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Enhancement of Power Output From a Large-Area Luminescent Solar Concentrator With 4.8× Concentration via Solar Cell Current Matching [in press]

Wilson, Lindsay R.; Klampaftis, Efthymios; Richards, Bryce S.

Abstract (englisch):
The irradiance concentrated along the edges of a planar
luminescent solar concentrator (LSC) is not uniform across
their length. This geometrical effect results in a deviation of up
to 40% between the extreme ends and the middle of an edge for
a large-area LSC. Consequently, the typically in-series interconnected solar cells attached to the edges of the LSC are not illuminated equally resulting to current mismatch. It is shown that by
reducing the lengths of the more central solar cells so that current
matching is achieved, more cells can be attached to each edge. This way, the voltage and power output of the string can be increased. In this work, a 60 cm × 60 cm × 0.3 cm LSC with 26 solar cells mounted to its edges was constructed and characterized. These dimensions result in geometrical concentration of 50×, while the LSC exhibited average irradiance concentration of 4.8×. An increase of 15% in power output and efficiency is demonstrated via the reduction of the length of central cells, current matching, and the consequent connection of one more cell to the string of an edge. Asolar-to-electric power conversion efficiency of ... mehr

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1109/JPHOTOV.2017.2668606
ISSN: 2156-3381, 2156-3403
KITopen ID: 1000068614
HGF-Programm 43.23.04; LK 01
Erschienen in IEEE journal of photovoltaics
Seiten 1–8
Schlagworte Current matching, fluorescence, luminescent solar concentrator (LSC), Lumogen Red, photovoltaics (PVs), polymethyl methacrylate (PMMA)
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