Regensburg 2016 – scientific programme
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DS: Fachverband Dünne Schichten
DS 12: Postersession DS
DS 12.28: Poster
Monday, March 7, 2016, 17:00–19:00, Poster A
Using direct laser writing for photonic crystal structures in nanocrystal solar cells — •Stephan Dottermusch1, Aina Quintilla2, Guillaume Gomard2, and Bryce Richards1,2 — 1Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT), Karlsruhe, Deutschland — 2Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT), Karlsruhe, Deutschland
In recent years light trapping in thin-film solar cells using photonic crystal (PC) based structures has found an increasing interest. Many different types of textures and structures have been proposed. Whereas the fabrication of 1D and 2D PCs has been shown using conventional top-down etching methods or bottom-up self-assembly methods, 3D PCs are rarely seen do to a lack of fabrication techniques. Direct laser writing (DLW) is an emerging technology with the capacity of 3D structuring polymers on a sub-micrometer scale. In this work, PCs were created using DLW and infiltrated with CIS nanocrystals. Light trapping in these structures was investigated using simulations, and observed by measuring the absorption spectrum. Absorption peaks were identified by comparing the spectrum of a flat reference layer.