New Phases of R[sub 3]GaO[sub 6] (R=Rare Earth Elements) and Their Luminescent Properties

2003 ◽  
Vol 150 (9) ◽  
pp. H201 ◽  
Author(s):  
Peimin Guo ◽  
Guobao Li ◽  
Fei Zhao ◽  
Fuhui Liao ◽  
Shujian Tian ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Luminescent Properties

Magneto-optic and luminescent properties of tellurite glass TeO2-ZnCl2 doped with rare-earth elements

2004 ◽  
Vol 77 (8) ◽  
pp. 1245-1248 ◽  
Author(s):  
I. A. Grishin ◽  
V. A. Gur?ev ◽  
E. B. Intyushin ◽  
Yu. E. Elliev ◽  
O. V. Pavlova ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Tellurite Glass ◽  
Luminescent Properties ◽  
Magneto Optic

scholarly journals LUMINESCENT PROPERTIES OF TERBIUM WITH S- (4-BROMANILIDE) METHYL ETHER OF SULFOSALICYLIC ACID

2020 ◽  
Vol 64 (1) ◽  
pp. 27-33
Author(s):  
Svetlana A. Elcheparova ◽  
Aneta A. Kokoeva ◽  
Inna A. Tatrokova
Keyword(s):  
Rare Earth ◽  
Methyl Ester ◽  
Rare Earth Elements ◽  
Complex Compound ◽  
Irradiation Time ◽  
Acid Methyl Ester ◽  
Luminescent Properties ◽  
Organic Reagent ◽  
Sulfosalicylic Acid ◽  
Organic Reagents

It was of interest to search for luminescent reactions to terbium in complexes with sulfosalicylic acid derivatives and to strengthen them by studying the influence of the third components (aminopolycarboxylic acids, organic bases, and surfactants). Absorption spectra of solutions of rare earth element complexes in the wavelength range of 220-880 nm were recorded using the SF-26 spectrophotometer. To obtain the maximum luminescence of the luminescent reaction of rare earth elements in complexes with organic reagents, a number of factors that have a significant impact on the intensity of solutions of luminescent complexes have been studied. Such factors are the pH of the complexes, concentration of reagent, time of maturation complexes, the irradiation time, the order of adding the reagents and the ionic strength of the solutions. According to studies conducted, surfactants increase the luminosity of terbium ions in complexes with sulfosalicylic acid derivatives. As a surfactant, decylpyridinium chloride was used in solutions. The existence of a bright luminescent green reaction of terbium in a complex with methyl ester S- (4-bromanilide) sulfosalicylic acid was established. The optimal conditions for the complexation of terbium were selected and highly sensitive luminescent methods for determining terbium in various objects were developed. Terbium is converted into a luminescent complex compound with an organic reagent S- (4-bromanililide) sulfosalicylic acid methyl ester in the presence of a cationic surfactant decylpyridinium chloride in a ratio of 1: 2: 13, pH 7.9 ± 0.08. The resulting complex compound of terbium upon irradiation with a mercury lamp under ultraviolet light gives intense green luminescence that is stable during standing and irradiation. As a consequence, the proposed method allows to determine terbium in the oxides of rare earth elements, which are quenchers of luminescence with a sensitivity of 10-8%, bypassing the extraction stage. The sensitivity of the determination of terbium in the oxides of the remaining lanthanides is 2.4·10-10%.

New Phases of Ln3GaO6 (Ln: Rare Earth Elements) and Their Luminescent Properties.

ChemInform ◽  
2003 ◽  
Vol 34 (51) ◽  
Author(s):  
Peimin Guo ◽  
Guobao Li ◽  
Fei Zhao ◽  
Fuhui Liao ◽  
Shujian Tian ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Luminescent Properties

scholarly journals Energy converting layers for thin-film flexible photovoltaic structures

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 820-825 ◽  
Author(s):  
Katarzyna Znajdek ◽  
Natalia Szczecińska ◽  
Maciej Sibiński ◽  
Przemysław Czarnecki ◽  
Gabriela Wiosna-Sałyga ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Luminescent Properties ◽  
High Energy ◽  
Visible Range ◽  
Active Particles ◽  
Light Capture ◽  
Energy Converting

Abstract The paper presents research focused on the efficiency improvement of inorganic flexible thin-film solar cells, using energy converting layers. The light capture enhancement was achieved through the introduction of layers based on rare-earth elements, as top coatings on the amorphous silicon photovoltaic structures. Such luminescent layers are converting high-energy photons into low-energy ones, which are more efficient in photovoltaic conversion of the investigated solar cells. Towards this goal, powders consisting rare-earth elements were applied as active particles in polymer layer. For practical experiments, the screen-printing method, as a cheap, reliable and industrially-ready technology was used for layers deposition. For the experiments two compositions were selected: Sr4Al14O25: Eu,Dy (BGL-300M) and SrAl2O4: Eu,Dy (G-300M). These materials are characterized by excellent thermal and optical stability and interesting luminescent properties (they absorb ultraviolet and emit in the visible range). For the verification of investigated materials and methods, various compositions of powders and proportions were tested and analyzed.

Influence of rare earth elements (Y, Gd and Lu) on the luminescent properties of green phosphor ZnMoO4:Tb3+

Luminescence ◽  
2013 ◽  
Vol 29 (7) ◽  
pp. 711-714 ◽  
Author(s):  
Y. Xu ◽  
W. Yang ◽  
X. Li ◽  
W. Li ◽  
X. Ju
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Luminescent Properties ◽  
Green Phosphor

scholarly journals Creating nanoscale luminescence centres in silver halides suitable for infrared application

2021 ◽  
Vol 2064 (1) ◽  
pp. 012100
Author(s):  
E A Korsakova ◽  
V V Lisenkov ◽  
L V Zhukova ◽  
A N Orlov ◽  
A S Korsakov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Optical Radiation ◽  
Fine Particles ◽  
Silver Halide ◽  
Energy Levels ◽  
Experimental Studies ◽  
Luminescent Properties ◽  
Silver Halides ◽  
Middle Infrared

Abstract This study shows the possibility of creating luminescence centres in silver halide media using substances based on rare-earth elements such as neodymium, ytterbium and dysprosium. These luminescent substances in the form of fine particles of both nanoscale and microscale dimensions can be introduced into the AgCl0.25Br0.75 ceramic matrix highly transparent in the spectral range of 0.5–35 μm. Our theoretical and experimental studies showed that the introduction of luminescent nanoparticles or microparticles at the amount of 0.5 wt.% into AgCl0.25Br0.75 ceramics neither reduces the level of its transmission in the MIR region nor shortens the range of transmission. What is more, we proved that the luminescent properties of nanoparticles remain well preserved after doping silver halide ceramic media with them. Therefore, silver halides doped with rare-earth elements in question can be used for developing the sources of coherent middle infrared radiation, with appropriate energy levels being excited by optical radiation or pulsed electric field.

Sign in / Sign up

Export Citation Format

Share Document