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W. S. Liang, Klaus J. Weber and Y. L. Ren Impact of laterally non-uniform carrier lifetime on photoconductance-based lifetime measurements with self-consistent calibration Progress in Photovoltaics: Research and Applications 21

Article first published online: 21 JUN 2012 | DOI: 10.1002/pip.2248

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The impact of lateral nonuniform carrier lifetime on the determination of the lifetime from photoconductance-based measurements, based on the self-consistent method, is investigated. It is shown that the method can result in an overestimation of the mean lifetime, with the magnitude of the error mainly dependent on the distribution of the effective lifetime across the area sensed by the photoconductance coil. The error can be eliminated through independent measurement of the sample optical properties. Experimental measurements confirm the model predictions.

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