Molecular Foundry Seminar

"Dopants and Charge Carriers in Colloidal II-VI Semiconductor Nanocrystals"

Prof. Daniel R. Gamelin, Department of Chemistry, University of Washington
Tuesday, April 19th at 1:00 pm, Bldg. 67 - 3111

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Abstract:

The deliberate introduction of impurities into semiconductors can be used to control their physical properties, and has been exploited extensively in information processing devices, solar cells, and other semiconductor technologies. This talk will focus on the introduction of open-shell transition metal ions into colloidal II-VI semiconductor nanocrystals, and will emphasize the manipulation of the photophysical properties of quantum dots through dopant-carrier and dopant-exciton exchange interactions. Such exchange interactions underpin many existing and proposed device structures in electroluminescence and spin-based information processing technologies. Basic aspects of doped semiconductor electronic structures will be discussed in this context.