Multi-color luminescence of uniform CdWO4nanorods through Eu3+ion doping

2015 ◽  
Vol 3 (12) ◽  
pp. 2865-2871 ◽  
Author(s):  
Dan Yue ◽  
Qingfeng Li ◽  
Wei Lu ◽  
Qi Wang ◽  
Mengnan Wang ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Ion Doping

Multi-color luminescence of uniform CdWO4:Eu3+nanorods can be realized only through altering the doping concentration of Eu3+ions.

Alleviating luminescence concentration quenching in lanthanide doped CaF2 based nanoparticles through Na+ ion doping

2018 ◽  
Vol 47 (22) ◽  
pp. 7534-7540 ◽  
Author(s):  
Bing Xu ◽  
Dongyu Li ◽  
Zhen Huang ◽  
Chunliang Tang ◽  
Wenhao Mo ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Concentration Quenching ◽  
Optimal Doping ◽  
Ion Doping ◽  
Optimal Doping Concentration ◽  
Luminescence Concentration Quenching

Optimal doping concentration of Nd3+ shifts from 10 mol% to 30 mol% through Na+ doping, along with an ∼32 times NIR brightness increase.

Performance Analysis of an EDFA Utilizing a Partially Doped Core Fiber (PDCF)

2016 ◽  
Vol 37 (3) ◽  
Author(s):  
M. A. Ahad ◽  
M.C. Paul ◽  
S.Z. Muhd-Yassin ◽  
A. Mansoor ◽  
H.A. Abdul-Rashid
Keyword(s):  
Doping Concentration ◽  
Noise Figure ◽  
Fiber Amplifiers ◽  
The Core ◽  
Erbium Ions ◽  
Erbium Doped ◽  
Ion Doping ◽  
Amplifier Gain ◽  
Core Fiber ◽  
Erbium Ion

AbstractThe effect of transversal design in Erbium-doped fiber amplifiers’ gain and noise figure performance is illustrated in this work. In this work, we investigate experimentally a single pass 980 nm pumped EDFA with partially doped Erbium core fiber (PDCF), which has the core partially doped with Erbium ions. Later, the enumerated results for PDCF are compared with a standard fully doped EDF, having similar Erbium ion doping concentration. The PDCF Amplifier gain and noise figure performance is studied against different pump power and signal power at different operating wavelengths. The noise figure indicates improvement due to reduced spontaneous emission from un-doped region of the core.

scholarly journals Influence of Mn2+ doping on structural phase transformation and optical property of TiO2:Mn2+ nanoparticles

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Trinh Thi Loan ◽  
Nguyen Ngoc Long
Keyword(s):  
Tio2 Nanoparticles ◽  
Doping Concentration ◽  
Sol Gel ◽  
Structural Phase ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
Defect States ◽  
Ion Doping ◽  
Raman Modes ◽  
Synthesized Materials

Titanium dioxide (TiO2) nanoparticles with various Mn2+-doping concentration (from 0 to 12 mol%) were successfully synthesized by the sol–gel method using titanium tetrachloride (TiCl4), and manganese II chloride tetrahydrate (MnCl2.4H2O)  as precursors. The phase and crystallinity of the synthesized materials were investigated by powder X-ray diffraction pattern and Raman spectroscopy. Diffuse reflection and photoluminescence spectra were taken to investigate the absorption and emission characteristics of the synthesized samples. The results show that the anatase and rutile phases existed simultaneously in all the doping TiO2 nanoparticles and the Mn2+ doping enhances anatase-rutile transformation. The Mn2+ contents did not affect the lattice of TiO2 host, but affected positions of its Raman modes. The optical band gap of the TiO2:Mn2+ decreases with the increase of doping concentration. Photoluminescence spectra of the TiO2:Mn2+ nanopaticles showed the transitions between the bands, the transitions related to defect states and the Mn2+ ion doping leads to quenching the photoluminescence.

scholarly journals Tuning the ferroelectric, dielectric and photoluminescence properties of 0.88(Na0.5Bi0.5)TiO3-0.12BaTiO3 ceramics by Sm ion doping

2019 ◽  
Vol 09 (05) ◽  
pp. 1950041 ◽  
Author(s):  
Yong Li ◽  
Jun Zhao ◽  
Xinglei Zhang ◽  
Qiannan Jia ◽  
Xihong Hao
Keyword(s):  
Doping Concentration ◽  
Ferroelectric Properties ◽  
Frequency Dispersion ◽  
Ferroelectric Ceramics ◽  
Photoluminescence Spectra ◽  
Photoluminescence Properties ◽  
Relaxor State ◽  
Optimal Value ◽  
Ion Doping ◽  
Light Excitation

Solid solutions of the lead-free 0.88([Formula: see text][Formula: see text]TiO3-0.12([Formula: see text][Formula: see text]TiO3 (NBT-BT: [Formula: see text]Sm) ferroelectric ceramics were synthesized by solid state reaction. The doping of Sm promotes the structure of the ceramics to transform toward morphotropic phase boundary, and it decreases the grain size of the ceramics. With the increase of Sm content, the ferroelectric properties are improved gradually, where the ferroelectric polarization increases and the coercive field decreases. Sm doping induces a dielectric anomaly with obvious frequency dispersion at a low temperature, exhibiting the transition from the ferroelectric to relaxor state. Moreover, the photoluminescence spectra of NBT-BT:[Formula: see text]Sm ceramics exhibit a strong orange emission upon blue light excitation of the 400[Formula: see text]nm to 500[Formula: see text]nm. The emission intensities are strongly dependent on the Sm doping concentration, which reached the optimal value as the doping concentration is 0.7%. These results suggest that the NBT-BT:[Formula: see text]Sm ceramics may have significant technological promise in novel multifunctional devices.

The effect of Eu3+ ion doping concentration in Gd2O3 fine spherical particles

2002 ◽  
Vol 344 (1-2) ◽  
pp. 276-279 ◽  
Author(s):  
A.M Pires ◽  
M.F Santos ◽  
M.R Davolos ◽  
E.B Stucchi
Keyword(s):  
Doping Concentration ◽  
Spherical Particles ◽  
Ion Doping

scholarly journals The influence of ion doping concentration on the luminescence properties of BaF2:PbWO4 crystals

2012 ◽  
Vol 30 (3) ◽  
pp. 232-236
Author(s):  
You-Bao WAN ◽  
Yu-Rong WU ◽  
Jian-Xin ZHANG ◽  
Pei-Zhi YANG ◽  
Lin-Rong XIAO ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Luminescence Properties ◽  
Ion Doping
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