Porous silicon photoluminescence in the presence of gaseous analytes
Reynard, Justin M.
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The overarching goal of this 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 thesis discusses the response mechanism and the factors that underlie the observed analyte-dependent PL response. The thesis then reports progress towards developing an apparatus capable of rapidly and reproducibly screening pSi PL analyte response, which is then used to study the thermodynamics for pSi PL upon interacting with several analytes (e.g., methanol, ethanol, 1-propanol, toluene, nitromethane, acetone, and ethyl acetate).