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oai:ubir.buffalo.edu:10477/799452025-09-18T01:41:58Zcom_10477_77914col_10477_79804

Porous Silicon Analyte-Dependent Photoluminescence Response Impacted by Nanocrystal Size and Local Environment & Investigating Laser Illumination and Chemical Vapor Effects on Single- and Few-Layer WS2 Matthews, Samantha Bright, Frank Chemistry analytical chemistry Ph.D. This dissertation is divided into two parts and both utilize spectroscopic techniques to characterize materials. First, the relationship between the analyte-induced photoluminescence (PL) response and silicon nanocrystallite size, size distribution, and amorphous silicon (a-Si) contribution across a pSi specimen is discussed. The second part covers the characterization of single- and few-layer WS2 (i) in the presence of analyte vapor and (ii) subjected to extended periods of 50, 10, and 1 W/cm2 laser power densities (LPD). **To request an accessible version of the file(s) associated with this item, contact library@buffalo.edu. Please include the item's persistent URL [http://hdl.handle.net/. . .] in your request.** 2019-07-30T15:11:18Z 2019-07-30T15:11:18Z 2019 2019-05-15 12:06:52 Text Dissertation http://hdl.handle.net/10477/79945 eng Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions. Copyright retained by author. application/pdf State University of New York at Buffalo