EXOELECTRONIC SPECTROSCOPY OF INTRINSIC AND EXTRINSIC COLOR-CENTERS IN SURFACE-LAYERS OF ALKALI SILICATE-GLASSES / ARBUSOV VI,ZATSEPIN AF,KORTOV VS,TOLSTOI MN,TYUKOV VV // JOURNAL OF NON-CRYSTALLINE SOLIDS. - 1991. - V. 134, l. 3. - P. 208-217.

ISSN/EISSN:

0022-3093 / нет данных

Type:

Article

Abstract:

The possibilities of exoelectronic spectroscopy method for investigation of the nature of color centers (CCs) and electronic processes connected with them in surface layers of alkali silicate glasses of high purity were demonstrated. It was shown that the localized electronic states of matrix together with the extrinsic Fe2+ ions were the main electron donors. It was determined that the energetic parameters of emission-active centers are closely analogous to those of bulk CCs. The necessary stages of photo- and thermally stimulated exoemission mechanism are the trapping of electron on intrinsic localized states in the vicinity of the bottom of the conduction band, thermo-ionization of the relaxed state of forming centers and electron yield into vacuum. The process of Fe2+ tunnel ionization dominates at quantum energies of hBAR-omega less-than-or-equal-to 5.0 eV in the formation stage of photoemission from unstable centers.

Author keywords:

QUARTZ

DOI:

10.1016/0022-3093(91)90378-J

Web of Science ID:

ISI:A1991GL10800004

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	QUARTZ
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Ceramics; Materials Science, Multidisciplinary
ResearcherID-Numbers	Zatsepin, Anatoly/L-7335-2016
ORCID-Numbers	Zatsepin, Anatoly/0000-0001-9539-2403
Number-of-Cited-References	34
Journal-ISO	J. Non-Cryst. Solids
Doc-Delivery-Number	GL108