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Reynard JM, Van Gorder NS, Bright FV. Origin of Analyte-Induced Porous Silicon Photoluminescence Quenching. Appl Spectrosc. 2017;71(9):2136-2145doi: 10.1177/0003702817696092.
Reynard, J. M., Van Gorder, N. S., & Bright, F. V. (2017). Origin of Analyte-Induced Porous Silicon Photoluminescence Quenching. Applied spectroscopy, 71(9), 2136-2145. https://doi.org/10.1177/0003702817696092
Reynard, Justin M, et al. "Origin of Analyte-Induced Porous Silicon Photoluminescence Quenching." Applied spectroscopy vol. 71,9 (2017): 2136-2145. doi: https://doi.org/10.1177/0003702817696092
Reynard JM, Van Gorder NS, Bright FV. Origin of Analyte-Induced Porous Silicon Photoluminescence Quenching. Appl Spectrosc. 2017 Sep;71(9):2136-2145. doi: 10.1177/0003702817696092. Epub 2017 Mar 20. PMID: 28862036.
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Appl Spectrosc. 2017 Sep;71(9):2136-2145. doi: 10.1177/0003702817696092. Epub 2017 Mar 20.

Origin of Analyte-Induced Porous Silicon Photoluminescence Quenching.

Applied spectroscopy

Justin M Reynard, Nathan S Van Gorder, Frank V Bright

Affiliations

  1. 1 Department of Chemistry, Erie Community College, Williamsville, NY, USA.
  2. 2 Department of Chemistry, Natural Sciences Complex, SUNY-Buffalo, Buffalo, NY, USA.

PMID: 28862036 DOI: 10.1177/0003702817696092

Abstract

We report on gaseous analyte-induced photoluminescence (PL) quenching of porous silicon, as-prepared (ap-pSi) and oxidized (ox-pSi). By using steady-state and emission wavelength-dependent time-resolved intensity luminescence measurements in concert with a global analysis scheme, we find that the analyte-induced quenching is best described by a three-component static quenching model. In the model, there are blue, green, and red emitters (associated with the nanocrystallite core and surface trap states) that each exhibit unique analyte-emitter association constants and these association constants are a consequence of differences in the pSi surface chemistries.

Keywords: Porous silicon; Stern–Volmer quenching; acetone; decay associated spectra; global analysis; photoluminescence; static quenching

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