One-Sun Solar Cell TesterThe Spi-Cell Tester™ tests the electrical performance of photovoltaic cells under simulated sunlight. A xenon arc lamp with an optical filter provides a close match to the Air Mass 1.5 Global (AM1.5G) solar spectrum.The Spi-Cell Tester measures current-voltage (I-V) characteristics of cells with dimensions up to 156 mm x 156 mm at 1 sun intensity. Its high resolution also permits testing of very small area devices. Separate current and voltage probes on the top and bottom of the cell permit four-point (Kelvin) I-V measurements. A calibrated monitor cell is located on the test plane to monitor the light intensity.A computer with user friendly software adjusts the lamp intensity, controls the measurement process, and acquires cell performance data. A programmable electronic load varies the resistance across the cell to measure its I-V characteristics. The computer plots the I-V curve and displays a variety of cell characteristics. Curves and data can be printed and stored on disk.

 

Features and Benefits

Measures and displays the following cell parameters:Complete I-V curveOpen circuit voltage, VocShort-circuit current, IscCell temperature, °CPeak power, PmaxCell efficiency, η- Fill factor, FFSeries resistance, RsShunt resistance, RshIllumination uniformity within ±2% at 1 sunXenon light source filtered to Class A spectrum (AM1.5G) for intensities from 70 to 110 mW/cm²Calibrated reference cell traceable to NRELFour point probe for accurate measurementsTemperature controlLED vacuum chuck using a closed loop water chillerComputer system and software package for operation, measurements, data analysis, printed output, and disk storage