
LED Light Soaker
Turning the new into the known
Our next-generation LED steady-state simulator is designed to prove the stability, reliability and performance of all PV technologies, including Perovskite and Tandem.
Its exceptional stability, uniformity, and spectral match, align perfectly with the highest industry standards. With precise temperature control and adjustable irradiance features, you can effortlessly tailor the testing environment to your specific needs. Additionally, our simulator offers a wide and tunable spectrum, perfect for tandem matching, granting you unparalleled flexibility in your research and experimentation.
The system has garnered immense recognition and trust among leading research and quality control labs. Successfully installed in prestigious facilities worldwide, it stands as the go-to choice for top-tier researchers and manufacturers.
What sets this product apart
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A+A+A+ Flash and steady state
Accurate performance and long term stability measurements
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Wide and adjustable spectrum
300-1200nm spectral range and tandem matching capability
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15°C - 85°C temperature control range
A temperature chamber can be added
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Test every module size
From mini to very large modules
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Modular desing
Test multiple mini cells/modules simultaneously
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Selected by leading RnD labs and manufacturers
80 systems ordered, >40 systems delivered and installed

Unlock the Potential of Perovskite and Tandem PV Module Technologies
Discover the future of PV with Perovskite and tandem PV module technologies. While these groundbreaking technologies show immense promise, their reliability and stability are critical factors that need to be addressed. At Eternal Sun, we offer customized PV module testing tools that are designed to prove the reliability of these innovative technologies, setting a new standard for performance and efficiency.
Do you want to learn more? Contact us!
Eternalsun Spire is a leading manufacturer of solar simulators for measuring the performance and reliability of all PV module technologies.