Combinatorial search for advanced luminescence materials

Sun, Tianshu

doi:10.1002/(sici)1097-0290(1998)61:4<193::aid-cc2>3.0.co;2-8

Cited by 31 publications

(11 citation statements)

References 21 publications

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“…on the preparation of nano‐Y 2 O 3 :Eu by the spray pyrolysis method has shown that the emission efficiency has increased with the increase in the crystallite size of the phosphor. The Y 2 O 3 :Eu material prepared at 1400°C was found to have the crystallite size of 42.8 nm and the PL efficiency was found to be 51.76% against the theoretical quantum efficiency of 97% 17 . The PL efficiency of nanocrystalline phosphor versus bulk phosphor seems to be ambiguous.…”

Section: Introductionmentioning

confidence: 94%

Photoluminescence Efficiencies of Nanocrystalline versus Bulk Y2O3: Eu Phosphor-Revisited

Arunkumar

Prabu

Munnisamy³

et al. 2010

Journal of the American Ceramic Society

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Highly efficient yttrium oxide doped with trivalent europium (Y2O3:Eu) phosphor was prepared through precursors synthesized by hydrothermal method. Crystalline precursors, namely europium‐doped yttrium carbonate (Y2(CO3)3·2H2O:Eu) and europium‐doped yttrium hydroxy carbonate (Y(OH)CO3:Eu), were prepared by varying the concentration of yttrium to europium ions and urea in the reaction mixture. The precursor materials on annealing at 700°C gave nanocrystalline Y2O3:Eu, which was further processed at high temperatures in the absence and presence of sintering aid to yield phosphor materials with varying crystallite size and morphology. The precursors and phosphor material were characterized using FTIR, TGA, powder XRD, SEM, TEM, and photoluminescence (PL) spectral studies. The emission efficiency was found to depend on the crystallite size, morphology, and particle size of the phosphor materials. It was observed that phosphor material with spherical morphology and particle size of 0.5–1.0 μm with crystallite size of 100 nm has the highest PL efficiency.

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Section: Introductionmentioning

confidence: 94%

Photoluminescence Efficiencies of Nanocrystalline versus Bulk Y2O3: Eu Phosphor-Revisited

Arunkumar

Prabu

Munnisamy³

et al. 2010

Journal of the American Ceramic Society

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“…Since Schultz and co-workers [13] published a combinatorial approach to material science, combinatorial chemistry has been demonstrated high efficiency for searching candidate functional materials in the fields of luminescence [14][15][16], ferroelectric/dielectric [17], drug [18] and catalysis [19], etc. and has become an important branch of materials science [20].…”

Section: Introductionmentioning

confidence: 99%

Application of Parallel Synthesis and High Throughput Characterization in Photocatalyst Discovery

Sun¹,

Ding²,

Bao³

et al. 2011

CCHTS

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The last decade has seen significant progresses in the application of combinatorial approaches and high-throughput screening in photocatalyst discovery. This paper aims at providing a comprehensive review on the parallel synthesis and high-throughput characterization of photocatalysts, including the development of instrumentation, strategy of experiment, preparation of libraries, high-throughput screening technique and data analysis. The review ends with a summary of the remaining challenges and prospects on combinatorial photocatalyst discovery.

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“…Radiative transitions between the 4 f levels of lanthanide ions are found to be efficient in the development of various optical devices such as glass lasers, phosphors and optical amplifiers and so on 1–3 . Nowadays, rare earth (RE)‐ion‐activated phosphors are applied in various fields such as fluorescent tube, color televisions, etc 4,5 . In these devices, luminescent materials absorb the energy generated from cathode ray or UV radiation and then convert it to visible light.…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcination Temperature and Concentration on Luminescence Properties of Novel Ca₃Y₂Si₃O₁₂:Eu Phosphors

Bandi

Nien

et al. 2009

Journal of the American Ceramic Society

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In the present work, nanocrystalline Ca3Y2(1−x)Si3O12:Eux (x=1, 5, 10, and 20 mol%) novel phosphors were synthesized by a sol–gel method. The effect of temperature and concentration on structural and luminescence properties of nanocrystalline powders were investigated under UV excitation. The X‐ray diffraction profiles showed that all peaks could be attributed to the orthorhombic Ca3Y2Si3O12 doped Eu phase at the various calcination temperatures with various concentrations. Scanning electron microscopy was carried out to understand the surface morphological features and grain sizes. Photoluminescence (PL) measurements exhibited the presence of all transitions of Eu3+ dopant, being the 5D0→7F2 transition the most intense under the charge transfer band and it was observed to be located at around 250 nm. It was also found that, the PL intensity was strongly dependent on both the calcination temperature and dopant concentration. The highest PL intensity was observed for x=5 mol% with temperature at 1000°C. It was observed that the spectral features possess sharp and bright emission for potential applications on the flat panel displays and some other related electronic systems, in observing the images of red color.

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Combinatorial search for advanced luminescence materials

Cited by 31 publications

References 21 publications

Photoluminescence Efficiencies of Nanocrystalline versus Bulk Y2O3: Eu Phosphor-Revisited

Photoluminescence Efficiencies of Nanocrystalline versus Bulk Y2O3: Eu Phosphor-Revisited

Application of Parallel Synthesis and High Throughput Characterization in Photocatalyst Discovery

Effect of Calcination Temperature and Concentration on Luminescence Properties of Novel Ca₃Y₂Si₃O₁₂:Eu Phosphors

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Combinatorial search for advanced luminescence materials

Cited by 31 publications

References 21 publications

Photoluminescence Efficiencies of Nanocrystalline versus Bulk Y2O3: Eu Phosphor-Revisited

Photoluminescence Efficiencies of Nanocrystalline versus Bulk Y2O3: Eu Phosphor-Revisited

Application of Parallel Synthesis and High Throughput Characterization in Photocatalyst Discovery

Effect of Calcination Temperature and Concentration on Luminescence Properties of Novel Ca3Y2Si3O12:Eu Phosphors

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Effect of Calcination Temperature and Concentration on Luminescence Properties of Novel Ca₃Y₂Si₃O₁₂:Eu Phosphors