Reliability of rare-earth-doped infrared luminescent nanothermometers

Nanoscale ◽  
2018 ◽  
Vol 10 (47) ◽  
pp. 22319-22328 ◽  
Author(s):  
Lucía Labrador-Páez ◽  
Marco Pedroni ◽  
Adolfo Speghini ◽  
José García-Solé ◽  
Patricia Haro-González ◽  
...  
Keyword(s):  
Rare Earth ◽  
Emission Spectra ◽  
Rare Earth Doped

Rare-earth-doped luminescent nanothermometers are not reliable as their emission spectra can be affected by numerous environmental and experimental factors.

Band-Gap Energy Dependence of Emission Spectra in Rare Earth-Doped Zn(1-x)CdxS Thin Film Electroluminescent Devices

1992 ◽  
Vol 31 (Part 1, No. 2A) ◽  
pp. 295-300 ◽  
Author(s):  
Noboru Miura ◽  
Takashi Sasaki ◽  
Hironaga Matsumoto ◽  
Ryotaro Nakano
Keyword(s):  
Thin Film ◽  
Rare Earth ◽  
Band Gap ◽  
Energy Dependence ◽  
Emission Spectra ◽  
Band Gap Energy ◽  
Electroluminescent Devices ◽  
Gap Energy ◽  
Rare Earth Doped

Emission spectra and thermoluminescence of rare-earth-doped bismuth silicate crystals grown by modified Bridgman method

2014 ◽  
Vol 401 ◽  
pp. 305-307 ◽  
Author(s):  
Zhengye Xiong ◽  
Jiayue Xu ◽  
Yan Zhang ◽  
Zhijian Tan ◽  
Hui Shen ◽  
...  
Keyword(s):  
Rare Earth ◽  
Emission Spectra ◽  
Bridgman Method ◽  
Bismuth Silicate ◽  
Rare Earth Doped

scholarly journals Structure and Photoluminescence Properties of Rare-Earth (Dy3+, Tb3+, Sm3+)-Doped BaWO4 Phosphors Synthesized via Co-Precipitation for Anti-Counterfeiting

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4165
Author(s):  
Jae-yong Jung ◽  
Juna Kim ◽  
Young-Seok Shim ◽  
Donghyun Hwang ◽  
Chang Sik Son
Keyword(s):  
Rare Earth ◽  
Emission Spectra ◽  
Colloidal Solutions ◽  
X Ray Diffraction ◽  
Strong Emission ◽  
Crystallographic Characteristics ◽  
Barium Tungstate ◽  
Xrd Patterns ◽  
Co Precipitation ◽  
Rare Earth Doped

Barium tungstate (BaWO4) powders with various sintering temperatures, and BaWO4:Dy3+ phosphor samples with concentrations of different rare-earth (RE) activator ions (Dy3+, Sm3+, Tb3+) were prepared through co-precipitation. The structural, morphological, and photoluminescent characteristics of barium tungstate phosphors depend on the concentration of RE ions. The crystallographic characteristics of the synthesized BaWO4 were analyzed using X-ray diffraction (XRD) patterns. The size and shape of the crystalline particles were estimated based on images measured with a field emission scanning electron microscope (FE-SEM). As the sintering temperature of the BaWO4 particles increased from 400 °C to 1000 °C, the size of the particles gradually increased and showed a tendency to clump together. In the sample doped with 7 mol % Dy3+ ions, the intensity of all emission bands reached their maximum. The emission spectra of the RE3+-doped BaWO4 powders by excitation at 325 nm were composed of yellow (Dy3+), red (Sm3+), and green (Tb3+) band at 572, 640, and 544 nm. This indicates that most of the RE3+ ions absorbed the position without reversal symmetry in the BaWO4 lattice. These results propose that strong emission intensity and tunable color for the phosphors can be accomplished by rare-earth doped host with an suitable quantity. In addition, the phosphor thin films, having high transparency from aqueous colloidal solutions, were deposited on banknotes, and it is considered whether it is suitable for anti-counterfeiting applications.

scholarly journals Rare Earth Doped Alkali Earth Sulfide Phosphors for White-Light LEDs

2011 ◽  
Vol 2011 ◽  
pp. 1-3 ◽  
Author(s):  
K. Suresh ◽  
K. V. R. Murthy ◽  
Ch. Atchyutha Rao ◽  
N. V. Poornachandra Rao
Keyword(s):  
Rare Earth ◽  
White Light ◽  
Light Emitting Diode ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Light Emitting ◽  
Blue Led ◽  
Broadband Absorption ◽  
Application Requirements ◽  
Rare Earth Doped

CaS:Eu and SrS:Eu phosphors were synthesized by solid-state reaction. The effects of doping concentrations on luminescent properties of phosphors are investigated. The samples are excited using electroluminescent blue light emitting diode (460 nm) to examine them as potential coating phosphors for white-light LEDs. The excitation and emission spectra of these phosphors are broadband which can be viewed as the typical emission of Eu2+ ascribed to the 4f–5d transitions. Because of their broadband absorption in the region 400–630 nm, these phosphors meet the application requirements for blue LED chips. A white-light LED was fabricated through the integration of a 460 nm chip. The results indicate that these phosphors can be considered as candidates for the application in blue LED chip-based white-light LEDs.

Waveguide amplifiers in rare-earth doped glasses : fabrication, characterisation [MATH] modelling

1994 ◽  
Vol 04 (C4) ◽  
pp. C4-277-C4-280 ◽  
Author(s):  
B. HYDE ◽  
D. BARBIER ◽  
J. HUBNER ◽  
J.-M. JOUANNO ◽  
A. KEVORKIAN ◽  
...  
Keyword(s):  
Rare Earth ◽  
Waveguide Amplifiers ◽  
Doped Glasses ◽  
Rare Earth Doped

SYNTHESIS AND PHOTOLUMINESCENCE STUDIES OF RARE EARTH DOPED [1.5%] CaO

2019 ◽  
Vol 7 (3) ◽  
pp. 37
Author(s):  
JITESH CHANDRAPAL SHARMA ◽  
K. SURESH ◽  
Y. H. GANDHI ◽  
K. V. R. MURTHY ◽  
◽  
...  
Keyword(s):  
Rare Earth ◽  
Photoluminescence Studies ◽  
Rare Earth Doped

Improving VCSEL's & Rare-Earth-Doped Led's.

1998 ◽  
Author(s):  
hyatt M. Gibbs ◽  
Galina Khitrova
Keyword(s):  
Rare Earth ◽  
Rare Earth Doped
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