Light trapping in ultrathin plasmonic solar cells.

By V. Ferry, M. Verschuuren, H. Li, Ewold Verhagen, Robert Walters, R. Schropp, Harry A. Atwater, A. Polman. Optics Express, 2010

657 citations recorded by the source corpus.

We report on the design, fabrication, and measurement of ultrathin film a-Si:H solar cells with nanostructured plasmonic back contacts, which demonstrate enhanced short circuit current densities compared to cells having flat or randomly textured back contacts. The primary photocurrent enhancement occurs in the spectral range from 550 nm to 800 nm. We use angle-resolved photocurrent spectroscopy to confirm that the enhanced absorption is due to coupling to guided modes supported by the cell. Full-field electromagnetic simulation of the absorption in the active a-Si:H layer agrees well with the experimental results. Furthermore, the nanopatterns were fabricated via an inexpensive, scalable, and precise nanopatterning method. These results should guide design of optimized, non-random nanostructured back reflectors for thin film solar cells.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/18cf9a3cf440f947d4fd1de1be4676ed56bd2855

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Citations in the corpus

• Organic Solar Cells: A Review of Materials, Limitations, and Possibilities for Improvement (2013, positive): “With the aid of this technique, the opportunity for photon absorption can be increased even for ultra-thin layers (Ferry et al. 2010).”