Effect of Zn substitution in Cr3+ doped MgAl2O4 mixed spinel nanoparticles on red/NIR emission properties

2019 ◽  
Vol 111 ◽  
pp. 294-300 ◽  
Author(s):  
Shreekrishna Karthik H.G. ◽  
Samvit G. Menon ◽  
Deepak Hebbar N. ◽  
K.S. Choudhari ◽  
Santhosh C. ◽  
...  
Keyword(s):  
Emission Properties ◽  
Zn Substitution ◽  
Mixed Spinel ◽  
Nir Emission ◽  
Spinel Nanoparticles

NIR Emission Properties of RE3+ Ions in Multicomponent Tellurite Glasses

2018 ◽  
pp. 203-224 ◽  
Author(s):  
M. S. Sajna ◽  
V. P. Prakashan ◽  
M. S. Sanu ◽  
Gejo George ◽  
Cyriac Joseph ◽  
...  
Keyword(s):  
Tellurite Glasses ◽  
Emission Properties ◽  
Nir Emission

scholarly journals Structural, thermal and broadband NIR emission properties of Nd3+/Pr3+/Ag NPs co-doped tellurite glass

2020 ◽  
Vol 28 (10) ◽  
pp. 14186 ◽  
Author(s):  
Xinjie Shen ◽  
Lizhang Xia ◽  
Yu Zhang ◽  
Jun Li ◽  
Gaobo Yang ◽  
...  
Keyword(s):  
Tellurite Glass ◽  
Ag Nps ◽  
Emission Properties ◽  
Nir Emission ◽  
Co Doped

Absorption and Emission Properties of Bismuth-Doped Silicate Glass

2013 ◽  
Vol 401-403 ◽  
pp. 567-570
Author(s):  
Bing Xu ◽  
Xiang Jun Xu ◽  
Hou Mei Dai ◽  
Zhen Wei Deng ◽  
Xiang Qun Lv
Keyword(s):  
Silicate Glass ◽  
Emission Intensity ◽  
Tunable Lasers ◽  
Fiber Amplifiers ◽  
Absorption Intensity ◽  
Absorption And Emission ◽  
Emission Properties ◽  
Nir Emission ◽  
Doped Glass ◽  
Co Doped

Single Bi-doped and M/Bi co-doped silicate glass (M=Al, Y, La) were prepared and broadband NIR emission were observed when the glass samples were pumped by 514 nm and 808 nm LD, respectively. The absorption intensity and emission intensity of the Y/Bi co-doped glass and La/Bi co-doped glass decrease obviously compared to single Bi-doped glass. The absorption intensity in the region of 600-1100 nm and the NIR emission intensity pumped by an 808 nm LD were remarkably enhanced by the introduction of Al2O3into the Bi-doped silicate glass. It is suggested that the Al/Bi co-doped silicate glass might be very useful for broadband fiber amplifiers and widely tunable lasers.

Effect of Ce3+ Concentration on the Luminescence Properties of Ce3+/Er3+/Yb3+ Tri-Doped NaYF4 Nanocrystals

2016 ◽  
Vol 16 (4) ◽  
pp. 3749-3753 ◽  
Author(s):  
Xuee Liu ◽  
Jianbei Qiu ◽  
Xuhui Xu ◽  
Dacheng Zhou
Keyword(s):  
Energy Transfer ◽  
Hydrothermal Method ◽  
Fluorescence Intensity ◽  
Emission Intensity ◽  
Doping Concentration ◽  
Near Infrared ◽  
Luminescence Properties ◽  
Emission Mechanism ◽  
Emission Properties ◽  
Nir Emission

