Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
We observed that gold and silver nanoparticles located at the interface between TiO2 and an organic charge transport material (spiro-OMeTAD) generate sustainable photocurrents upon excitation of the particles’ localized surface plasmon resonance. The photocurrent response closely follows the plasmonic absorption characteristics of the nanoparticles. We introduce a simple method for the electrostatic self-assembly of metal nanoparticles allowing for the controlled creation of dense nanoparticle monolayers with well-defined interparticle separations. Absorbed photon-to-electron conversion efficiencies of up to 15% were observed with these metal nanoparticle sensitized flat heterojunctions. In the second part of this talk we will briefly describe a study of energy transfer phenomena between metal nanoparticles and surface-confined organic chromophores in a colloidal model system. This energy transfer potentially enables the use of metal nanoparticles as ‘light harvesting antennas’ in photovoltaic devices. We study the distance and wavelength dependence of fluorescence quenching via steady state and time-resolved fluorescence spectroscopy using Au@SiO2 core-shell nanoparticles.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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