非晶硅太阳能电池载流子收集长度的自动测量
AUTOMATIC MEASUREMENT OF THE CARRIER COLLECTION LENGTH IN a-Si:H SOLAR CELLS
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摘要: 提出用光生电流偏压关系拟合非晶硅pin太阳能电池光态I-V特性曲线,测量光生载流子收集长度的模型.用计算机自动测量与分析处理系统采样,采用Marquardt数字计算拟合法对实测I-V值进行拟合验证,实验结果证明该模型拟合结果良好.用不同模型对同组数据进行拟合比较,对各模型拟合误差进行了讨论,本文的模型拟合误差较小,参数自动拟合调整较大,数据重复性、可靠性好,能反映实际使用条件下电池的特性.Abstract: A new phenomenological model for fitting the illuminated I-V curves of a-Si:H PIN solar cells is proposed, in which the relation between photocurrent and applied bias voltage is used. The I-V curve of the a-Si:H PIN solar cells were measured and analyzed by IBM personal computer and the Marquardt mathematic method. The experiments show that the fitting results were excellent. The fitting error was less than one of other models and the model parameters could be modified automatically, so that reproduction and reliability of experiment data were good.
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