Pulsed cathodoluminescence and vibrational structure of localized electronic states in alkali silicate glasses / Zatsepin DA,Zatsepin AF,Solomonov VI,Cholakh SO // GLASS PHYSICS AND CHEMISTRY. - 2004. - V. 30, l. 5. - P. 400-405.

ISSN/EISSN:

1087-6596 / нет данных

Type:

Article

Abstract:

The cathodoluminescence of localized electronic states (L intrinsic centers) in glasses of the composition (mol \%) 22Me(2)O (.) 3CaO (.) 75SiO(2) and Me2O (.) 3SiO(2) (Me = Li, Na, K) is investigated upon excitation with a pulsed electron beam (180 keV, 700 A/cm(2) 2 ns). The luminescence spectra recorded in a pulsed periodic mode contain bands of L centers of two types whose occurrence reflects the formation of fragments with different degrees of atomic ordering in the microstructure of glasses. The line spectra with separations between the lines v(0) = 820 cm(-1) and v(1) = 520-640 cm(-1) are measured in a single-pulse mode. The effect revealed is attributed to the manifestation of the vibronic interactions during radiative relaxation of the triplet state of L centers. It is demonstrated that, according to the mechanism of cathodoluminescence, electronic excitations interact with local vibrations of nonbridging oxygen atoms and phonon modes of the glass network. The corresponding interactions are classified as vibronic (v(0)) and electron-phonon (v(1)) interactions.

Author keywords:

EV LUMINESCENCE BAND; SURFACE-LAYERS

DOI:

10.1023/B:GPAC.0000045919.3084

Web of Science ID:

ISI:000225214600005

Соавторы в МНС:

Другие поля

Поле	Значение
Month	SEP-OCT
Publisher	MAIK NAUKA/INTERPERIODICA
Address	C/O KLUWER ACADEMIC-PLENUM PUBLISHERS, 233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	EV LUMINESCENCE BAND; SURFACE-LAYERS
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Ceramics
ResearcherID-Numbers	Zatsepin, Anatoly/L-7335-2016 Zatsepin, Dmitry/F-5520-2012 Cholakh, Seif/M-8221-2016
ORCID-Numbers	Zatsepin, Anatoly/0000-0001-9539-2403 Cholakh, Seif/0000-0002-9313-6614
Number-of-Cited-References	21
Usage-Count-Since-2013	2
Journal-ISO	Glass Phys. Chem.
Doc-Delivery-Number	872NT