Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published June 2011 | public
Book Section - Chapter

Conformal plasmonic a-Si:H solar cells with non-periodic light trapping patterns


Light trapping via plasmonic nanostructures has emerged as a novel method for guiding and confining light in nanoscale photovoltaics. In our design, the metal nanostructures are built directly into the back contact of an a-Si:H device, such that the large scattering cross section of the plasmonic particles couples incident sunlight into localized and guided modes overlapping with the a-Si:H layer. This enables the use of ultrathin absorbing layers, which are attractive for cost and stability as well as higher open circuit voltages. Here we show that electromagnetic simulation can be used to accurately simulate nanopatterned solar cells, including for randomly textured and non-periodic patterns. We also show that non-periodic arrangements of plasmonic nanostructures are promising for enhancing photocurrent in ultrathin film a-Si:H solar cells.

Additional Information

© 2011 IEEE. We are grateful to Karine van der Werf is for solar cell depositions, and to MiPlaza for electron-beam fabrication of the master pattern. The Caltech portion of this work was supported by the Department of Energy under contract number DE-FG02-07ER46405 (modeling) and SETP GO-18006 (cell fabrication). Work at AMOLF is part of the research program of FOM which is financially supported by NWO. This work is also part of the Global Climate and Energy Project (GCEP).

Additional details

August 19, 2023
October 24, 2023