<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The migration of elementary electronic excitations was studied in a single crystal of stishovite and compared with migration in a crystal of α-quartz and polycrystalline stishovite powder. The research method is based on comparing the transfer of absorbed energy to luminescence centers, used as detectors of quasiparticles, and the near-surface nonradiative annihilation of electronic excitations. A sign of migration is the appearance of some minima in the photoluminescence (PLE) excitation spectrum in the region of maxima in the intrinsic absorption spectrum. The PLE spectrum of stishovite contains the first minimum at 9.8 eV, indicating the migration of electronic excitations and the existence of an intrinsic absorption band in stishovite at 9.8 eV. In α-quartz, the first minimum in the PLE spectrum is located at 10.5 eV and corresponds well to the intrinsic absorption band of the exciton.</p>
</abstract>

The migration of elementary electronic excitations was studied in a single crystal of stishovite and compared with migration in a crystal of α-quartz and polycrystalline stishovite powder. The research method is based on comparing the transfer of absorbed energy to luminescence centers, used as detectors of quasiparticles, and the near-surface nonradiative annihilation of electronic excitations. A sign of migration is the appearance of some minima in the photoluminescence (PLE) excitation spectrum in the region of maxima in the intrinsic absorption spectrum. The PLE spectrum of stishovite contains the first minimum at 9.8 eV, indicating the migration of electronic excitations and the existence of an intrinsic absorption band in stishovite at 9.8 eV. In α-quartz, the first minimum in the PLE spectrum is located at 10.5 eV and corresponds well to the intrinsic absorption band of the exciton.

Energy Transport in SiO<sub>2</sub> Crystals: Luminescence Excitation Spectra of Stishovite and α-Quartz

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Energy Transport in SiO Crystals: Luminescence Excitation Spectra of Stishovite and α-Quartz

The migration of elementary electronic excitations was studied in a single crystal of stishovite and compared with migration in a crystal of α-quartz and...

Energy Transport in SiO₂ Crystals: Luminescence Excitation Spectra of Stishovite and α-Quartz

Pubblicato online: 17 ago 2022

Pagine: 19 - 24

DOI: https://doi.org/10.2478/lpts-2022-0030

Parole chiave
Electronic excitations migration, photoluminescence excitation, stishovite single crystal

© 2022 A. N. Trukhin, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Energy Transport in SiO2 Crystals: Luminescence Excitation Spectra of Stishovite and α-Quartz

Pubblicato online: 17 ago 2022

Pagine: 19 - 24

DOI: https://doi.org/10.2478/lpts-2022-0030

Parole chiaveElectronic excitations migration, photoluminescence excitation, stishovite single crystal

© 2022 A. N. Trukhin, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Energy Transport in SiO₂ Crystals: Luminescence Excitation Spectra of Stishovite and α-Quartz

Parole chiave
Electronic excitations migration, photoluminescence excitation, stishovite single crystal