OPV is one of the most promising future technologies in the PV industry.[more]
I-V Curve Tracer for Thinfilm Solar Modules prior to Lamination
The Dr. Schenk I-V Curve tracer measures the I-V curves of thin-film modules before lamination. The fully automated system is based on a proprietary LED illumination technology which enables an evaluation of the electrical characteristics of the entire thin-film panel, as well as the detection of local variations. It enables uniquely electrical characterization by:
- Space-Resolved Measurement
- Wavelength-Resolved Measurement
- Irradiance-Resolved Measurement
- System Design of Dr. Schenk's I-V Curve Tracer
Unlike conventional flasher-tests, this measurement can be performed in-line before the lamination step and can, thus, serve as a GO/NO-GO tester to decide whether a panel is further processed. The I-V curve tracer can also be used as an off-line tool.
By correlating the measurement results of the I-V Curve Tracer with data from preceding indirect optical measurements (e.g. local defects, layer thickness, haze etc.), this innovative solution serves as a valuable process control tool for the previous production steps.
The system features a three quadrant four point measurement for optimized determination of the serial and parallel resistance as well as an I-V measurement in forward direction without light. The system comes fully automated with handling and a flexible, mechanical contacting mechanism to be integrated into a production line or to be used offline as a stand-alone tool.
Next to the 2D display of I-V curves per measurement point, the analysis software offers intuitive 3D charts - cell by cell or for a cell row.
Features at a Glance
- Modular system design
- Adaptable to all substrate sizes and to any number of cells
- Spatial resolution: e.g. 1,760 measurement areas for a PV panel of the size 1100 x 1300 mm
- Three Quadrant Measurement
- Measurement Parameters: Voc, Isc, Pmax, FF, Rserial, Rparallel
- Four Point Measurement Technology
- High-performance LED units - nearly maintenance-free due to long lifetime
- Fully automated system with handling for loading, positioning, unloading
- Mechanical contacting combs
- High durable, easy to exchange probes
- Interfacing via Ethernet or Digital I/O
- GO/NO-GO result via digital I/O (good/bad)
- Detailed measurement analysis with intuitive 3D charts
- Extensive Data Storage functions
