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Production of precursors for micro-concentrator solar cells using femtosecond Laser-Induced Forward Transfer

  • Indium is a constituent of copper-indium-gallium-diselenide (CIGSe), which is an excellent absorber material for highly-efficient thin film solar cells but a rare element. A micro-concentrator solar cell design can achieve indium saving along with increased solar cell conversion efficiency. In such a solar cell architecture the CIGSe material is arranged in micrometer sized islands in contrast to the deposition of a thin layer used in standard cells. In this paper, the production of spatially arranged precursor islands consisting mainly of indium using laser-induced forward transfer (LIFT) is presented. The donor is a glass substrate (150 µm thick) coated with layers of copper (20-150 nm) and indium (200-1000 nm). The receiver is an 800 nm thick molybdenum film on glass intended as back contact for CIGSe solar cells. Islands of the donor material are successfully transferred via LIFT by employing 30-fs laser pulses with 800 nm wavelength and 60 µm focal spot diameter. The spacingIndium is a constituent of copper-indium-gallium-diselenide (CIGSe), which is an excellent absorber material for highly-efficient thin film solar cells but a rare element. A micro-concentrator solar cell design can achieve indium saving along with increased solar cell conversion efficiency. In such a solar cell architecture the CIGSe material is arranged in micrometer sized islands in contrast to the deposition of a thin layer used in standard cells. In this paper, the production of spatially arranged precursor islands consisting mainly of indium using laser-induced forward transfer (LIFT) is presented. The donor is a glass substrate (150 µm thick) coated with layers of copper (20-150 nm) and indium (200-1000 nm). The receiver is an 800 nm thick molybdenum film on glass intended as back contact for CIGSe solar cells. Islands of the donor material are successfully transferred via LIFT by employing 30-fs laser pulses with 800 nm wavelength and 60 µm focal spot diameter. The spacing between donor and receiver is fixed at 150 µm and the material transfer is performed by a single pulse for each precursor island. The transferred material is characterized by scanning electron and optical microscopy, profilometry and energy dispersive X-ray analyses. Matrices of copper-indium precursors can be transferred in a spatial arrangement adapted to the geometry of micro lens arrays needed for micro-concentrator solar cells.zeige mehrzeige weniger

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Metadaten
Autor*innen:Stefan Andree
Koautor*innen:B. Heidmann, F. Ringleb, K. Eylers, Jörn Bonse, T. Boeck, M. Schmid, Jörg Krüger
Dokumenttyp:Posterpräsentation
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2017
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Copper indium gallium diselenide (CIGSe); Femtosecond laser; Indium; Laser-induced forward transfer (LIFT); Micro-concentrator solar cell
Veranstaltung:European Materials Research Society (EMRS) Spring Meeting 2017, Symposium X “New frontiers in laser interaction: from hard coatings to smart materials”
Veranstaltungsort:Strasbourg, France
Beginndatum der Veranstaltung:22.05.2017
Enddatum der Veranstaltung:26.05.2017
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:31.05.2017
Referierte Publikation:Nein
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