Dr. Stephen Maldonado, assistant professor of chemistry and applied physics at the University of Michigan-Ann Arbor, will speak on “New Frontiers in Semiconductor Electrochemistry: Electrochemical Liquid-Liquid-Solid Crystal Growth” at 3 p.m. Friday, Nov. 15, in Room G-3 Schrenk Hall. Refreshments will be provided from 2:30 to 3 p.  m. The seminar is sponsored by the local section of the American Chemical Society. The abstract of Maldonado’s seminar is given below. More information about Maldonado is available online. For further information regarding Maldonado’s visit contact Jakub Koza.

Abstract:

“This presentation will highlight recent work by our research group on the design and synthesis of high aspect ratio semiconductors as nanomaterials in electrochemical energy conversion systems. A general and brief overview/motivation for nanostructured semiconductor electrodes in energy conversion applications will first be given. The remaining time will be dedicated to our recent discovery of a bench top electrode position method to produce crystalline nanostructured semiconductor films. We describe the process as an electrochemically gated melt crystal growth, referred to as an electrochemical liquid-liquid-solid (ec-LLS) process. Data will be presented on the ec-LLS crystal growth of group IV and III-V semiconductors. Results from experiments aimed at identifying the controlling features of the ec-LLS process will be presented.”