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Physical Society Colloquium
Synthesis, Assemblies and Characterization Hans-Jürgen Eisler MIT Chemical synthesis of colloidal semiconductor nanocrystals, also referred as quantum dots, can access high crystal quality in the strong quantum confinement regime. Size distributions as narrow as 5% enable a detailed study of optical, electrical as well as magnetic properties. This research talk will focus on recent results in three major sections. After a short review of the chemical approach in engineering quantum dots core - and quantum dots core/shell architectures, the first focus will be examples of quantum dot hetero-structures and assemblies. The second topic will concentrate on single quantum dot spectroscopy. The third focus will deal with recent results on stimulated emission on self-assembled quantum dot solids. First results of laser action on colloidal semiconductor nanocrystals in microphotonic structures will be given.
Wednesday, February 7th, 2001, 13:30 (Note special time and room) |