Data and Time |
Oct. 11 , 2011, 4:00-5:00 PM |
Location |
Sanford Flemming Building, Room B560
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Host |
Leon Yuan |
Selectively Transparent and Conducting Photonic Crystals and their
Potential to Enhance the Performance of Thin-Film Silicon-Based
Photovoltaics and Other Optoelectronic Devices
Paul O'Brien
Department of Chemistry and the Edward S. Rogers Sr. Department of Electrical and Computer Engineering (Photonics)
Abstract:
Selectively transparent and conducting photonic crystals (STCPCs) are a
paradigm shift in the field of PCs as they are the first transparent
material to offer the combined properties of tunable spectral reflection and
conductivity comparable to that of sputtered indium-tin oxide. In this talk
I will present one-dimensional silica-nanoparticle based STCPCs, which are
effectively Bragg-stacks, that exhibit broad and intense Bragg reflectance
peaks. Given their exceptional properties, these enhanced STCPCs could
potentially be the next generation platform for integration into and
enhancement of the opto-electronic performance of numerous devices including
lasers, electrochemical, biomedical, and optical telecommunication devices. In
this talk I will discuss the potential benefits of integrating STCPCs as
intermediate reflectors in thin-film silicon-based solar cells, as the
rear-contact in building integrated photovoltaic solar cells panels, and as
anodes that create microcavities in OLED devices in order to narrow
the spectral
line width of their emission.
Biography:
Paul O'Brien is a postdoctoral associate in the department of Chemistry at
the University of Toronto, currently working with Prof. Ozin's and Prof.
Kherani's Group. He just recently completed his Ph.D with the Department of
Materials Science and Engineering at the University of Toronto. He is the
author of numerous publications that appear in journals such as Advanced
Materials, Optics Express and Nano Letters. He is also first author of the
recently published patent "Transparent conductive porous nanocomposites and
methods of fabrication thereof". |
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