Concepts of localized contacts and junctions through surface passivation layers are already advantageously applied in Si wafer-based photovoltaic technologies. For Cu(In,Ga)Se2 thin film solar cells, such concepts are generally not applied, especially at the heterojunction, because of the lack of a simple method yielding features with the required size and distribution. Here we show a novel, innovative surface nanopatterning approach to form homogeneously distributed nanostructures (<30 nm) on the facetted, rough surface of polycrystalline chalcogenide thin films. The method, based on selective dissolution of self-assembled and well-defined alkali condensates in water, opens up new research opportunities towards development of thin film solar cells with enhanced efficiency.

Alkali-templated surface nanopatterning of chalcogenide thin films: A novel approach toward solar cells with enhanced efficiency / Reinhard, Patrick; Bissig, Benjamin; Pianezzi, Fabian; Hagendorfer, Harald; Sozzi, Giovanna; Menozzi, Roberto; Gretener, Christina; Nishiwaki, Shiro; Buecheler, Stephan; Tiwari, Ayodhya N.. - In: NANO LETTERS. - ISSN 1530-6984. - 15:5(2015), pp. 3334-3340. [10.1021/acs.nanolett.5b00584]

Alkali-templated surface nanopatterning of chalcogenide thin films: A novel approach toward solar cells with enhanced efficiency

SOZZI, Giovanna;MENOZZI, Roberto;
2015

Abstract

Concepts of localized contacts and junctions through surface passivation layers are already advantageously applied in Si wafer-based photovoltaic technologies. For Cu(In,Ga)Se2 thin film solar cells, such concepts are generally not applied, especially at the heterojunction, because of the lack of a simple method yielding features with the required size and distribution. Here we show a novel, innovative surface nanopatterning approach to form homogeneously distributed nanostructures (<30 nm) on the facetted, rough surface of polycrystalline chalcogenide thin films. The method, based on selective dissolution of self-assembled and well-defined alkali condensates in water, opens up new research opportunities towards development of thin film solar cells with enhanced efficiency.
Alkali-templated surface nanopatterning of chalcogenide thin films: A novel approach toward solar cells with enhanced efficiency / Reinhard, Patrick; Bissig, Benjamin; Pianezzi, Fabian; Hagendorfer, Harald; Sozzi, Giovanna; Menozzi, Roberto; Gretener, Christina; Nishiwaki, Shiro; Buecheler, Stephan; Tiwari, Ayodhya N.. - In: NANO LETTERS. - ISSN 1530-6984. - 15:5(2015), pp. 3334-3340. [10.1021/acs.nanolett.5b00584]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2795951
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