Breakthrough: Avalon ST achieves Xenon-like spectrum with LEDs technology for large area PV solar simulator

Avalon ST has achieved Xenon-like continuous spectrum from 300 to 1200nm using a patented LED technology technology on a compact table type A+A+A+ simulator at a cost comparable to Xenon based systems.

For years now, several companies have manufactured LED solar simulators with varying degrees of success. One of the big issues is the spiky spectrum generated by usually 8-12 types LEDs on those systems, and whilst it matches the binning class of the IEC60904-9 to A+, the spectral mismatch can be significant.

Another issue is the lack of stable power LEDs over 1000nm, usually, those simulators have weak emission over 1’000nm or degrade quickly.

Avalon’s Nexun solar simulator uses 31 LED types over the range of 300 to 1’000nm and a patented source to cover 1'000-1’200nm, which allows an adjustable, stable a continuous spectrum in the likes of Xenon based systems.

AM1.5, Xenon state of the art and Nexun spectrum

LEDs have significant advantages over Xenon. A more stable and adjustable spectrum, long pulse, it offers measurement capabilities that were previously impossible with Xenon and is particularly suited for the measurement of market rising technologies like PERC and HJT.

The Nexun systems control each LED color independently with an in-house-designed high precision analog driver, which allows very fine-tuning of the spectrum, uniformity and also ensuring stability higher than most LED or Xenon system, on a compact and affordable system.

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