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Accurate Solar Cell Classification for Mass Production
J. Abe, H. Kojima
c-Si, Manufacturing and Processing, Qualification and Testing, Solar Cell, Electrical Properties
Subtopic: Standardisation as Tool for Innovation and Cost Reduction
Event: 28th European Photovoltaic Solar Energy Conference and Exhibition
Session: 4AV.6.47
3510 - 3512
ISBN: 3-936338-33-7
Paper DOI: 10.4229/28thEUPVSEC2013-4AV.6.47
0,00 EUR
Document(s): paper, poster


For mass production of solar cells, two types of test systems have been widely used: continuous types and flash types. Each type has its own benefits and drawbacks, but the both have proven their measurement consistency in actual c-Si cell production lines. The continuous type uses a xenon short-arc lamp, and in order to stabilize the light, mid-range or high-end systems are normally equipped with a highly stable power supply (bipolar type) and a light feedback mechanism. The flash type uses a xenon long-arc lamp, and due to its difficulty of stabilizing the light, this type uses a reference cell to adjust its measurement. Technically, these are two very different approaches. This paper describes a test system, a kind of mixture of these two approaches; the system uses a xenon long-arc lamp in a pulsed mode, but very tightly controls the light, even more tightly than the high-end continuous type. The IV measuring unit used for the test system is also our original design and perfectly matched to the light source. The test results in this paper show the system can make very accurate measurements. In addition, our IV measuring unit can be used for high-efficiency cell and module measurement without major alterations as described in the other paper listed in REFERENCES