Abstract
This paper presents the results of experimental studies for the luminescence spectral intensity redistribution of opal photonic crystals containing various active dielectrics - Bi12SiO20, opal - Bi2TeO5 and opal - NaBi(MoO4)2 matrix nanocomposites and filled with europium C6H9EuO6 x H2O salt. Ultraviolet excitation was provided by semiconductor laser operating at wavelengths of 400nm and 100 mW average power. An increase in the integral luminescence intensity of the matrix composite opal - Bi12SiO20: Eu3+ was found. The possibility of the participation of bismuth ions as a co-activator and luminescence concentrator also is analyzed. It has been proposed to use opal-Bi12SiO20 nanocomposite filled with europium as a potentially attractive material to improving the solar cell efficiency.
Highlights
In the recent years the nanotechnologies related to the fabrication and application of nano-structural photonic-crystals active dielectrics doped is of fundamental interest for the physics of low-dimensional systems
The present work is devoted to study the influence of nanocrystalline structure of europium ions and photonic - crystal effects on the photoluminescence spectra matrix nanocomposites of opal-Bi12SiO20 opal - NaBi(MoO4)2, and opal - Bi2TeO5, infiltrated with europium C6H9EuO6 x H2O salt
The photoluminescence spectra of the salt solution and the essential opal infiltrated with C6H9EuO6 x H2O were measured
Summary
In the recent years the nanotechnologies related to the fabrication and application of nano-structural photonic-crystals active dielectrics doped is of fundamental interest for the physics of low-dimensional systems. The investigation of optical properties for new luminescent materials on the basis of synthetic opals which represent a class of 3D photonic crystals and offer a potentially opportunities to investigate the effect of spontaneous emission, low-threshold lasing, information processing and transferring (Joannopoulos, Villeneuve, & Fan, 1997). Special interest from the scientific and practical points of view represents nanocomposites opal-active dielectric, which activated by luminescent centres. The present work is devoted to study the influence of nanocrystalline structure of europium ions and photonic - crystal effects on the photoluminescence spectra matrix nanocomposites of opal-Bi12SiO20 opal - NaBi(MoO4), and opal - Bi2TeO5, infiltrated with europium C6H9EuO6 x H2O salt. The aim of present work is to clarify the nature of emission and comparing spectra of essential opal and dielectrics-infiltrated synthetic opals with europium
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