SAND IN THE LABORATORY. PRODUCTION AND INTERROGATION OF GAS PHASE SILICATES.

Kokkin, Damian L

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https://hdl.handle.net/2142/79362 Copy

Description

Title

SAND IN THE LABORATORY. PRODUCTION AND INTERROGATION OF GAS PHASE SILICATES.

Author(s)

Kokkin, Damian L

Contributor(s)

Steimle, Timothy

Issue Date

26-Jun-15

Keyword(s)

Small molecules

Abstract

Given its technological importance, the literature abounds with models for plasma enhanced chemical vapor deposition of the SiH$_4$/O$_2$/Ar system. In a continuing effort to identify and characterize the optical spectra of Si$_3$ generated in a SiH$_4$/Ar pulsed discharge sourcefootnote{The electronic spectrum of Si$_3$ I: the triplet D$_{3h}$ system� Reilly, N. J.; Kokkin, D. L.; Zhuang, X.; Gupta, V.; Nagarajan, R.; Fortenberry, R. C.; Maier, J. P.; Steimle, T. C.; Stanton, J. F.; McCarthy, M. C., J. Chem. Phys. 136(19), 194307, 2012.}, we detected, via two dimensional (2D) LIF, a relatively strong electronic transition in the 570-600,nm region that is strongly enhanced by the addition of a small amount of O$_2$. The excitation spectrum shows resolved band structure at the pulsed laser resolution of 0.5,cm$^{-1}$ and exhibits a radiative lifetime of 1.97,$mu$s. The dispersed fluorescence exhibits three vibrational progressions and an unusually small splitting of approximately 50,cm$^{-1}$. Here we report on efforts to identify the molecular carrier of these bands, with particular interest paid to species resulting from oxygen impurities in the silane discharge.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

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http://hdl.handle.net/2142/79362

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