FDTD modeling of solar energy absorption in silicon branched nanowires

Christin Lundgren, Rene Lopez, Joan Marie Redwing, Kathleen Melde

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Abstract

Thin film nanostructured photovoltaic cells are increasing in efficiency and decreasing the cost of solar energy. FDTD modeling of branched nanowire 'forests' are shown to have improved optical absorption in the visible and near-IR spectra over nanowire arrays alone, with a factor of 5 enhancement available at 1000 nm. Alternate BNW tree configurations are presented, achieving a maximum absorption of over 95% at 500 nm.

Original languageEnglish (US)
JournalOptics Express
Volume21
Issue numberSUPPL.3
DOIs
Publication statusPublished - 2013

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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