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Plasmon-enhanced absorption, often considered as a promising solution for efficient light trapping in thin film silicon solar cells, suffers from pronounced optical losses i.e. parasitic absorption, which do not contribute to the obtainable photocurrent. Direct measurements of such losses are therefore essential to optimize the design of plasmonic nanostructures and supporting layers. Importantly, contributions of useful and parasitic absorption cannot be measured separately with commonly used optical spectrophotometry. In this study we apply a novel strategy consisting in a combination of photocurrent and photothermal spectroscopic techniques to experimentally quantify the trade-off between useful and parasitic absorption of light in thin hydrogenated microcrystalline silicon (μc-Si:H) films incorporating self-assembled silver nanoparticle arrays located at their rear side. The highly sensitive photothermal technique …
International Society for Optics and Photonics
Publication date: 
17 Sep 2018

Seweryn Morawiec, Jakub Holovský, Manuel J Mendes, Martin Müller, Kristína Ganzerová, Aliaksei Vetushka, Martin Ledinský, Francesco Priolo, Antonín Fejfar, Isodiana Crupi

Biblio References: 
Volume: 10722 Pages: 107221M
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI