Rare earth-doped polycrystalline zinc oxide electroluminescent ceramics

Bachir, S.; Sandouly, C.; Kossanyi, J.; Ronfard-Haret, J.C.

doi:10.1016/s0022-3697(96)00067-4

Cited by 71 publications

(42 citation statements)

References 35 publications

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“…It indicated that the Eu 3+ content in the nanocrystals might be less than 5 at%. This result was in agreement with the data reported by different authors [6,7], For as-deposited Mg x Zn 1-x O:8%Eu nanocrystals, the XRD pattern was quite coarse although the peak belongs to the (002) direction of ZnO could be still identified. This might be due to the low growth temperature leading to the poor crystal quality.…”

Section: Methodssupporting

confidence: 93%

Microstructure and optical properties of Eu-doped Mg x Zn1−x O hexagonal nanocrystals

Cui

Liu

et al. 2010

Sci. China Technol. Sci.

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Eu-doped Mg x Zn 1-x O hexagonal nanocrystals with wurtzite-type structure were fabricated on quartz substrates by electron beam evaporation using Mg 0.15 Zn 0.85 O: Eu y (0≤y≤0.08) target combined thermal annealing followed with rapid cooling. The influence of Eu on the microstructure and optical properties of Mg x Zn 1-x O hexagonal nanocrystals had been investigated using X-ray diffraction spectra, X-ray photoelectron energy spectra, scanning electron microscopy, absorption spectra, and photoluminescence spectra. It was found that Eu-doped Mg x Zn 1-x O hexagonal nanocrystals annealed at 700°C exhibited (002) preferred orientation, whereas undoped Mg x Zn 1-x O hexagonal nanocrystals annealed at 700°C did not exhibit preferential growth. The Mg concentration of Eu-doped and undoped Mg x Zn 1-x O hexagonal nanocrystals annealed at 700°C were both 0.08. However, an evident phase separation of the Eu-doped Mg x Zn 1-x O hexagonal nanocrystals with Mg 0.08 Zn 0.92 O/Mg 0.03 Zn 0.97 O/air SQW core-shell structures was observed. The binding energy of exciton in Mg 0.03 Zn 0.97 O (66 meV) was larger than that in Mg 0.08 Zn 0.92 O (50 meV) that was further evidence of Mg 0.08 Zn 0.92 O/Mg 0.03 Zn 0.97 O/air SQW core-shell structures formed. Mg x Zn 1-x O hexagonal nanocrystals, europium, SEM, absorption spectra, photoluminescence, X-ray photoelectron energy spectra Citation: Li N, Cui H T, Liu Y X, et al. Microstructure and optical properties of Eu-doped Mg x Zn 1-x O hexagonal nanocrystals.

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Section: Methodssupporting

confidence: 93%

Microstructure and optical properties of Eu-doped Mg x Zn1−x O hexagonal nanocrystals

Cui

Liu

et al. 2010

Sci. China Technol. Sci.

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“…It has a stable wurtzite structure with lattice spacing, a = 0⋅325 nm and c = 0⋅521 nm. Most of the ZnO: RE 3+ crystals have been synthesized by traditional high temperature solid state method (Kossanyi et al 1990;Kouyate et al 1991;Bachir et al 1996Bachir et al , 1997 which is energy consuming and difficult to control the particle properties.…”

Section: Introductionmentioning

confidence: 99%

Red luminescence from hydrothermally synthesized Eu-doped ZnO nanoparticles under visible excitation

Aneesh

Jayaraj

2010

Bull Mater Sci

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Eu-doped ZnO nanoparticles were synthesized by hydrothermal method. The Eu-dopant concentration has been varied by varying the amount of Eu-dopant concentration. These nanoparticles were structurally characterized by X-ray diffraction, transmission electron microscopy and selected area electron diffraction and it confirms the formation of nanoparticles having standard wurtzite structure. Photoluminescence studies show that these nanoparticles exhibit a sharp red luminescence due to the intra-4 f transitions of Eu 3+ ions at an excitation of 397 nm and 466 nm. Luminescence quenching is observed in the nanoparticles as the Eu-dopant concentration increases. Incorporation of Eu in the nanoparticles was confirmed by the energy dispersive X-ray studies.

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“…13 During the last years zinc oxalate was discussed as a precursor of nano-structured, large surface area ZnO particles [14][15][16][17][18] with an enormous applicability in the field of catalysis, opto-electronics and electronics. [19][20][21][22][23][24][25][26][27][28][29][30][31] Even the related nickel(II) oxalate and the decomposition product NiO is in the center of attention since years. [32][33][34][35][36][37] Microand nano-structured nickel oxides in form of spheres, particles or rods are reported.…”

Section: Introductionmentioning

confidence: 99%

Bis(1,2-dithiosquarato)nickelates(II) – Synthesis, Structure, EPR and Thermal Behavior

Strauch

Neumann

Kelling

et al. 2015

ACSi

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Dedicated to the memory of Prof. Dr. Jurij V. Bren~i~. Abstract1,2-Dithiosquaratonickelates are available by direct synthesis from metal salts with dipotassium-1,2-dithiosquarate and the appropriate counter cations. The synthesis and characterization, including mass spectrometry, of a series 1,2-dithios-, with several "onium" cations is reported and the X-ray structures of two diamagnetic complexes, (HexPh 3 P) 2 [Ni(dtsq) 2 ] and (BuPh 3 P) 2 [Ni(dtsq) 2 ] with sterically demanding counter ions are presented. The diamagnetic nickel complexes have been doped as host lattices with traces of Cu(II) to measure EPR for additional structural information. The thermal behavior of this series is studied by thermogravimetry and differential thermal analysis (TG/DTA). The thermolysis in air as well as under nitrogen atmosphere of these complexes results in nickel oxide nano-particles in all cases, which are characterized by X-ray powder diffraction.

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Rare earth-doped polycrystalline zinc oxide electroluminescent ceramics

Cited by 71 publications

References 35 publications

Microstructure and optical properties of Eu-doped Mg x Zn1−x O hexagonal nanocrystals

Microstructure and optical properties of Eu-doped Mg x Zn1−x O hexagonal nanocrystals

Red luminescence from hydrothermally synthesized Eu-doped ZnO nanoparticles under visible excitation

Bis(1,2-dithiosquarato)nickelates(II) – Synthesis, Structure, EPR and Thermal Behavior

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