Relevant bibliographies by topics / Rare earth phosphors

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Academic literature on the topic 'Rare earth phosphors'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Rare earth phosphors"

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Baig, Nahida, N. S. Dhoble, N. S. Kokode, and S. J. Dhoble. "Photoluminescence Properties of Eu3+ and Ce3+ Activated Calcium Chlorophosphate Via Combustion Synthesis Method." Oriental Journal of Physical Sciences 1, no. 1-2 (August 24, 2016): 10–15. http://dx.doi.org/10.13005/ojps01.0102.03.

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Calcium chlorophosphate (Ca2PO4Cl) phosphors, activated by rare earth ions Eu3+ and Ce3+ were prepared by urea assisted combustion synthesis technique and their characterization and luminescent properties were studied. The synthesized phosphors were investigated by powdered XRD, SEM and Photoluminescence characterization (PL) methods. PL excitation spectra of Ca2PO4Cl:Eu3+/Ce3+ phosphor exhibit narrow bands in the near ultra violet (n-UV) range, and the PL emission spectra of Ca2PO4Cl: Eu3+/Ce3+ phosphor shows sharp narrow bands typical of rare earth ions. The bands observed in the PL emission and excitation spectra of Ca2PO4Cl: Eu3+/Ce3+ phosphors can be ascribed to the electronic transitions within 4f configurations of rare earth ions. The excitation peaks for Ca2PO4Cl: Eu3+ is in n-UV range. The obtained results suggest that these phosphors may be favorable for lamp industry.
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Vlasenko, A. B., and V. V. Bakhmetyev. "Synthesis of rare-earth nanosized phosphors using microwave processing." Journal of Physics: Conference Series 2056, no. 1 (October 1, 2021): 012049. http://dx.doi.org/10.1088/1742-6596/2056/1/012049.

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Abstract Nanomaterials find permanently extending applications in various areas of life. In particular, nanosized phosphors can be used as pharmaceutical carriers capable of emitting ultraviolet or visible light that activates a photosensitizer, thus significantly expanding the possibilities of photodynamic therapy in the treatment of oncological, bacterial and viral diseases. The conditions required for the use of nanosized phosphors in medicine include their fine dispersion and effective luminescence in the red region of visible light spectrum upon stimulation by X-ray radiation of the range accepted for medical applications, particularly for diagnostic and therapeutic purposes in many diseases. The aim of this work was to study the effect of microwave treatment of Y2O3:Eu phosphors prepared by hydrothermal synthesis in ethylene glycol at 230 °C for 6 hours, involving the decomposition of mixed acetate. In order to reduce the aggregation and growth of the resulting particles, Aerosil A300 with average particle size 7 nm was added to the reaction mixture in the course of hydrothermal synthesis in the ratio 1:1 relating to the obtained phosphor. The microwave treatment was carried out at 800 °C for 5 minutes. The developed method provided Y2O3:Eu phosphor samples featuring with increased luminescence intensity in the region 610…700 nm compared to similar phosphors earlier prepared using the rapid thermal annealing (RTA) procedure.
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Shinde, K. N., and S. J. Dhoble. "Luminescence in Rare Earth Activated AlPO4 Phosphor." Advanced Materials Research 306-307 (August 2011): 171–75. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.171.

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Rare earth activated AlPO4 phosphors were synthesized by solid-state reactions and the completion of the synthesis was confirmed by X-ray diffraction (XRD) pattern. Under near-ultraviolet (nUV) light, the Eu3+ emission in AlPO4 consists of the transitions from 5D0 to 7FJ shows orange/red region and the AlPO4 :Dy3+ phosphor shows an efficient blue and yellow band emissions, which originates from the 4F9/26H15/2 and 4F9/26H13/2 transitions of Dy3+ ion. The excitation spectra of the phosphors are extending from 300 to 400 nm, which are characteristics of nUV excited LED. The effect of the Eu3+ and Dy3+ concentration on the luminescence properties of AlPO4 phosphors is also studied.
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Suresh, K., K. V. R. Murthy, Ch Atchyutha Rao, and N. V. Poornachandra Rao. "Rare Earth Doped Alkali Earth Sulfide Phosphors for White-Light LEDs." ISRN Condensed Matter Physics 2011 (January 19, 2011): 1–3. http://dx.doi.org/10.5402/2011/392917.

