Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6535500 | Solar Energy Materials and Solar Cells | 2014 | 5 Pages |
Abstract
Photoluminescence (PL) imaging over a large area (4.5Ã4.5Â cm2) is demonstrated on polycrystalline silicon thin films and solar cells on glass. PL imaging is a well-established technique for characterisation of silicon wafers and wafer-based solar cells, however its application to crystalline silicon thin films on glass was not possible due to low material quality and volume, and IR noise from the glass substrate. This paper reports methods to overcome these limitations, the design of a thin-film silicon PL imaging system, examples of PL images of silicon films at different processing stages and preliminary findings. It is demonstrated that the observed PL images qualitatively correlate with the silicon film crystal grain structure and quality.
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Authors
Anthony Teal, Jonathon Dore, Sergey Varlamov,