Surface-Plasmon-Enhanced Organic Thin-Film Solar Cells

Fabrication of two-dimensional metal nanoparticle arrays was achieved both by thermal annealing and nanosphere lithography techniques, which are both very fast and economic. The surface plasmon resonance of the fabricated nanostructure was analyzed experimentally by optical absorption spectroscopy and theoretically by three-dimensional finite-difference time-domain (FDTD) calculation. The surface plasmon resonance frequency of the metal nanos- tructure can be modified to match the solar spectrum by adjusting several processing parameters. These results will provide a database of the surface plasmon resonance of different metal nanoparticle arrays with different sizes and shapes.