Load and Measuring Device for High Efficiency cells

PC controlled load simulation and IV curve measurement for high efficiency solar cells includes 1000 W/m², 500 W/m², Dark Reverse and Dark Forward test. Optimized for higher and longer current flow for high class EL-Imaging-Systems

The PSL HE-EL is optimized for fully automated production lines. It records four complete IV curves at 1000 W/m², 500 W/m², Dark Reverse and Dark Forward in one measurement cycle. Using an external power source up to 15 A at 15 V can be supplied for high class El-Imaging-Systems with automatic evaluation on mono and poly crystalline cells (current flow up to 500 ms). In combination with the PSS 10 HE and the software package HE hysteresis effects during measurements of high efficiency cells are eliminated. Options are available to further enhance functionality for production. A customized ”Plug&Play“ manual test station is also offered.


Product Specification

› Full passive load simulation
› Fully integrated current source for optional
thermal imaging systems
› Fully integrated dark forward and dark reverse measurement
› Fully integrated external current source for
electroluminescence imaging systems
› Eliminates hysteresis effects in slow reacting cells
(e.g. high efficiency cells)
› Serial resistance measurement via two-step irradiance
› 3 synchronously triggered data acquisition channels
with precision A/D converters for I, V and Ref.
› Data acquisition time 20 to 500 ms
› Can be easily integrated into a manufacturing environment
› Password protected setup and calibration
› Connection via a fiber optic converter to a RS232 COM port
› Software package includes classification, binning and handling interface
› Database and data tracking systems according to customer requirements


Technical Data

Mechanical Data

Weight: approximately 4.5kg
Dimensions: 120 x 260 x 330 (H x W x L in mm)

Electrical Data

Voltage: 12 V DC (external mains adaptor 100–240V, 50/60Hz)
Power: 18 W


Measurement range V: 1 V*
Measurement range I: 12 A*
Measurement range Ref.: 80 mV*
A/D Converters: 3x12Bit unipolar
Max. number of measuring points: 512
Accuracy per range: <0.1%
Reverse range V: 15 V
Reverse range I: 12 A

*measuring range can be adjusted to customer request


Fiber optic cable (PFO)
115200 baud, 1 stop bit, no parity


IR-Imager and analyzing software
EL-Imaging and analyzing software