A Novel Phenomenon of Energy Transfer in Cd1-XZnxSiO3 : 0.01 Mn2+ Phosphor

2012 ◽  
Vol 549 ◽  
pp. 487-490 ◽  
Author(s):  
Xin Mu Zhou ◽  
Yong Xiu Li
Keyword(s):  
Energy Transfer ◽  
Ultraviolet Light ◽  
Sol Gel ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Emission Peak ◽  
Red Shift ◽  
Excitation Spectra ◽  
Gel Method ◽  
Sol Gel Method

Cd1-xZnxSiO3:0.01 Mn2+phosphor was synthesized by sol-gel method. It was characterized by excitation, emission spectra and XRD. The luminescent properties show the phenomenon of energy transfer from the tetrahedral coordinated Mn2+ion to the octahedral coordinated Mn2+ion after exciting by ultraviolet light, which boost the performance of the phosphor. With the increasing of Zn2+in Cd1-xZnxSiO3:0.01 Mn2+phosphor, it was observed the excitation spectra broadened and a red shift in the emission spectra, which emission peak moved from 580nm to 589nm.

Synthesis and Luminescent Properties of Eu2+ Doped Sr5SiO4Cl6 Phosphor by Sol–Gel Method

2016 ◽  
Vol 16 (4) ◽  
pp. 3468-3473
Author(s):  
Xu Li ◽  
Huaye Zhang ◽  
Aiwei Tang ◽  
Li Guan ◽  
Zhen Guo ◽  
...  
Keyword(s):  
Emission Intensity ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Particle Diameter ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Complexing Agent ◽  
Excitation Spectra ◽  
Gel Method ◽  
Sol Gel Method

The paper discusses preparation and luminescent properties of Sr5SiO4Cl6:Eu2+ blue phosphor, which was synthesized by sol–gel method. The emission and excitation spectra, SEM, XRD and diffuse reflection of the fluorescent powder were measured. It was shown that the samples were single phase of Sr5SiO4Cl6 by the XRD patterns. The photoluminescence and excitation spectra of this phosphor were investigated. The phosphor excited by 278 nm light showed an asymmetric spectrum. The emission spectra can be separated into three distinct peaks located at 450, 480 and 540 nm, respectively. The influences of Eu2+ ions concentration on the emission intensity of Sr5SiO4Cl6:Eu2+ phosphors were studied in detail. The influences of different sintering temperature on the emission intensity were also investigated. The optimal sintering temperature was 750 °C. Effects of the amount of complexing agent were studied and a ratio of 1∼1.1 to that of the cation was the best. The particle diameter of the phosphor was studied by SEM. The potential applications were also discussed.

Synthesis and Luminescent Properties of Mn2+-Doped Zinc Silicate Phosphors by Sol-Gel Method

2010 ◽  
Vol 434-435 ◽  
pp. 214-216 ◽  
Author(s):  
Ji Ming Zhang ◽  
Dong Lin Zhao ◽  
Zeng Min Shen
Keyword(s):  
Sol Gel ◽  
Green Light ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Nano Particles ◽  
Light Emitting ◽  
Gel Method ◽  
Sol Gel Method ◽  
Structural Details ◽  
Xrd Patterns

Abstract. Green light emitting Mn2+-doped Zn2SiO4 (Zn2SiO4:Mn2+) phosphor nano-particles were synthesized by sol-gel method combined with a furnace firing from the sol-gel solution made with ZnO, MnCO3 and tetraethoxysilan. The influences of annealing temperatures on the microstructures and photoluminescent properties of the Zn2SiO4:Mn2+ phosphors were investigated. The structural details of the phosphors were examined through XRD and SEM. The photoluminescent properties of the Zn2SiO4:Mn2+ phosphors were characterized by excitation and emission spectra. The results indicate that the XRD patterns of the Zn2SiO4:Mn2+ phosphors exhibit a willemite structure (-Zn2SiO4). Green photoluminescence whose emission peak is located at 525 nm were observed from the synthesized phosphor particles under UV excitation. The photoluminescent mechanisms of the Zn2SiO4:Mn2+ phosphors were discussed.

