611 resultados para EU3
Resumo:
-Y2SiO5Eu^3Y2SiO5Y2SiO5260-270nm320nmFO^-YSOEu^3Y2SiO5FOEu^2300nm390nmEu^3Y2SiO5
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We report near infrared broadband emission of bismuth-doped barium-aluminum-borate glasses. The broadband emission covers 1.3 mum window in optical telecommunication systems. And it possesses wide full width at half maximum (FWHM) of similar to 200nm and long lifetime as long as 350 mus. The luminescent properties are quite sensitive to glass compositions and excitation wavelengths. Based on energy matching conditions, we suggest that the infrared emission may be ascribed to P-3(1) --> P-3(0) transition of Bi+. The broad infrared emission characteristics of this material indicate that it might be a promising candidate for broadband optical fiber amplifiers and tunable lasers. (C) 2005 Optical Society of America.
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In this paper, we report the synthesis of high-luminance Y2O3:Eu nanocrystal through a citrate-nitrate complexation combustion method at a low temperature of 200-280 degrees C. The as-combusted Y2O3:Eu phosphors are almost equiaxed crystallites with an average size of 30-40 run, and have an intense red luminescence. The present fuel-deficient method suggests that by control of the ratio of citric acid to nitrates, it is valuable for the fabrication of Y2O3 nanoparticles without heat treatment. This process should be applicable to a wide range of nanocrystal oxides.
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Y3Al5O12:Eu nanophosphors were synthesized by a gel combustion method. The structure of phosphors was characterized by XRD and FTIR. YAG phase came to occur when YAG:Eu precursors were sintered at 800 , although the phase was mainly amorphous. The organ
Resumo:
Eu3+MCLR-BSA,.Eu3+150,100 ng/mL.0.02 ng/mL,0.05~10 ng/mL,94%.
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Glass and polymer interstacked superlattice like nanolayers were fabricated by nanosecond-pulsed laser deposition with a 193-nm-ultraviolet laser. The individual layer thickness of this highly transparent thin film could be scaled down to 2 nm, proving a near atomic scale deposition of complex multilayered optical and electronic materials. The layers were selectively doped with Er3\+ and Eu3\+ ions, making it optically active and targeted for integrated sensor application. The Authors.
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Eu2+-doped ZnS nanoparticles with an average size of around 3 nm were prepared, and an emission band around 530 nm was observed. By heating in air at 150 degrees C, this emission decreased, while the typical sharp line emission of Eu3+ increased. This suggests that the emission around 530 nm is from intraion transition of Eu2+: In bulk ZnS:Eu2+, no intraion transition of Eu2+ was observed because the excited states of Eu2+ are degenerate with the continuum of the ZnS conduction band. We show that the band gap in ZnS:Eu2+ nanoparticles opens up due to quantum confinement, such that the conduction band of ZnS is higher than the first excited state of Eu2+, thus enabling the intraion transition of Eu2+ to occur.
