TY - JOUR A1 - Ringleb, F. A1 - Andree, Stefan A1 - Heidmann, B. A1 - Bonse, Jörn A1 - Eylers, K. A1 - Ernst, O. A1 - Boeck, T. A1 - Schmid, M. A1 - Krüger, Jörg T1 - Femtosecond laser-assisted fabrication of chalcopyrite micro-concentrator photovoltaics T2 - Beilstein journal of nanotechnology N2 - Micro-concentrator solar cells offer an attractive way to further enhance the efficiency of planar-cell technologies while saving absorber material. Here, two laser-based bottom-up processes for the fabrication of regular arrays of CuInSe2 and Cu(In,Ga)Se2 microabsorber islands are presented, namely one approach based on nucleation and one based on laser-induced forward transfer. Additionally, a procedure for processing these microabsorbers to functioning micro solar cells connected in parallel is demonstrated. The resulting cells show up to 2.9% efficiency and a significant efficiency enhancement under concentrated Illumination. PB - Beilstein-Institut zur Förderung der Chemischen Wissenschaften CY - Frankfurt, M. KW - Chalcopyrite KW - Femtosecond laser patterning KW - Laser-induced forward transfer KW - Micro-concentrator solar cell KW - Photovoltaics PY - 2018 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/47002 AN - OPUS4-47002 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-470026 SN - 2190-4286 VL - 9 SP - 3025 EP - 3038 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany