Effective medium analysis of plasmonic silver nanoparticle films

Conference paper (2011)

Authors

R. Santbergen Photovoltaic Materials and Devices -

J. Sap External organisation

TL Temple Photovoltaic Materials and Devices -

S. Solntsev Photovoltaic Materials and Devices -

Arno H.M. Smets Photovoltaic Materials and Devices -

A.H.M. Smets Photovoltaic Materials and Devices -

R.A.C.M.M. van Swaaij Photovoltaic Materials and Devices -

M. Zeman Photovoltaic Materials and Devices -

Research Group

Photovoltaic Materials and Devices () (TU Delft)

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Published Date

2011

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

Photovoltaic Materials and Devices

Abstract

Films of silver nanoparticles have optical properties that are useful for applications such as plasmonic light trapping in solar cells. We illustrate experimentally and by means of simulations how the particle shape affects the optical properties. In addition we show that these nanoparticle films can be represented by an effective medium layer with an almost identical reflectance and transmittance. The Bergman effective medium theory that we used provides a link between the nanoparticle shape and the optical properties. This insight can be used for the optical analysis of nanoparticle films and for further optimization of plasmonic solar cells.