Light-modulated lock-in thermography for photosensitive pn-structures and solar cells
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Lock-in thermography (LIT) is a well-established tool for defect analysis of solar cells, but so far has been restricted to the measurement of metallized samples. The new light-modulated lock-in thermography (LimoLIT) described in this paper overcomes this restriction by generating the voltage modulation needed for detection from photovoltaic conversion of modulated light. Thus wafers can be measured during all stages of fabrication, a pn-junction provided. The contactless LimoLIT method shows a stronger measurement signal and invokes a current flow close to illuminated operating conditions of solar cells, whereas conventional LIT is only comparable to a dark I–V measurement.
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KAES, Martin, Sven SEREN, Thomas PERNAU, Giso HAHN, 2004. Light-modulated lock-in thermography for photosensitive pn-structures and solar cells. In: Progress in Photovoltaics : Research and Applications. 2004, 12(5), pp. 355-363. ISSN 1062-7995. eISSN 1099-159X. Available under: doi: 10.1002/pip.555BibTex
@article{Kaes2004Light-31215, year={2004}, doi={10.1002/pip.555}, title={Light-modulated lock-in thermography for photosensitive pn-structures and solar cells}, number={5}, volume={12}, issn={1062-7995}, journal={Progress in Photovoltaics : Research and Applications}, pages={355--363}, author={Kaes, Martin and Seren, Sven and Pernau, Thomas and Hahn, Giso} }
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