Abstract

Ultra high-speed characterization of crystalline quality in non-passivated multicrystalline Si wafers and ingots was demonstrated by photoluminescence (PL) imaging with the samples immersed in a HF solution. We confirmed that the present technique has about ten times higher spatial resolution and ten thousand times faster rapidity than those of conventional electrical characterization methods, and that strong correlations of the results between the present and conventional techniques were obtained. These results show clearly that the present technique is a powerful tool for characterizing the accurate bulk property of non-passivated wafers and ingots.

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