Luminescent properties and energy transfer of Y3Al5O12:Ce3+, Ln3+ (Ln=Tb, Pr) prepared by polymer-assisted sol–gel method

2012 ◽  
Vol 132 (11) ◽  
pp. 3004-3009 ◽  
Author(s):  
Xianju Zhou ◽  
Kaining Zhou ◽  
Yingmao Li ◽  
Zhiliang Wang ◽  
Qiaochun Feng
Keyword(s):  
Energy Transfer ◽  
Sol Gel ◽  
Luminescent Properties ◽  
Gel Method ◽  
Sol Gel Method

Characterization and luminescent properties of SiO2:ZnS:Mn2+ and ZnS:Mn2+ nanophosphors synthesized by a sol–gel method

2009 ◽  
Vol 404 (22) ◽  
pp. 4470-4475 ◽  
Author(s):  
M.M. Biggs ◽  
O.M. Ntwaeaborwa ◽  
J.J. Terblans ◽  
H.C. Swart
Keyword(s):  
Sol Gel ◽  
Luminescent Properties ◽  
Gel Method ◽  
Sol Gel Method

Synthesis and Characterization of Y2O3:Eu3+ Film Derived by Sol-Gel Processing

2007 ◽  
Vol 336-338 ◽  
pp. 593-596
Author(s):  
Chun Yang ◽  
Jun Ying Zhang ◽  
Hai Bing Feng ◽  
Wei Chang Hao ◽  
Tian Min Wang
Keyword(s):  
Raw Materials ◽  
Sol Gel ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Dip Coating ◽  
Organic Additive ◽  
Excitation Spectra ◽  
Excitation Peak ◽  
Close Relationship ◽  
Dip Coating Technique

Y2O3:Eu3+ thin film was synthesized by sol-gel method with inorganic salt raw materials, and the crystal structure and luminescent properties were investigated. By adding organic additive to the sol, a homogeneous film with high luminescent intensity could be obtained by dip-coating technique on the surface of alumina sheet and quartz glass. Structures of the films were studied by XRD and SEM. The excitation spectra of the films showed a wide excitation peak from 200nm to 260nm, and the emission spectra had a strongest emission peak at 611nm which revealed a close relationship with the calcining temperature.

scholarly journals Synthesis and Luminescent Properties of Red Phosphor Na1.8Zn2.1(MoO4)3Eu by Sol-Gel Method

2014 ◽  
Vol 26 (9) ◽  
pp. 2537-2540
Author(s):  
Jianfu Zhang ◽  
Hui Zhang ◽  
Ke Ran Geng ◽  
Zhen Ling Wang
Keyword(s):  
Sol Gel ◽  
Luminescent Properties ◽  
Red Phosphor ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals SOL-GEL PROCESSED SIO2-AL2O3 XEROGELS: SYNTHESIS AND LUMINESCENT PROPERTIES

2020 ◽  
Vol 86 (9) ◽  
pp. 3-13
Author(s):  
Sergii Smola ◽  
Yevhen Fadieiev ◽  
Nataliia Rusakova ◽  
Mariya Rusakova ◽  
Ninel Efryushina
Keyword(s):  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
Luminescence Band ◽  
Sol Gel ◽  
Luminescent Properties ◽  
Initial Mixture ◽  
Exciting Light ◽  
Drying Temperature ◽  
Gel Method ◽  
Sol Gel Method

SiO2-Al2O3 xerogels with various Si : Al ratios were synthesized via sol-gel method (two kinds of synthetic procedures were used) and characterized by means of elemental analysis, XRD, thermogravimetry and IR spectroscopy. No losses of precursors were found during the synthesis and the introduced components are quantitatively transferred from the initial mixture to the composition of the formed samples.The position of the luminescence band in the 300–500 nm region depends on the wavelength of the exciting light, time of gel maturation and the drying temperature, which is the manifestation of the influence of the structure of units in xerogels on the luminescent properties.

Structure and luminescent properties of oxyfluoride glass-ceramics with YF3:Eu3+ nanocrystals derived by sol-gel method

2019 ◽  
Vol 39 (15) ◽  
pp. 5010-5017 ◽  
Author(s):  
Natalia Pawlik ◽  
Barbara Szpikowska-Sroka ◽  
Tomasz Goryczka ◽  
Maciej Zubko ◽  
Józef Lelątko ◽  
...  
Keyword(s):  
Sol Gel ◽  
Glass Ceramics ◽  
Luminescent Properties ◽  
Oxyfluoride Glass ◽  
Gel Method ◽  
Sol Gel Method
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