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.…
Autor*innen: | Stefan Andree, B. Heidmann, F. Ringleb, K. Eylers, Jörn BonseORCiD, T. Boeck, M. Schmid, Jörg KrügerORCiD |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Tagungsband zur 10. Mittweidaer Lasertagung |
Jahr der Erstveröffentlichung: | 2017 |
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 |
Veranstaltung: | 10. Mittweidaer Lasertagung |
Veranstaltungsort: | Mittweida, Germany |
Beginndatum der Veranstaltung: | 16.11.2017 |
Enddatum der Veranstaltung: | 17.11.2017 |
ISSN: | 1437-7624 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.11.2017 |
Referierte Publikation: | Nein |