Synthesis of CaY2-x Ln (x) Ge3O10 (Ln = Eu or Tb) phosphors via the EDTA complexing process / Lipina Olga A.,Surat Ludmila L.,Tyutyunnik Alexander P.,Belova Ksenia G.,Zubkov Vladimir G. // JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY. - 2015. - V. 74, l. 2. - P. 550-556.

ISSN/EISSN:

0928-0707 / 1573-4846

Type:

Article; Proceedings Paper

Abstract:

The CaY2-x Ln (x) Ge3O10 (Ln = Eu or Tb) phosphors have been synthesized via an ethylenediaminetetraacetic acid complexing process. Simultaneous thermal analysis has been used to study thermal decomposition of the precursor. X-ray powder diffraction measurements indicate that the well crystallized single-phase solid solutions (S.G. P2(1)/c, Z = 4) can be obtained at temperatures above 1,000 A degrees C. According to scanning electron microscopy data, the final products consist of dense particles with the average size of < 1 mu m. The emission spectra of the Eu3+-doped samples contain several intense peaks corresponding to the characteristic transitions from the excited D-5(0) level to the F-7 (J) (J = 0-4) levels. For Tb3+-doped germanates, the D-5(3) -> F-7 (J) and D-5(4) -> F-7 (J) (J = 3-6) transitions have been observed. The intensity ratio between emissions from D-5(3) and D-5(4) levels varies significantly with the activator content due to cross relaxation. The highest intensity of luminescence has been observed for the compounds annealed at 1,100 A degrees C.

Author keywords:

Rare-earth germanates; Phosphors; Simultaneous thermal analysis; X-ray powder diffraction; Scanning electron microscopy; Infrared spectroscopy RARE-EARTH IONS; CRYSTAL-STRUCTURE; LUMINESCENCE PROPERTIES; THULIUM PYROGERMANATE; STIMULATED-EMISSION; VIBRATIONAL-SPECTRA; SINGLE-CRYSTALS; LOW-TEMPERATURE; LANTHANIDE; ABSORPTION

DOI:

10.1007/s10971-015-3635-2

Web of Science ID:

ISI:000353472900033

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAY
Note	International Conference on Solid State Physics (ICSSP), Univ Punjab, Lahore, PAKISTAN, DEC 01-06, 2013
Organization	Ctr Excellence Solid State Phys; Biotroll Pvt Ltd; Dawn Sci; Sanco; Bana Int; Comp Engn Serv
Publisher	SPRINGER
Address	VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Language	English
EISSN	1573-4846
Keywords-Plus	RARE-EARTH IONS; CRYSTAL-STRUCTURE; LUMINESCENCE PROPERTIES; THULIUM PYROGERMANATE; STIMULATED-EMISSION; VIBRATIONAL-SPECTRA; SINGLE-CRYSTALS; LOW-TEMPERATURE; LANTHANIDE; ABSORPTION
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Ceramics
Author-Email	LipinaOlgaA@yandex.ru
ResearcherID-Numbers	Tyutyunnik, Alexander/P-2230-2015
Funding-Acknowledgement	Russian Foundation for Basic Research {[}13-03-00047a]
Funding-Text	This work was supported by Russian Foundation for Basic Research (Grant No. 13-03-00047a). The structural studies were carried out at the multiple-access center for X-ray structure analysis at the Institute of Solid State Chemistry, UB RAS (Ekaterinburg, Russia).
Number-of-Cited-References	43
Usage-Count-Since-2013	8
Journal-ISO	J. Sol-Gel Sci. Technol.
Doc-Delivery-Number	CG7HF