X-ray emission and photoluminescence spectroscopy of nanostructured silica with implanted copper ions / Zatsepin D. A.,Kortov V. S.,Kurmaev E. Z.,Gavrilov N. V.,Wilks R. G.,Moewes A. // PHYSICS OF THE SOLID STATE. - 2008. - V. 50, l. 12. - P. 2322-2326.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

Quartz glass samples and compacted SiO(2) nanopowders have been studied by x-ray emission (CuL (2, 3) transition 3d4s -> 2p (1/2, 3/2)) and photoluminescence spectroscopy following pulsed Cu(+) ion implantation (energy, 30 keV; pulse current up to 0.5 A; pulse duration, 400 mu s; irradiation doses, 10(15), 10(16), and 2 x 10(17) cm(-2)). It has been established that ion irradiation gives rise to the formation of glassy and compacted SiO(2) samples of nanosized metallic and oxide phases in the structure. An analysis of CuL x-ray emission spectra has shown that copper nanoparticles are thermodynamically metastable and chemically active because ion beam bombardment transfers them readily to the oxide form. This results from the radiation-stimulated fracture of regular Si-O-Si bonds in amorphous SiO(2) and the formation of defective Si-Si bonds, followed by capture of oxygen by copper atoms. The enhanced degree of oxidation of copper ions in SiO(2) nanostructured pellets can be reduced by coimplantation and thermal annealing. Optical spectroscopy studies suggest that, in glasses and SiO(2) nanostructured pellets, there exist metallic Cu(n) (0) nanoclusters, which at low temperatures exhibit quantum-confined photoluminescence with a characteristic stepped excitation spectrum.

Author keywords:

SPECTRA

DOI:

10.1134/S1063783408120172

Web of Science ID:

ISI:000261763600017

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	SPECTRA
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	d\_zatsepin@ifmlrs.uran.ru
ResearcherID-Numbers	Kurmaev, Ernst/J-4254-2013 Zatsepin, Dmitry/F-5520-2012
ORCID-Numbers	Kurmaev, Ernst/0000-0003-4625-4930 Gavrilov, Nikolai/0000-0003-1542-0107
Funding-Acknowledgement	Russian Academy of Sciences {[}01.2.006 13395]; Federal Agency on Education {[}2948]; Russian Foundation {[}08-02-01072, 08-02-00148]; Russian Federation {[}NSh1929.2008.2]; Natural Sciences and Engineering Research Council of Canada (NSERC); Canada Research Chair Program
Funding-Text	The present study was carried out within the program of the Russian Academy of Sciences (project no. 01.2.006 13395) under support of the Federal Agency on Education (grant no. 2948) and the Russian Foundation for Basic Research (grant nos. 08-02-01072 and 08-02-00148), as well as of the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (grant no. NSh1929.2008.2). The authors acknowledge support of the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Canada Research Chair Program.
Number-of-Cited-References	14
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	9
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	384SD