Ce3+ dopant segregation in Y3Al5O12 optical ceramics

Zhao, Wei; Anghel, S.; Mancini, C.; Amans, David; Boulon, G.; Épicier, Thierry; Shi, Yao; Feng, Xiqi; Pan, Yubai; Chani, Valery; Yoshikawa, Akira

doi:10.1016/j.optmat.2010.10.007

Cited by 77 publications

(47 citation statements)

References 9 publications

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“…We have visualized a strong Ce 3+ segregation and spatial variations of Ce 3+ content in Ce 3+ -doped Y 3 Al 5 O 12 (YAG) ceramics and Ce 3+ -doped (Gd,Y) 3 Al 5 O 12 ,between grains and grain boundaries which has been confirmed by quantitative data obtained by TEM microscopy [16,17]. The same result has been obtained for Nd 3+ -doped YAG ceramics [18].…”

Section: Scanning Electron Microscope (Sem) Measurementssupporting

confidence: 81%

“…However we should mention these data came from TEM, both conventional and High Resolution TEM, and EDX (energy dispersive X-ray) experiments conducted at the University of Lyon on thin foils classically prepared by ion beam thinning (PIPS Gatan), using a JEOL2010F field emission gun transmission electron microscope operating at 200 kV. The smaller size of the beam spot, around 2 nm, ten times smaller, yielded more valuable results on Ce 3+ -doped YAG [15,16], Yb 3+ -doped YAG and Yb 3+ -Y 2 O 3 [19]. This is the reason why here we can conclude only with a tendency of higher homogeneity of Nd 3+ ions distribution between grains and grain boundaries of Lu 2 O 3 ceramics made by SPS.…”

Section: Scanning Electron Microscope (Sem) Measurementsmentioning

confidence: 99%

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Nd3+-doped Lu2O3 transparent sesquioxide ceramics elaborated by the Spark Plasma Sintering (SPS) method. Part 1: Structural, thermal conductivity and spectroscopic characterization

et al. 2015

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Section: Scanning Electron Microscope (Sem) Measurementssupporting

confidence: 81%

Section: Scanning Electron Microscope (Sem) Measurementsmentioning

confidence: 99%

Nd3+-doped Lu2O3 transparent sesquioxide ceramics elaborated by the Spark Plasma Sintering (SPS) method. Part 1: Structural, thermal conductivity and spectroscopic characterization

et al. 2015

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“…To reduce multiple scattering events and improve performance, there has been a drive to reduce particle size. However, this has been found to increase nonradiative recombination at surfaces, reducing quantum yields [2,8]. Another issue is that rare-earth minerals are extremely dangerous to mine raising human health and ethical issues [7].…”

Section: Introductionmentioning

confidence: 99%

Surface-specific visible light luminescence from composite metal oxide nanocrystals

et al. 2015

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Low-coordinated surface elements on metal oxide nanoparticles represent the basis for a new concept of luminescent nanoparticles made of abundant, non-toxic, and thermally stable materials. This combined experimental and theoretical study describes the generation and stability of Ba-doped MgO nanoparticle surfaces and their optical absorption and luminescence dependence on Ba loading. It is demonstrated that the vapor phase growth process employed here represents a particularly robust synthesis approach for particle powders with reproducibly adjustable photoluminescence emission properties in the range between blue and yellow light. Moreover, this indepth characterization also provides an understanding of the electronic and optical characteristics of this nanoparticulate material with a so far unnoticed potential for solidstate light applications that are based on down conversion of UV light.

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“…Al antisites is smaller, other defects due to microstructure characteristics could appear [22,23]. The recorded absorption, emission under different excitation wavelengths in visible and emission kinetics under pulsed laser with 532 nm of Ce:YAG transparent ceramics, at different temperatures (10-300 K) are analyzed and a comparison with recent results on Ce:YAG is presented.…”

Section: Introductionmentioning

confidence: 99%