MBJ Solutions promoted its MBJ Sunlike Lab and MBJ Mini Sunlike Lab tools for lab-scale PV module characterization at Intersolar
The company also showcased its latest Steady Sun Simulator for industrial-scale IV and EL measurement
For on-site PV module quality check-up, MBJ’s vehicle-mounted MBJ Mobile Lab is developed for IV and EL, while the handheld MBJ Quickcheck can take EL images of installed PV modules
Germany-based PV cell and module characterization tool maker MBJ Solutions GmbH promoted its latest range at Intersolar Europe 2026, with a focus on high-efficiency cell technologies, including PERC, HJT, TOPCon, and perovskite-silicon tandem.
The company pitched its MBJ Sunlike Lab and MBJ Mini Sunlike Lab to validate and quantify the performance and production feasibility of a new cell technology-based module.
MBJ Sunlike Lab, with an area of 1,400 × 2,400 mm, is equipped with 32 LED light sources that are independently controllable and continuously cooled for pulse-type or long-duration measurement. The cooling is accomplished by an integrated climate chamber with a rated temperature range of 15-75°C. By adjusting the real-time light intensity of individual channels, the tool can deliver a spectral range that matches natural UV, visible, and IR sunlight, with spectral coverage (SPC) exceeding 99.8%. This translates into a configurable irradiance range of 100 to 1,200 W/m².
On the spectrum quality side, the company claimed that its spectrum exhibits spatial inconsistency of less than ±0.5% across the testing area. For long-duration measurements, it can maintain the spectral intensity within ±0.5%, a condition known as LTI. Together, these spectral qualities result in repeated power label measurement error rate of less than 0.05%. According to the company, users can choose between flash-pulse mode with a duration of up to 500 ms and continuous light for steady-state operation.
This tool also combines an electroluminescence (EL) tester with 18 CMOS cameras, each equipped with an automatic filter selection unit. This enables the acquisition of both top- and bottom-cell images in tandem architecture, with a cycle time (image acquisition time) of 5 seconds, the company claimed.
MBJ Mini Sunlike Lab, with 22 LED light sources, is designed to characterize small PV modules measuring within 500 × 500 mm. Its rated spectral coverage of natural sunlight is up to100%, covering an irradiance range of 200 to 1,300 W/m². With a maximum power measurement repeatability of ±0.2%, its rated short-pulse duration is 500 ms, and steady-state operation is also possible.
The company unveiled its latest Steady Sun Simulator for short-duration mass production and steady-state measurements across a range of use cases. This is also equipped with LED-based light sources to mimic natural sunlight and an EL tester for quality checking of cells, strings, and modules.
For on-site PV module health checkups, the company displayed its vehicle-mounted MBJ Mobile Lab, which features an integrated sun simulator and EL tester. This tool can measure the IV and EL of a wide PV array much faster and at a lower cost than conventional practices, claims the company.
Also on display was a man-portable handheld PV module EL characterization tool, MBJ Quickcheck. A user can acquire an EL image of an individual PV module under sunlight, unlike in normal night-time EL measurement practices. The company noted that it is the fastest way to get a PV module health checkup.
