Inhomogeneous nanostructured honeycomb optical media for enhanced cathodo- and under-x-ray luminescence / Gaponenko N. V.,Kortov V. S.,Rudenko M. V.,Pustovarov V. A.,Zvonarev S. V.,Slesarev A. I.,Molchan I. S.,Thompson G. E.,Khoroshko L. S.,Prislopskii S. Ya. // JOURNAL OF APPLIED PHYSICS. - 2012. - V. 111, l. 10.

ISSN/EISSN:

0021-8979 / нет данных

Type:

Article

Abstract:

Photo-, radio-, and pulse cathodoluminescence spectra from sol-gel derived titania, doped with strontium and terbium, deposited on porous anodic alumina (PAA) films are reported. The morphology and qualitative elemental depth distributions have been examined by transmission electron microscopy, scanning electron microscopy, and radio-frequency glow discharge optical emission spectroscopy. PAA films with pore and cell sizes ranging from 170 to 190 and 240 to 270 nm, respectively, have been generated on aluminum and monocrystalline silicon substrates followed by spin-on sol-gel derived coating with the subsequent thermal treatment. The resultant PAA surface is not coated with a continuous xerogel film; the xerogel is mainly distributed near the pore bases, leaving much of the pore volume unfilled. The xerogel/PAA structures reveal terbium-related luminescence under x-ray excitation and cathodoluminescence. The same xerogels generated on monocrystalline silicon revealed no cathode- or under-x-ray luminescence. Thus, PAA enhances strongly the cathode- and under x-ray luminescence from terbium and strontium-doped titania xerogels confined in the porous matrix. The fabricated structures are considered as a type of low-cost, thin-film convertor of x-rays, and cathode ray irradiation into visible light, with an average cell size of the convertor of about 250 nm. (C) 2012 American Institute of Physics. {[}http://dx.doi.org/10.1063/1.4717740]

Author keywords:

POROUS ANODIC ALUMINA; FILMS; PHOTOLUMINESCENCE

DOI:

10.1063/1.4717740

Web of Science ID:

ISI:000305363700014

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY 15
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
Article-Number	103101
Keywords-Plus	POROUS ANODIC ALUMINA; FILMS; PHOTOLUMINESCENCE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	igor.molchan@manchester.ac.uk
ORCID-Numbers	Khoroshko, Liudmila/0000-0002-5732-5987
Number-of-Cited-References	20
Usage-Count-Since-2013	16
Journal-ISO	J. Appl. Phys.
Doc-Delivery-Number	960BT