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Femtosecond laser pulses for photovoltaic bottom-up strategies

  • A promising technology in photovoltaics is based on micro-concentrator solar cells, where the photovoltaic active area is realized as an array of sub-millimeter sized cells onto which the incident light is focused via microlenses. This approach allows to increase the cell efficiency and to realize much more compact modules compared to macroscopic concentrator devices. At the same time, expensive raw materials can be saved, which is of interest, for example, with respect to indium in the case of copper-indium-gallium-diselenide (CIGSe) thin film solar cells. Two methods to produce micro-sized precursors of CIGSe absorbers on molybdenum are presented using 30-fs laser pulses at 790 nm wavelength. On the one hand, a multi pulse surface structuring of the molybdenum film or the underlying glass substrate and a subsequent physical vapor deposition were used for a site-selective aggregation of indium droplets. On the other hand, a single pulse laser-induced forward transfer was utilized toA promising technology in photovoltaics is based on micro-concentrator solar cells, where the photovoltaic active area is realized as an array of sub-millimeter sized cells onto which the incident light is focused via microlenses. This approach allows to increase the cell efficiency and to realize much more compact modules compared to macroscopic concentrator devices. At the same time, expensive raw materials can be saved, which is of interest, for example, with respect to indium in the case of copper-indium-gallium-diselenide (CIGSe) thin film solar cells. Two methods to produce micro-sized precursors of CIGSe absorbers on molybdenum are presented using 30-fs laser pulses at 790 nm wavelength. On the one hand, a multi pulse surface structuring of the molybdenum film or the underlying glass substrate and a subsequent physical vapor deposition were used for a site-selective aggregation of indium droplets. On the other hand, a single pulse laser-induced forward transfer was utilized to selectively deposit combined copper-indium precursor pixels on the molybdenum back contact of the solar cell. Post-processing (selenization, isolation, contacting) of the laser-generated micro-sized precursors results in functional CIGSe solar cells.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Stefan Andree, B. Heidmann, F. Ringleb, K. Eylers, Jörn Bonse, T. Boeck, M. Schmid, Jörg Krüger
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Tagungsband zur 10. Mittweidaer Lasertagung
Jahr der Erstveröffentlichung:2017
Organisationseinheit der BAM:6 Materialschutz und Oberflächentechnik
6 Materialschutz und Oberflächentechnik / 6.4 Technologien mit Nanowerkstoffen
Herausgeber (Institution):Hochschule Mittweida
Verlag:Hochschule Mittweida
Verlagsort:Mittweida
Jahrgang/Band:2
Erste Seite:1
Letzte Seite:4
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Copper indium gallium diselenide (CIGSe); Femtosecond laser; Laser ablation; Laser-induced forward transfer (LIFT); Micro solar cell
Themenfelder/Aktivitätsfelder der BAM:Energie
Veranstaltung:10. Mittweidaer Lasertagung
Veranstaltungsort:Mittweida, Germany
Beginndatum der Veranstaltung:16.11.2017
Enddatum der Veranstaltung:17.11.2017
ISSN:1437-7624
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.11.2017
Referierte Publikation:Nein