Effect of Pressing on Luminescence Spectra of Fumed Silica
- Authors: Kozlov V.A.1, Kutovoi S.A.2, Mislavskii V.V.3, Pestovskii N.V.1, Petrov A.A.1, Rodionov A.A.1, Savinov S.Y.1, Tskhai S.N.1, Zagumennyi A.I.2, Zavartsev Y.D.2, Zavertyaev M.V.1
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Affiliations:
- Lebedev Physical Institute, Russian Academy of Sciences
- Prokhorov Institute of General Physics, Russian Academy of Sciences
- Moscow Institute of Physics and Technology (State University)
- Issue: Vol 40, No 1 (2019)
- Pages: 42-47
- Section: Article
- URL: https://journals.rcsi.science/1071-2836/article/view/248610
- DOI: https://doi.org/10.1007/s10946-019-09767-7
- ID: 248610
Cite item
Abstract
We study the effect of pressing at a pressure of 1.6 MPa on the photoluminescence (PL) and pulsed cathodoluminescence (PCL) spectra of high-purity fumed silica powder at room temperature and in ambient air. PL is excited by laser radiation at 193 nm, and PCL is excited by electron beam with particle energies of 100–300 keV. Luminescence spectra of fumed silica are changed substantially after pressing. The relative intensity with respect to the luminescence intensity at 300 nm of both PL and PCL in the range 300–450 nm increase after pressing, while the relative intensity of both PL and PCL in the range 260–290 nm decrease. The pressing-sensitive luminescence band in the range 300–450 nm may be related to the defect composed of two facing surface sylilenes. The band in the range 260–290 nm is related to the other surface-related emitting center.
Keywords
About the authors
V. A. Kozlov
Lebedev Physical Institute, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
S. A. Kutovoi
Prokhorov Institute of General Physics, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Vavilov Street 38, Moscow, 119991
V. V. Mislavskii
Moscow Institute of Physics and Technology (State University)
Email: pestovsky@phystech.edu
Russian Federation, Institutskiy per. 9, Dolgoprudny, Moscow, Region, 141700
N. V. Pestovskii
Lebedev Physical Institute, Russian Academy of Sciences
Author for correspondence.
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
A. A. Petrov
Lebedev Physical Institute, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
A. A. Rodionov
Lebedev Physical Institute, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
S. Yu. Savinov
Lebedev Physical Institute, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
S. N. Tskhai
Lebedev Physical Institute, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
A. I. Zagumennyi
Prokhorov Institute of General Physics, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Vavilov Street 38, Moscow, 119991
Yu. D. Zavartsev
Prokhorov Institute of General Physics, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Vavilov Street 38, Moscow, 119991
M. V. Zavertyaev
Lebedev Physical Institute, Russian Academy of Sciences
Email: pestovsky@phystech.edu
Russian Federation, Leninskii Prospect 53, Moscow, 119991
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