MEMS Seminar: "Exciton-Plasmon Interactions in Thin Films and Metasurfaces"
In thin-film organic optoelectronic devices, manipulation of light below the diffraction limit in a two-dimensional plane is important for efficient light utilization within the semiconductor active layer. Two dimensional plasmonic surfaces are promising materials for this purpose because of their thinness and their ability to localize the electric field of light at their surface. In this talk, our work on improving light trapping and light extraction in organic semiconductor thin films using plasmonic surfaces will be presented. Optical phenomena, such as absorption induced scattering, out-of-plane waveguiding and morphology-dependent surface plasmon outcoupling, are identified due to exciton-plasmon coupling between the organic semiconductor and the metasurface. Interactions between localized and propagating surface plasmon polaritons and the excitonic transitions of a variety of organic and organometallic materials will be discussed and ways in which these interactions may be optimized for particular thin-film optoelectronic applications will be presented.
Deirdre O'Carroll is an associate professor of materials science and engineering at Rutgers University. She holds a PhD in microelectrical engineering and a bachelor's degree in engineering from the University College Cork in Ireland.
Lunch will be served at 11:30 am.
Hosted by Dr. Christine Payne