Wheland Lecture - John P. Maier: University of Basel

Electronic Spectroscopy of C60+ and its Identification in Interstellar Space

Chemistry

March 27, 2017
Kent 120 | Monday, 4:00 pm

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The Tuesday JFI Seminar - James F. Cahoon, Department of Chemistry, University of North Carolina - Chapel Hill

From Nanowires to Nanoplatelets: Designing Semiconductor Morphology so Form Follows Function

Semiconductors are used in a vast array of modern technologies, including solar cells that convert sunlight into electricity and microprocessors that drive computers. They can be used to direct the flow of energy in devices or to convert energy from one form to another. These functions are enabled by the specific choice of material and composition. Shape, however, is another fundamental characteristic that can be used to encode functionality. Here, I will describe my group’s efforts to usenanometer-scale morphology as a strategy to encode novel photovoltaic, electronic, and optical properties in materials created by bottom-up methods. We chemically synthesize nanostructures, such as metal oxide particles and group IV nanowires, with precise morphology and composition, and we evaluate their physical properties using nanofabrication, spectroscopic, electrochemical, and computational methods. For instance, I will describe a strategy to create silicon nanowires with lithographic-like patterns, enabling applications ranging from photonic crystals to non-volatile memory. In addition, I will outline our efforts to design wide-bandgap photocathode materials for integration in solar fuels devices. The results yield insights into the synthesis, structure-function relationships, and technological applications of designed, bottom-up semiconductor nanomaterials. Host: Bozhi Tian; Contact him at 2-8749 or via email at btian@uchicago.edu. Persons with a disability who may need assistance please contact Brenda Thomas at 2-7156 or by email at bthomas@uchicago.edu.

JFI Tuesday Seminar

March 28, 2017
GCIS W301 | Monday, 4:00 pm

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Yimon Aye, Cornell

Stay On Target: Deconvoluting Mixed Redox Messages through Precision Redox Targeting

Chemistry

March 31, 2017
Kent 120 | Friday, 1:15 pm

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