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CaS:Eu and SrS:Eu phosphors were synthesized by solid-state reaction. The effects of doping concentrations on luminescent properties of phosphors are investigated. The samples are excited using electroluminescent blue light emitting diode (460 nm) to examine them as potential coating phosphors for white-light LEDs. The excitation and emission spectra of these phosphors are broadband which can be viewed as the typical emission of Eu2+ ascribed to the 4f–5d transitions. Because of their broadband absorption in the region 400–630 nm, these phosphors meet the application requirements for blue LED chips. A white-light LED was fabricated through the integration of a 460 nm chip. The results indicate that these phosphors can be considered as candidates for the application in blue LED chip-based white-light LEDs.
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Xiong, H. H., C. Zhu, X. Zhao, Z. Q. Wang, and H. Lin. "Rare Earth Doped Lanthanum Calcium Borate Polycrystalline Red Phosphors." Advances in Materials Science and Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/819057.

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Single-phased Sm3+doped lanthanum calcium borate (SmxLa2−xCaB10O19, SLCB,x=0.06) polycrystalline red phosphor was prepared by solid-state reaction method. The phosphor has two main excitation peaks located at 398.5 nm and 469.0 nm, which are nicely in accordance with the emitting wavelengths of commercial near-UV and blue light emitting diode chips. Under the excitation of 398.0 nm, the dominant red emission of Sm3+in SLCB phosphor is centered at 598.0 nm corresponding to the transition of4G5/2 → 6H7/2. The Eu3+fluorescence in the red spectral region is applied as a spectroscopic probe to reveal the local site symmetry in the host lattice and, hence, Judd-Ofelt parametersΩt (t=2, 4)of Eu3+in the phosphor matrix are derived to be3.62×10-20and1.97×10-20 cm2, indicating a high asymmetrical and strong covalent environment around rare earth luminescence centers. Herein, the red phosphors are promising good candidates employed in white light emitting diodes (LEDs) illumination.
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Luitel, Hom Nath, Rumi Chand, Toshio Torikai, Mitsunori Yada, and Takanori Watari. "Rare Earth FreeZn3V2O8Phosphor with Controlled Microstructure and Its Photocatalytic Activity." International Journal of Photoenergy 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/410613.

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Microsphere of rare earth free phosphor,Zn3V2O8, with broadband yellowish white emission was synthesized by combustion route and compared with the hydrothermal, sol-gel, and solid state reaction methods. The phosphor samples were characterized by X-ray diffraction and scanning electron microscopy. UV-visible absorption and photoluminescence (PL) emission and excitation spectra were investigated for these phosphors.Zn3V2O8phosphor containing 10 mol% of H3BO3flux exhibited enhanced PL emission showing broadband from 450 nm to 750 nm. Effect of stoichiometry of Zn and V on the host lattice and its effect on the PL emission spectra were studied. Series of Mg3V2O8,Ca3V2O8, and Sr3V2O8phosphors were also synthesized and compared to theZn3V2O8phosphor in terms of PL emission and internal quantum yield, and it was found thatZn3V2O8is the most efficient phosphor among the other phosphors studied with quantum yield of 60%. The visible light irradiated photocatalytic activity of these phosphors was investigated and it was found that the hydrothermalZn3V2O8exhibited enhanced activity.
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Ronda, C. R., T. Jüstel, and H. Nikol. "Rare earth phosphors: fundamentals and applications." Journal of Alloys and Compounds 275-277 (July 1998): 669–76. http://dx.doi.org/10.1016/s0925-8388(98)00416-2.

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8

Yen, Clive H., and Rui Cheong. "Application of Green Solvents for Rare Earth Element Recovery from Aluminate Phosphors." Minerals 11, no. 3 (March 10, 2021): 287. http://dx.doi.org/10.3390/min11030287.

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Two processes applying green solvents for recovering rare earth elements (REEs) from different types of aluminate phosphors are demonstrated in this report. For magnesium aluminate-type phosphors, a pretreatment with peroxide calcination was implemented first, and then followed by a supercritical fluid extraction (SFE) process. Supercritical carbon dioxide (sc-CO2) provides an effective and green medium for extracting REEs from dry materials. With the addition of a complex agent, tri-n-butyl phosphate-nitric acid complex, highly efficient and selective extraction of REEs using supercritical carbon dioxide can be achieved. The highest extraction efficiency was 92% for europium from the europium doped barium magnesium aluminate phosphor (BAM), whereas the highest extraction selectivity was more than 99% for the REEs combined from the trichromatic phosphor. On the other hand, for strontium aluminate type phosphors, a direct acid leaching process is suggested. It was found out that acetic acid, which is considerably green, could have high recovery rate for dysprosium (>99%) and europium (~83%) from this strontium aluminate phosphor materials. Nevertheless, both green processes showed promising results and could have high potential for industrial applications.
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Xie, Rong Jun, Mamoru Mitomo, and Naoto Hirosaki. "Luminescence Properties of Rare-Earth Doped α-SiAlONs." Key Engineering Materials 317-318 (August 2006): 797–802. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.797.

