Photosensitive defects in silica layers implanted with germanium ions / Zatsepin A. F.,Fitting H. -J.,Kortov V. S.,Pustovarov V. A.,Schmidt B.,Buntov E. A. // JOURNAL OF NON-CRYSTALLINE SOLIDS. - 2009. - V. 355, l. 1. - P. 61-67.

ISSN/EISSN:

0022-3093 / нет данных

Type:

Article

Abstract:

Ge-implanted silica layers have been investigated by high-power pulsed synchrotron-photoluminescence (PL), photoluminescence excitation spectroscopy (PLE), and optically stimulated electron emission (OSEE) with respect to association of excitation and absorption bands to respective emission bands and lifetimes of excited defect states. In this way singlet-singlet (4.35 eV) and triplet-singlet (3.18 eV) radiative transitions from excited states of oxygen-deficient centers (ODC) in Ge-doped silica glass are characterized by their absorption and emission bands as well as their lifetimes. The main channel for non-radiative relaxation of photoexcitation is electron emission by the OSEE effect. The OSEE shows non-radiative transitions of surface E'(s) and bulk E'-centers found with concentrations of (2.7-3.4) x 10(12) cm(-2) and (2-4) x 10(16) cm(-3), respectively. (C) 2008 Elsevier B.V. All rights reserved.

Author keywords:

Synchrotron radiation; Radiation effects; Defects; Optical properties; Absorption; Luminescence; Optical spectroscopy; Photoinduced effects; Time resolved measurements; Oxide glasses; Silica; Structur SIO2 LAYERS; ELECTRON-EMISSION; ABSORPTION-BANDS; EXCITED-STATES; E'-CENTERS; OXYGEN; GE; CATHODOLUMINESCENCE; DIOXIDE; SI+

DOI:

10.1016/j.jnoncrysol.2008.08.0

Web of Science ID:

ISI:000263006800012

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	SIO2 LAYERS; ELECTRON-EMISSION; ABSORPTION-BANDS; EXCITED-STATES; E'-CENTERS; OXYGEN; GE; CATHODOLUMINESCENCE; DIOXIDE; SI+
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Ceramics; Materials Science, Multidisciplinary
Author-Email	hans-joachim.fitting@uni-rostock.de
ResearcherID-Numbers	Buntov, Evgeny/F-8760-2010 Zatsepin, Anatoly/L-7335-2016
ORCID-Numbers	Buntov, Evgeny/0000-0003-3255-9039 Zatsepin, Anatoly/0000-0001-9539-2403
Funding-Acknowledgement	Russian Education Agency {[}2948]; RFBIZ {[}08-02-00843]; HASYLAB (DESY) {[}11-04-068]
Funding-Text	The support of the Russian Education Agency (Program The development of scientific potential of higher school 2006-2008', Grant No. 2948), RFBIZ (Grant 08-02-00843) and HASYLAB (DESY) (Project 11-04-068) are gratefully acknowledged.
Number-of-Cited-References	24
Usage-Count-Since-2013	8
Journal-ISO	J. Non-Cryst. Solids
Doc-Delivery-Number	402IG