Memòria gràfica de la Biblioteca '07

Postprint (published version)

Selective ablation of photovoltaic materials with UV laser sources for monolithic interconnection of devices based on a-Si:H

Lasers are essential tools for cell isolation and monolithic interconnection in thin-film-silicon photovoltaic technologies. Laser ablation of transparent conductive oxides (TCOs), amorphous silicon structures and back contact removal are standard processes in industry for monolithic device interconnection. However, material ablation with minimum debris and small heat affected zone is one of the main difficulty is to achieve, to reduce costs and to improve device efficiency. In this paper we present recent results in laser ablation of photovoltaic materials using excimer and UV wavelengths of diode-pumped solid-state (DPSS) laser sources. We discuss results concerning UV ablation of different TCO and thin-film silicon (a-Si:H and nc-Si:H), focussing our study on ablation threshold measurements and process-quality assessment using advanced optical microscopy techniques. In that way we show the advantages of using UV wavelengths for minimizing the characteristic material thermal affection of laser irradiation in the ns regime at higher wavelengths. Additionally we include preliminary results of selective ablation of film on film structures irradiating from the film side (direct writing configuration) including the problem of selective ablation of ZnO films on a-Si:H layers. In that way we demonstrate the potential use of UV wavelengths of fully commercial laser sources as an alternative to standard backscribing process in device fabrication.

Memòria 2012 Biblioteca EPSEB

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Memòria 2011 Biblioteca EPSEB

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Memòria 2010 Biblioteca EPSEB

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Memòria 2009 Biblioteca EPSEB

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Memòria 2008 Biblioteca EPSEB

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Memòria 2003-2007 Biblioteca EPSEB

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Biblioteca de l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona. Memòria 2013

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Biblioteca de l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona. Memòria 2012

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Biblioteca de l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona. Memòria 2011

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Biblioteca de l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona. Memòria 2010

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Biblioteca de l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona. Memòria 2009

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Memòria 2011 : Biblioteca de l’Escola Universitàriad’Enginyeria Tècnica Industrial de Barcelona

Postprint (published version)

Biblioteca de l'Escola Tècnica Superior d'Arquitectura de Barcelona: Informe d'actuacions 2011

Actuacions dutes a terme a la Biblioteca ETSAB durant l'any 2011: Instal•lacions; Tecnologia; Col•leccions; Bibliotècnica; Serveis bibliotecaris; Habilitats informacionals; Coneixement UPC; Accés a la cultura; Professionals; Organització i gestió.