What Is External Quantum Efficiency (EQE)?

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Gallium Arsenide Solar Cells with High EQE Efficiency

A Ph.D in electrical engineering requested a quote for the following:

Hello I am looking for standard single-junction GaAs solar cells with high EQE efficiency >24%.

Any size around 1cm x 1cm - 1inch x 1 inch? I just need a few.

Reference #301680 for specs and pricing.

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What is External Quantum Efficiency (EQE)?

Gallium arsenide (GaAs) solar cells are a type of photovoltaic cell that uses gallium arsenide as the semiconductor material. GaAs solar cells are known for their high efficiency in converting sunlight into electricity. They are particularly noted for their high External Quantum Efficiency (EQE), which measures the proportion of photons hitting the solar cell that are converted into electrons and contribute to the electrical current.

Here are some key features and benefits of GaAs solar cells with high EQE efficiency:

  1. High Efficiency: GaAs solar cells typically have higher efficiency compared to silicon-based cells. They gallium arsenide solar cells with high EQE efficiency. can convert a larger percentage of sunlight into electricity, making them highly effective for applications where space is limited.

  2. Broad Absorption Spectrum: GaAs has a direct bandgap, which allows it to absorb and convert a wide range of the solar spectrum, including higher-energy photons that silicon cells may not effectively utilize.

  3. Superior Performance in Various Conditions: These cells maintain high efficiency even under low-light conditions and at higher temperatures, making them suitable for use in a variety of environments.

  4. Durability and Longevity: GaAs solar cells are known for their robustness and long lifespan, which contributes to their use in high-reliability applications such as space missions and satellites.

  5. Advanced Applications: Due to their high efficiency and performance, GaAs solar cells are often used in high-end applications, including space technology, concentrator photovoltaics (CPV), and other specialized fields where maximum efficiency is crucial.

In summary, GaAs solar cells with high EQE efficiency represent a cutting-edge technology in the field of photovoltaics, offering superior performance and efficiency compared to traditional silicon-based solar cells.