manual / laboratory measurement solutions for solar cells
Without exception, PV industries around the world are closely connected to laboratories. This is hardly surprising since accurate and reliable measurement data are the key to effective R&D and quality control.
Halm offers turnkey systems for measuring solar cells. Their modular system design enables the flexible configuration of multiple additional measurement options such as EL, IR, GR and SR.
Adaptable cell contacting allows contacting of all common cell formats and contact (print) layouts.
The optional "Therm" addon upgrades our cell tester into a fully automatic, temperature-controlled measuring system. Complex measuring programs (measuring matrix on different illumination intensities at different temperature levels) can then be run fully automatically.
All our testers meet the stringent A+A+A+ criteria of the latest IEC60904-9 Ed. 3.0 standard and are designed to produce reliable results 24/7, all year round.
Celltest5
The Celltest5 is a state-of-the-art IV tester designed for high-quality solar cell performance testing in laboratories and R&D environments. This advanced system features a unique LED light source with 28+ wavelengths covering a spectral range of 300-1,200 nm. The system is capable of unlimited flash duration and constant light operation.
For bifacial applications, the Celltest5-BF version features two identical, synchronized LED light sources that allow measurements with illumination on both front and rear side of solar cells.
Both systems meet the demanding requirements of various cell technologies, including tandem and multi-junction solar cells as well as perovskite materials, with adjustable light source spectrum capabilities.
The Celltest5 provides MPP tracking, spectral response and EQE measurement as well as additional advanced analysis tools including multiple series and shunt resistance measurements, advanced hysteresis evaluation, two-diode analysis, and SunsVoc measurements, ensuring reliable and comprehensive performance characterization for next-generation solar cell technologies.
Moreover, these systems are available with optional features such as EL and IR imaging and grid resistance testing.
Celltest4-BF
The BF in Celltest4-BF stands for bifacial, and is a system that enables synchronous illumination of the front and back of the cell, allowing precise determination of its overall performance. This makes a detailed investigation of the cell in different illumination situations possible. The intensities and illumination times of the individual light sources (flasher) can be configured independently. It permits particularly long illumination times (flash durations) and offers a wide range of customizable measurement parameters and advanced analyses for measuring cells.
Advanced software analysis methods such as SunsVoc, 2-diode fit, and doping concentration are optionally available.
Celltest4
Our base model, Celltest4, is a state-of-the-art laboratory cell tester for the PV industry. It features a flexible system layout and a wide range of optional hardware extensions such as EL [electroluminescence] imaging, hotspot (IR) detection and a spectral response measurement option, as well as additional software options. Taken together, these extensions can transform Celltest4 into a fully integrated cell characterization system.
The tester offers a wide range of customizable measurement parameters and advanced analyses to measure cells. It also enables extremely long flash durations, an important factor when examining or measuring modern, high-capacity solar cells. Advanced analytical methods such as SunsVoc, 2-Diode-Fit and doping concentration are also available as a software feature.
The lab tester's cell contacting feature can be configured to accommodate the desired cell type and geometry. Contacting options include conventional pin contacting and advanced contacting layouts for e.g. busbar-less solar cells.
The Celltest4 can also be retrofitted to a Celltest4-BF later, making it a future-proof investment.