Influence of nanoparticle shape on colloidal plasmonic interface properties

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, Türkiye

Tezin Onay Tarihi: 2014

Öğrenci: ELİF SARIGÜL

Danışman: ALPAN BEK

Özet:

Nanoparticles bearing free charges, interact very strongly with incoming electromagnetic radiation at certain frequencies called the plasmon resonance frequencies, depending on the size, shape and material properties of the particle and the medium. In order to enhance the light scattering by a two dimensional network of such plasmonic nanoparticles several strategies can be followed. In this thesis, it was pursued the fabrication and characterization of the nanoparticle decorated surfaces by colloidal solution based technique as a self-organized random production method. Optical and spectral electrical properties of plasmonic interfaces were investigated for nanosphere, nanowire and nanobipyramid particles to find out the most efficient geometry. It was also discussed the feasibility of the application of metal nanoparticles to solar cell devices.