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Bulk Lifetimes up to 20 ms Measured on Unpassivated Silicon Discs Using Photoluminescence Imaging

Chung, Daniel; Mitchell, Bernhard; Goodarzi, Mohsen; Sun, Ryan; MacDonald, Daniel; Trupke, Thorsten


With high-efficiency silicon solar cells approaching 25% efficiency in mass production, the requirements on the bulk lifetime and its uniformity across the wafer and the ingot increase dramatically. Since some cell architectures require these high lifetimes on starting material, the need arises for characterization methods to measure very high bulk lifetimes that are spatially resolved at an early stage before cell processing. A method based on the spectral ratio of two photoluminescence images...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: IEEE Journal of Photovoltaics
DOI: 10.1109/JPHOTOV.2016.2644984


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