Avalon ST’s Advanced LED-Based PV Module Characterization Tool

During this year’s Intersolar Europe exhibition in Munich, Avalon ST, a Neuchâtel, Switzerland-based LED sun-simulator maker, promoted its upgraded Nexun Pro Max and Nexun Mobile Lab sun-simulators.  

Nexun Pro Max  

This characterization tool, equipped with the proprietary Nexun technology-based LED light source, operates within a wide spectral range, covering the Sun's spectrum from ultraviolet (UV) to infrared (IR) wavelengths. The light source emits long pulses ranging from 20 ms to 500 ms, covering light irradiances between 100 W/m² and 1,300 W/m², enabling the characterization of new cell technologies such as HJT, PERC, perovskite, TOPCon, or thin-film in a single flash, emphasized the company. The company also claimed that the tool provides maximum power (Pmax) measurement repeatability of less than ±0.05%.  

Beyond quality measurement, the Nexun Pro Max offers a short cycle time, resulting in high throughput. This can also be attributed to the LED light source’s lifespan of more than 30 million flashes, minimizing the downtime generally associated with Xenon lamp replacement and lengthy uniformity adjustment, added Avalon ST. The PV characterization tool maker also offers an optional dual light-source version for bifacial module characterization. Regarding other functionalities, it features EQE and Dark IV, along with on-demand integration of an electroluminescence (EL) imaging system, an additional steady-state light source for light soaking (perovskites), as well as a thermal chamber. The company is ready to take orders for this characterization tool. 

Nexun Mobile Lab  

Avalon ST also promoted its TÜV Rheinland-verified Nexun technology-based Mobile Lab, a platform designed for on-site PV module characterizations, including IV measurement, electroluminescence (EL) imaging, and bypass diode checks. Its IV measurement is powered by an A++A+A++ rated Nexun-based solar simulator.