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Condensed Matter Colloquium Thursday, February 23, 2012

Summary: Condensed Matter Colloquium
Thursday, February 23, 2012
2 pm, Room 1201
Refreshments at 1:30 pm in Room 1305F
Matt Doty
Dept. of Materials Science & Engineering
University of Delaware
Quantum Dot Molecules:
Designing, building and understanding nanostructured
semiconductors for optoelectronic applications
Quantum Dots are nanometer-sized semiconductors in which electrons are
strongly confined by potential barriers. Because the confinement leads to
discrete energy states analogous to the energy levels of natural atoms (s, p, d,
etc.), quantum dots are often described as artificial atoms. Coupled pairs of
quantum dots are similarly described as artificial molecules due to the formation
of delocalized molecular states. In this talk I will discuss our work to understand
the properties of quantum dot molecules using optical spectroscopy
measurements of single molecules and ultrafast optical measurements of carrier
dynamics. I will then discuss how we use our understanding of these novel
nanostructures to design and engineer new molecules with specific and tunable


Source: Appelbaum, Ian - Department of Physics, University of Maryland at College Park


Collections: Engineering; Materials Science