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Aromatic compounds as substitutes for 2-propanol as texturing additive in aqueous alkaline solutions

: Mayer, K.; Orellana Pérez, T.; Rostas, M.; Schumann, M.; Granek, F.; Glunz, S.W.; Rosenfeld, E.; Kray, D.; Antoniadis, H.

Volltext urn:nbn:de:0011-n-1567603 (275 KByte PDF)
MD5 Fingerprint: f4874b0f7415b2d6fda5c52fd60eb827
Erstellt am: 3.8.2012

European Commission:
25th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2010. Proceedings : 5th World Conference on Photovoltaic Energy Conversion, 6-10 , September 2010, Valencia, Spain
München: WIP-Renewable Energies, 2010
ISBN: 3-936338-26-4
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <25, 2010, Valencia>
World Conference on Photovoltaic Energy Conversion <5, 2010, Valencia>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
Solarzellen - Entwicklung und Charakterisierung; Silicium-Photovoltaik; Oberflächen: Konditionierung; Passivierung; Lichteinfang; Produktionsanlagen und Prozessentwicklung

Two aromatic organic substances, a micelles-forming agent, an aromatic acid, and a complex-forming agent, an aromatic alcohol, were tested on 50 mm x 50 mm Cz-Si-wafers as texturing agents for mono-crystalline silicon solar cells according to the weighted reflectance of the processed surfaces and the etch-rates of the texturing-solutions in dependence of their composition. The results were compared with those of the standard organic texturing agent 2-propanol (iso-propanol, IPA). It could be shown, that the aromatic acid can compete with IPA as texturing additive while etching solutions based on the aromatic alcohol were less successful. After that the system containing the aromatic acid was tested on large number of 125 mm x 125 mm Cz-Si-wafers in an industrial pilot production line of Innovalight Inc., where even better results were reached in shorter time-scales in comparison with the standard texturing process.