Emitter saturation current densities determined by self-consistent calibration: Impact of laterally non-uniform lifetime distribution on calibration accuracy

Wensheng Liang*, Klaus J. Weber, Daniel Walter, Tom Ratcliff

*Corresponding author for this work

    Research output: Contribution to journalConference articlepeer-review

    1 Citation (Scopus)

    Abstract

    The impact of laterally non-uniform carrier lifetime on the determination of the emitter saturation current(Joe) from photoconductance-based measurements, based on the self-consistent method proposed by Trupke and Bardos, is investigated using a model assuming two adjacent regions with considerably difference Joe. It is shown that the method can result in an underestimation of the mean Joe if the distribution of the J oe across the sensed area is not uniform. From simulation it is verified that the error can be eliminated through independent measurement of the sample optical properties. The self-consistent calibration mechanism is also studied by the model. Experimental measurements confirm the model predictions.

    Original languageEnglish
    Pages (from-to)114-123
    Number of pages10
    JournalEnergy Procedia
    Volume38
    DOIs
    Publication statusPublished - 2013
    Event3rd International Conference on Crystalline Silicon Photovoltaics, SiliconPV 2013 - Hamelin, Germany
    Duration: 25 Mar 201327 Mar 2013

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