I-V characteristic measuring apparatus and I-V characteristic measuring method for solar cell, and recording medium recorded with program for I-V characteristic measuring apparatus
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United States of America Patent
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Nov 3, 2015
Grant Date -
Dec 4, 2014
app pub date -
Dec 26, 2013
filing date -
Jun 3, 2013
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Abstract
To provide an I-V characteristic measuring apparatus that can, even though a solar simulator of a flash light type is used, accurately measure a true I-V characteristic of a solar cell that exhibits a different I-V characteristic depending on a sweep direction when a sweep time of applied voltage is short, an internal division ratio calculation part that, at each voltage value, calculates an internal division ratio at which a current value of a dark state stationary I-V characteristic internally divides a gap between a current value of a dark state forward I-V characteristic and a current value of a dark state reverse I-V characteristic; and a light state stationary I-V characteristic estimation and calculation part that, on the basis of the internal division ratio, a light state forward I-V characteristic, and a light state reverse I-V characteristic, estimates and calculates a light state stationary I-V characteristic are provided.
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