Journal
OPTICS EXPRESS
Volume 25, Issue 12, Pages A502-A514Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.00A502
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Funding
- Helmholtz Association via Helmholtz Young Investigator Group of U. Paetzold
- Helmholtz Association via Helmholtz Postdoc Program
- Helmholtz Association via Professorial Recruitment Initiative
- Helmholtz Association via Helmholtz program Science and Technology of Nanosystems (STN)
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Solution processable nanocrystal solar cells combine the advantages of low-cost printing and wide range of accessible absorber materials, however high trap densities limit performance and layer thickness. In this work we develop a versatile route to realize the infiltration of a photonic crystal, with copper indium diselenide nanocrystal ink. The photonic crystal allows to couple incident light into pseudo-guided modes and thereby enhanced light absorption. For the presented design, we are able to identify individual guided modes, explain the underlying physics, and obtain a perfect match between the measured and simulated absorption peaks. For our relatively low refractive index layers, a 7% maximum integrated absorption enhancement is demonstrated. (C) 2017 Optical Society of America
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