterialsperovskitesphotovoltaicssolar cells efficiencysilicondeposition processesOxford PVEuropeAmericascommercialConsumeroptoelectronicspowerenvironmental

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