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Silica spheres doped with Eu(TTFA)(3) and/or Sm(TTFA)(3) were synthesized by using the modified Stober method. The transmission electron microscope image reveals that the hybrid spheres have smooth surfaces and an average diameter of about 210 nm. Fluorescence spectrometer was used to analyze the fluorescence properties of hybrid spheres. The results show that multiple energy transfer processes are simultaneously achieved in the same samples co-doped with Eu (TTFA)(3) and Sm(TTFA)(3), namely between the ligand and Eu3+ ion, the ligand and Sm3+ ion, and Sm3+ ion and Eu3+, ion. Energy transfer of Sm3+-> Eu3+, in the hybrid spheres leads to fluorescence enhancement of Eu3+ emission by approximately an order of magnitude. The lifetimes of the hybrid spheres were also measured.
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LEDLEDLEDLEDLEDLEDYAG:CeUVLEDLED LED 1. LEDEu2+HTP-Ca3SiO4Cl2:Eu2+LEDHTP-Ca3SiO4Cl2 2. Eu2+LEDLTP-Ca3SiO4Cl2:Eu2+LED 3. LEDEu2+Li2CaSiO4:Eu2+LED 4. CaMoO4:Eu3+CaMoO4:Eu3+3LED
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// (Na3C6H5O7•2H2O)(NaF, NH4FNaBF4)pHLnF3 (Ln = La-Lu)NaREF4 (RE = Y, Yb, Lu)(Yb)(Lu)Eu3+, Tb3+Yb3+/Er3+, Yb3+/Ym3+(LEDs)/ CaWO4, CaWO4:Eu3+CaWO4:Tb3+
Resumo:
hehe,Eu3+Sm3+Yb3+YBO3EuYBO3C2/c Eu3+Eu3+Gd4GdO(BO3)3:EuLi2Lu5O4(BO3)3:EuEu3+Eu3+LuLu1Sr2CeO4O1CeO2Ce
Resumo:
Field Emission Displays, FEDFEDFED (FED)(FED)-(FED) [(LaGaO3: Re3+ (Re = Eu, Tb, Dy, Tm, Sm)][(CaIn2O4: Re3+ (Re = Eu, Pr, Tb, Dy,)][(SrIn2O4: Re3+ (Re = Pr, Tb, Dy)][Lu3Ga5O12:Re3+ (Re = Eu, TbPr)]Pr, Sm, Eu, Tb, Dy, TmSr2CeO4SiO2CaTiO3:Pr3+, Y3Al5O12:Ce3+/Tb3+/Ga2O3:Dy3+XRDFTIRSEMTEM(PL)(CL) (LaGaO3)(Eu3+, Tb3+, Dy3+, Tm3+, Sm3+)(Eu3+, Tb3+, Dy3+, Tm3+, Sm3+)LaGaO3: Eu3+LaGaO3: Dy3+LaGaO3: Tm3+LaGaO3: Sm3+LaGaO3: Sm3+,Tb3+LaGaO3: Tb3+Tb3+LaGaO3: Tb3+LaGaO3: Tm3+FED(Y2SiO5: Ce3+NP-1047)LaGaO3: Sm3+((Zn,Cd)S: AgNP-1020)(LaGaO3: Sm3+,Tb3+), [(LaGaO3: Re3+ (Re = Eu, Tb, Dy, Tm, Sm )] Sr/CaIn2O4Sr/CaIn2O4Pr3+/Tb3+/Dy3+Sr/CaIn2O4Pr3+/ Tb3+/Dy3+Pr3+/Tb3+/Dy3+Sr/CaIn2O4: Pr3+/Tb3+/Dy3+(CL)(PL)CL CaIn2O4:Eu3+CaIn2O4:Eu3+Eu3+ Lu3Ga5O12:Re3+ (Re = Eu, TbPr)UVLu3Ga5O12: Eu3+, Lu3Ga5O12: Pr3+Eu3+, Pr3+Lu3Ga5O12:Tb3+Tb3+ Sr2CeO4UV(Ce4+-O2-) SiO2@CaTiO3:Pr3+SiO2@Y3Al5O12: Ce3+/Tb3+, FESEMTEMSiO2UVSiO2@CaTiO3:Pr3+Pr3+ 1D23H4 (612 nm)SiO2@Y3Al5O12:Ce3+SiO2@Y3Al5O12:Tb3+ Ce3+5d-4fTb3+5D4-7FJ (J = 6, 5, 4, 3)PLCL Ga2O3:Dy3+-Ga2O3:Dy3+--Ga2O3Dy3+--Ga2O3:Dy3+
Resumo:
CePO4:TbCePO4:Tb/LaPO4(/)CePO4CePO4:Tb10-30 nm200 nmCePO4:Tb/LaPO4(/)LaPO42-10 nmCePO4:TbCePO4:Tb/LaPO4(/)Ce3+ (5d - 4f)Tb3+ 5D4-7FJ(J = 6-3)CePO4:TbCePO4:Tb/LaPO4(/)/ (KBF4NaFNH4F)CeF3CeF3UV-VisEuF30.9 m-1.0 m0.14 mEuF3EuF3 CeVO4YVO4:Eu3+ CeVO45 nm150 nmCeVO4(122 m2•g-1)YVO4:Eu3+ 90-150 nm250-300 nmYVO4:EuEu3+ 5D0-7FJ(J = 1- 4)5D0-7F2(614nm)
Resumo:
CeF3:Tb3+SOCl2CeF3:Tb3+ CeF3:Tb3+ CeF3:Tb3+ P123CeF3:Tb3+ 24 h NaYF4:Yb3+, Er3+ NaYF4:Yb3+, Er3+ NaYF4:Yb3+, Er3+ P123PVP TMB NaYF4:Yb3+, Er3+ 12 h YVO4:Eu3+ 80 nm43 nmYVO4:Eu3+ 5D0FT-IR XPS Eu3+ (5D0 level) CAPTES
Resumo:
PDP-PDPPDPPDP- PDPPDPPDPYGdBO_3LaGdPO4YGdVO4YPVO_4LoBSIOSXRDIRSEMXPSTG-DTAPDPVUV1Y,GdBO_3RE~(3+)REEuThVUVsEM100-200nmXPSY,GdBO_3RE~(3+)VUV110-175nmB3G"B-OGGY,GdBO3:RE3Gd3RE3PDPEu3Th3GdB03Y,GdBO3Eu~(3+)2GPDPL aGdPo4RE3REEuTb2HPO4pH5240oC3SEMLaP04Eu3+GdPO4Eu3+Gd3LaGdPO4KE3RE=EuTbVUVGd3Gd3Gd3LaGdPO4Eu3+Gd3Eu3+xPsLaPO4GdP04LaP04O22PGdPo4O2-2pGd34fLaGdPO4RE3VUV3Y,GdVO4Eu3+VUV120-170nmvO43200nm2PO4fY5d20onmEu3VO43-Gd3YGdVO4E"vLJ'vGGd3vo43+Eu3+Y,GdVO4Eu3+Y,Gdvo4EusVO_4~(3-)Eu~(3+)VO_4~(3-)vuvGd~(3+)VO_4~(3-)UVEu~(3+)Gd34YPvO4Eu3"pH12.52406YPVo4Eu3XRDSEMYPVO4Eu3VO3-4YPO4Eu3+100-150nmYVO4Eu3+400-450nmYP VO4:Eu3+VUVEu3+VO3-4~5D_0~7F_2~5D_0~7F_1VO_4~(3-_VO4YPVO4Eus"VUVYP,VO4Eu35LaBSIOSSEM2-3mLaBSiO_5Eu~(3+)1300-400cm~(-1)BO_4SiO_4LaBSiO_5:Re~(3+)RE=EuSmThvuvVUV125-200nmBO_4125-165nmSiO4165-183nmLaBSiO_5RE~(3+)REEuSmTb254nm
