Low-Cost High-Sensitive Suns– $V_{\text{oc}}$ Measurement Instrument to Characterize c-Si Solar Cells
IEEE Transactions on Instrumentation and Measurement(2020)
摘要
Measuring open-circuit voltage (V
oc
) versus light intensity (Suns) in solar cells permits the access of cell performance without the series resistance effect. This article shows the implementation of a Suns-Voc measurement system that consists of an off-the-shelf photograph flash lamp, a digital oscilloscope, and a specifically designed photodetector board with three silicon photodiodes that covers a light intensity measurement range from 10
-5
to 10
2
suns. The whole system is controlled via universal serial bus (USB) ports from a personal computer allowing the measurement of cell characteristics (pseudo-dark and pseudo-light current density-voltage curves, as well as the pseudo fill factor and pseudo efficiency) automatically in a very short time.
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关键词
Crystalline silicon (c-Si),flash lamp,pseudo fill factor,series resistance,solar cells,Suns–Voc method
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