Selective chemical etching for studying the front side contact in thick film screen printed crystalline P-Type silicon solar cells
Author
dc.contributor.author
Ferrada, P.
Author
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Portillo, C.
Author
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Cabrera, E.
Author
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Kopecek, R.
Author
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Poncebustos, M.
Author
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Kogan Bocian, Marcelo
Author
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Campo, V. del
Author
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Fuentealba, E.
Admission date
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2018-12-20T15:13:08Z
Available date
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2018-12-20T15:13:08Z
Publication date
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2015
Cita de ítem
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Journal of the Chilean Chemical Society, Volumen 60, Issue 2, 2018, Pages 2905-2910
Identifier
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07179707
Identifier
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07179324
Identifier
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10.4067/S0717-97072015000200009
Identifier
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https://repositorio.uchile.cl/handle/2250/158521
Abstract
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Crystalline silicon solar cells are currently the leading technology in the photovoltaic market with no great expectable change in the shares. The scientific community works on the further development and improvements of state-of-the-art as well as new solar cell materials. This paper reports on a chemical methodology for selective etching to study the metallization step in monocrystalline silicon solar cells. The object of study is a complete processed silicon solar cell which was cleaved via laser beam on the back side and broken per hand to obtain stripes of the size 15.6×1 cm2. In the following a sequence of etching chemical solutions to selectively remove the components of the front side silver contact was applied. Scanning electron microscopy was used to investigate contact interface after each etching step. The silver finger, the glass and the silver crystallites grown in silicon could be removed. It came out that the silver crystallites preferably grow at the pyramid tips and e