In order to investigate the effect of Ce3+ concentration on the emission properties of Er3+/Yb3+ codoped NaYF4 nanocrystals, Ce3+/Er3+/Yb3+ tri-doped NaYF4 nanocrystals were prepared through a facile EDTA-assisted hydrothermal method. The upconversion (UC) and the near infrared (NIR) emission properties of Er3+ ions were systematically investigated in the NaYF4:Ce3+/Er3+/Yb3+ nanocrystals. Under 980 nm excitation, with the increasing of Ce3+ concentration, the emission intensity of Er3+ at 1550 nm (4I13/2 → 4I15/2) band increases initially and then decreases. The increase of the fluorescence intensity of 1550 nm is due to the energy transfer between Er3+ and Ce3+ ions: Er3+:4I11/2 +Ce3+:2F5/2 → Er3+:4I13/2 +Ce3+:2F7/2. But when Ce3+ doping concentration is 2.0%, the cross relaxation:Er3+:4I13/2 +Ce3+:2F5/2 →Er3+:4I15/2 +Ce3+:2F7/2 happens, which depopulates the 4I13/2 level of Er3+ and results in the decrease of the emission intensity of Er3+ at 1550 nm band. Meanwhile, incorporation of Ce3+ dramatically decreases the visible UC emission intensity. A possible emission mechanism was proposed.

Solution Structure and Dynamics, Stability, and NIR Emission Properties of Lanthanide Complexes with a Carboxylated Bispyrazolylpyridyl Ligand

2009 ◽  
Vol 48 (4) ◽  
pp. 1507-1518 ◽  
Author(s):  
Marta Mato-Iglesias ◽  
Teresa Rodríguez-Blas ◽  
Carlos Platas-Iglesias ◽  
Matthieu Starck ◽  
Pascal Kadjane ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Solution Structure ◽  
Emission Properties ◽  
Structure And Dynamics ◽  
Nir Emission ◽  
Dynamics Stability

Two dinuclear lanthanide complexes based on a salicylamide imine multidentate ligand: Synthesis, structure and NIR emission properties

Polyhedron ◽  
2019 ◽  
Vol 171 ◽  
pp. 212-220
Author(s):  
Ali Alhafeez Abdulrheem Shamshoom ◽  
Huan-Huan Meng ◽  
Wei Xi ◽  
Xue-Qin Song
Keyword(s):  
Lanthanide Complexes ◽  
Emission Properties ◽  
Multidentate Ligand ◽  
Nir Emission ◽  
Ligand Synthesis

Synthesis and optical characteristics of ZnGa2O4−xSx:Mn2+

2001 ◽  
Vol 667 ◽  
Author(s):  
J.S. Kim ◽  
H.L. Park ◽  
G.C. Kim
Keyword(s):  
Optical Characteristics ◽  
Emission Properties ◽  
Mixed Spinel

ABSTRACTThe first zinc gallium oxysulfides (ZnGa2O4−xSx) are synthesized and emission properties of ZnGa2O4−xSx and ZnGa2O4−xSx:Mn2+ have been investigated. The sulfur in ZnGa2O4−xSx forms tetrahedrons and the cations in ZnGa2O4−xSx are randomly distributed between tetrahedrons and octahedrons such that ZnGa2O4 structure can be viewed as a mixed spinel. The four-fold enhancement of the brightness of Mn2+emission can be the significant effect of forming oxysulfide in ZnGa2O4−xSx:Mn2+

scholarly journals Enhancement of NIR emission by a tight confinement of a hemicyanine dye within zeolitic MgAPO-5 nanochannels

2018 ◽  
Vol 17 (7) ◽  
pp. 917-922 ◽  
Author(s):  
Ainhoa Oliden-Sánchez ◽  
Rebeca Sola-Llano ◽  
Iñigo López-Arbeloa ◽  
Virginia Martínez-Martínez
Keyword(s):  
Emission Properties ◽  
Inclusion Method ◽  
Styryl Dye ◽  
Hemicyanine Dye ◽  
Nir Emission

The tight confinement of a styryl dye, LDS 730, within the 1D-nanochannels of a magnesium aluminophosphate, MgAPO-5, via a crystallization inclusion method, induces a boost in its emission properties in the NIR region.

Sign in / Sign up

Export Citation Format

Share Document