Controlled-Synthesis, Self-Assembly Behavior, and Surface-Dependent Optical Properties of High-Quality Rare-Earth Oxide Nanocrystals

2007 ◽  
Vol 19 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Rui Si ◽  
Ya-Wen Zhang ◽  
Huan-Ping Zhou ◽  
Ling-Dong Sun ◽  
Chun-Hua Yan
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Self Assembly ◽  
Rare Earth Oxide ◽  
Controlled Synthesis ◽  
High Quality ◽  
Assembly Behavior

High-Quality Sodium Rare-Earth Fluoride Nanocrystals:  Controlled Synthesis and Optical Properties

2006 ◽  
Vol 128 (19) ◽  
pp. 6426-6436 ◽  
Author(s):  
Hao-Xin Mai ◽  
Ya-Wen Zhang ◽  
Rui Si ◽  
Zheng-Guang Yan ◽  
Ling-dong Sun ◽  
...  
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Controlled Synthesis ◽  
High Quality ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

Rare earth oxide films: their preparation and optical properties

1981 ◽  
Vol 20 (10) ◽  
pp. 1755 ◽  
Author(s):  
T. Marcinow ◽  
K. Truszkowska
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Oxide Films ◽  
Rare Earth Oxide

Processing and Optical Properties of YAG- and Rare-Earth-Aluminum Oxide-composition Glass Fibers

2001 ◽  
Vol 702 ◽  
Author(s):  
Richard Weber ◽  
Johan Abadie ◽  
Thomas Key ◽  
April Hixson ◽  
Paul Nordine ◽  
...  
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Aluminum Oxide ◽  
Glass Fibers ◽  
Rare Earth Oxide ◽  
Infrared Transmission ◽  
Gain Bandwidth ◽  
Oxide Composition ◽  
Equilibrium Melting Point ◽  
Erbium Doped

ABSTRACTRare-earth-aluminum oxide-composition glass fibers 5-50 μm in diameter and containing up to 50 mole % rare-earth oxide were drawn from undercooled liquids 550-650 K below the equilibrium melting point. The fibers have tensile strengths of ∼6 GPa, glass transition temperatures of ∼1150 K, and infrared transmission up to ∼5500 nm. The optical properties of erbium-doped fibers containing up to 12.5 mole % Er2O3 were investigated. The 1/e lifetime of the 4I13/2 excited state was 0.8-7 ms, decreasing with increasing Er concentration. Amplified spontaneous emission measurements indicate extremely broadband spectra, up to 135 nm (3-dB width) in 0.5 mole % fibers. Although this result is encouraging, the gain bandwidth, which has not been measured, is likely narrower. Glass fibers were crystallized by heat treatment under tension at temperatures of 1300-1900 K to form flexible, creep resistant polycrystalline monofilaments with tensile strengths up to 2.4 GPa.

Ultra-Large Unilamellar Nanosheets Efficiently Exfoliated from (Y0.95Eu0.05)2(OH)5NO3·nH2O and their Self-Assembly into Oriented Oxide Film with Enhanced Photoluminescence Properties

2014 ◽  
Vol 602-603 ◽  
pp. 1017-1020 ◽  
Author(s):  
Qi Zhu ◽  
J.G. Li ◽  
Xiao Dong Li ◽  
Xu Dong Sun
Keyword(s):  
Rare Earth ◽  
Self Assembly ◽  
Reaction System ◽  
Photoluminescence Properties ◽  
Electronic Components ◽  
High Quality ◽  
Rare Earth Nitrate ◽  
Enhanced Photoluminescence ◽  
Hexagonal Shape ◽  
Enhanced Luminescence

Two dimensional nanophosphors of high quality play an important role in the miniaturization and intelligentization of opto-electronic components. In this present work, ultra-large (30μm) single crystals of (Y0.95Eu0.05)2(OH)5NO3·nH2O layered rare earth hydroxide (LRH) with a hexagonal shape have been synthisized via autoclaving the rare-earth nitrate/NH4OH reaction system in the presence of ammonium nitrate (NH4NO3). The nitrate ions, existing in the interlayer gallery of layered rare earth hydroxide, exhibit facile exchanges with oleate anions by hydrothermal anion exchange. Furthermore, the interlayer distance can thus be expanded from ~0.9 nm for the pristine LRHs to ~3.60 nm for the intercalated ones, which are then efficiently delaminated into unilamellar nanosheets with a lateral size of 10μm and a thickness of ~1.50 nm. The obtained nanosheets are single crystaline. Highly [11 oriented, dense (Y0.95Eu0.05)2O3 phosphor films with excellent optical transparency and a greatly enhanced luminescence intensity have been constructed via self-assembly of ultra-large unilamellar LRH nanosheets, followed by proper annealing.

Highly-Quality Sodium Rare-Earth Fluoride Nanocrystals: Controlled Synthesis and Optical Properties.

ChemInform ◽  
2006 ◽  
Vol 37 (33) ◽  
Author(s):  
Hao-Xin Mai ◽  
Ya-Wen Zhang ◽  
Rui Si ◽  
Zheng-Guang Yan ◽  
Ling-dong Sun ◽  
...  
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Controlled Synthesis ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

scholarly journals Controlling the Emission Properties of Quantum Rods via Multiscale 3D Ordered Organization

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Thomas Bizien ◽  
Marie Postic ◽  
Pascale Even-Hernandez ◽  
Pascal Panizza ◽  
Cristelle Mériadec ◽  
...  
Keyword(s):  
Optical Properties ◽  
Self Assembly ◽  
Optical Response ◽  
Optically Active ◽  
Water Soluble ◽  
X Ray ◽  
Quantum Rods ◽  
X Ray Scattering ◽  
Optical Electron ◽  
Assembly Behavior

A specific organization of optically active nanoscale objects can greatly affect the optical response of a system. Here, we report the controlled modification of the fluorescent emission by the assembly of water-soluble quantum rods (QRs). Our study combines optical, electron microcopy, and X-ray scattering characterizations to reveal a correlation between the self-assembly behavior of QRs into ordered 3D-arrays and the optical properties (luminescence) of formed assemblies, where the observed optical response is highly dependent on the QR aspect ratio. Specifically, shorter, 18 nm long QRs (QR18), exhibiting a well-defined smectic packing, demonstrate an enhancement of the emission intensity accompanied by a red shift and a lifetime reduction. In contrast, 40 nm long QRs (QR40), forming a columnar phase, does not show these optical properties.

Development of a high-quality rare earth oxide modified resin-based brake material

2019 ◽  
Vol 13 (1) ◽  
pp. 50-57
Author(s):  
Kaikui Zheng ◽  
Chenghui Gao ◽  
Fushan He ◽  
Wei Jiang
Keyword(s):  
Rare Earth ◽  
Rare Earth Oxide ◽  
High Quality ◽  
Modified Resin
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