POROUS SILICON PHOTOLUMINESCENCE IN THE PRESENCE OF GASEOUS ANALYTES
Justin Reynard
June 16, 2015, 10:30 am, NIA, Rm 137
Abstract:
The overarching goal of my research is to develop porous silicon (pSi) sensors for selective analyte detection. Toward this end, my research focused on determining the nature of the analyte-dependent photoluminescence (PL) response from as prepared, hydrogen passivated and oxidized pSi. This presentation reports on my efforts towards developing an apparatus capable of rapidly and reproducibly screening pSi PL analyte response. Further, I will discuss how the system was modified to allow for time-resolved and hyper-spectral PL measurements to be obtained, which were used to study the unique response elicited by nitromethane. Finally, I will present the results from studying the thermodynamics for pSi PL upon interacting with several analytes (e.g., methanol, ethanol, 1-propanol, toluene, nitromethane, acetone, and ethyl acetate).
Bio:
Justin Reynard is a recent graduate from the University at Buffalo, where he earned his Ph.D. in Analytical Chemistry under the guidance of Prof. Frank V. Bright. He has over five years of experience in several spectroscopic techniques, including steady-state and time-resolved luminescence measurements, nanoporous silicon synthesis, and xerogel synthesis. His research has lead to several publications while collaborating with other research groups as well as with his own. In his spare time, he has an interest in computer design. He can be contacted at jreynard@buffalo.edu.