Combined luminescence and X-ray emission study of self-trapped excitons in oxides / Ivanov V.,Kikas A.,Kaeaembre T.,Kirm M.,Kuusik I.,Pustovarov V. // . - 2010. - V. 15, l. .

ISSN/EISSN:
1757-8981 / нет данных
Type:
Proceedings Paper
Abstract:
The experimental study of relaxation of anion and cation excitons at the selective VUV-(valence) and soft X-ray (inner-shell) excitations for binary BeO crystal and multicomponent oxide crystals Be2SiO4, Al2Be3Si6O18 and Y2SiO5 is presented. Results show that the relaxation during the time-scale of decay of short-living anion and cation excitations leads to creation of self-trapped excitons at the corresponding low-symmetry (tetrahedral) local structural units of crystalline lattice. This can be caused by increase of dynamical instability of such a local structural units (in comparison with high symmetry ones), which facilitates self-trapping processes in these systems.
Author keywords:
INNER-SHELL EXCITATION; ELECTRONIC EXCITATIONS; INTRINSIC LUMINESCENCE; 1S EDGE; CRYSTALS; BE2SIO4; BEO
DOI:
10.1088/1757-899X/15/1/012088
Web of Science ID:
ISI:000315348600088
Соавторы в МНС:
Другие поля
Поле Значение
Booktitle 11TH EUROPHYSICAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS (EURODIM 2010)
Series IOP Conference Series-Materials Science and Engineering
Note 11th Europhysical Conference on Defects in Insulating Materials (EURODIM), Univ Pecs, Inst Phys, Pecs, HUNGARY, JUL 12-16, 2010
Organization Res Inst Solid State Phys \& Opt
Publisher IOP PUBLISHING LTD
Address DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Language English
Article-Number 012088
Keywords-Plus INNER-SHELL EXCITATION; ELECTRONIC EXCITATIONS; INTRINSIC LUMINESCENCE; 1S EDGE; CRYSTALS; BE2SIO4; BEO
Research-Areas Materials Science
Web-of-Science-Categories Materials Science, Multidisciplinary
Author-Email ivy@dpt.ustu.ru
ResearcherID-Numbers Kaambre, Tanel/K-3980-2014 Kikas, Arvo/H-3136-2015
ORCID-Numbers Kaambre, Tanel/0000-0003-1453-4663
Funding-Acknowledgement Estonian Science Foundation {[}ETF7615]; NATO {[}983489]; Russian Priority National Project `` Education{''} ( innovation educational program of the Yeltsin Ural Federal University); European Comission {[}20072013, 226716, 20080019]; HASYLAB {[}20080019]
Funding-Text This work has been partially supported by the Estonian Science Foundation grant ETF7615, the NATO grant CBP. EAP. CLG 983489 and the Russian Priority National Project `` Education{''} ( innovation educational program of the Yeltsin Ural Federal University). Synchrotron radiation studies in HASYLAB and MAX- Lab were supported by the European Comission ( Grant FP7/ 20072013, grant 226716, grant 20080019) and the HASYLAB Project II- 20080019.
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