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Rare-earth doped Ca-α-SiAlON phosphors, with the compositions of (Ca1-3/2xREx)m/2Si12-m-nAlm+nOnN16-n (RE = Ce, Sm, Eu, Tb, Yb and Dy, 0.5 ≤ m = 2n ≤ 3.0), were prepared by reaction at 1700oC for 2h under 10 atm N2. The concentration of rare earths varied from 3 to 30 at% with respect to Ca. The photoluminescence properties of the powders were investigated at room temperature. The results show that (i) strong visible emissions are observed in rare-earth doped Ca-α-SiAlONs; (ii) the emission properties can be optimized by tailoring the activator concentration and the composition of the α-SiAlON host crystal; and (iii) the yellow Eu2+-doped Ca-α-SiAlON phosphors can be used in warm white LEDs.
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Yang, Delong, Mingming Yu, Yunqi Zhao, Mingyu Cheng, and Guangjun Mei. "Leaching Kinetics of Y and Eu from Waste Phosphors under Microwave Irradiation." Processes 11, no. 7 (June 27, 2023): 1939. http://dx.doi.org/10.3390/pr11071939.

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Waste fluorescent powder contains a large amount of rare earth elements, which have a high value for recovery and utilization. In order to achieve the rapid and efficient leaching of rare earth elements in these waste phosphors, microwave-assisted leaching of rare earth elements Y and Eu from the waste phosphor with hydrochloric acid was studied. The maximum leaching rates of Y (99.84%) and Eu (89.82%) were obtained at 600 W microwave power, 60 min microwave radiation time at 60 °C. The leaching kinetics showed that the microwave leaching process of Y and Eu conforms to the chemical reaction control model, and the apparent activation energy is 25.30 kJ/mol and 24.78 kJ/mol. Compared with the conventional heating method, the microwave leaching process can obviously reduce the reaction activation energy, shorten the reaction time, and achieve the rapid and efficient leaching of rare earth elements in the waste phosphors.
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Dissertations / Theses on the topic "Rare earth phosphors"

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Shalav, Avi School of Photovoltaic &amp Renewable Energy Engineering UNSW. "Rare-earth doped up-converting phosphors for an enhanced silicon solar cell response." Awarded by:University of New South Wales. School of Photovoltaic and Renewable Energy Engineering, 2006. http://handle.unsw.edu.au/1959.4/24184.

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Photovoltaic solar cells can generate electricity directly from sunlight without emitting harmful greenhouse gases. This makes them ideal candidates as large scale future energy producers for the global energy economy. Ideally, solar cells should be efficient and inexpensive to compete in the global energy market. Unfortunately, a number of fundamental limitations exist for the efficiency due to fundamental loss mechanisms of the semiconductor materials used to make solar cells. One of the dominant loss mechanisms from a conventional silicon solar cell is the transparency of sub-bandgap near-infrared photons. Up-conversion is an optical process involving the sequential absorption of lower energy photons followed by luminescence of a higher energy photon. This mechanism could be exploited to minimise photovoltaic sub-bandgap losses. Rare-earth doped materials have ideal up-conversion luminescent properties and have been utilised for many near-infrared to visible applications. This thesis investigates the near-infrared to near-infrared up-conversion processes required for the sub-bandgap photon utilisation within a silicon photovoltaic device. Various sodium yttrium fluoride phosphors doped with rare-earths were characterised theoretically and experimentally. Erbium doped phosphors were found to be ideal for single wavelength power dependent investigations for the non-linear up-conversion processes. The radiative and non-radiative rates of various erbium doped sodium yttrium fluoride phosphors have been approximated and compared with experimental photoluminescence results. These phosphors have been applied to the rear of a bi-facial silicon solar cell and an enhancement in the near-infrared region has been demonstrated. An external quantum efficiency close to 3.4% was measured at 1523nm under 6mW laser excitation. The non-linear dependence on incident pump power has been investigated along with the dominant up-conversion mechanisms involved. It can be concluded that up-conversion phosphors can enhance the near-infrared spectral response of a silicon device. These phosphors have high luminescent efficiencies once up-conversion occurs, but suffer from poor infrared absorption and low up-conversion efficiencies. The results from this study show that relatively high doping levels of selected rare-earths into low phonon energy crystals can improve the absorption and luminescent properties of the phosphor.
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Gao, Yuan. "Design of rare-earth-doped inorganic phosphors and luminescence enhancement by plasmonic effects." Kyoto University, 2020. http://hdl.handle.net/2433/253288.

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Nishiura, Shotaro. "Preparation and Optical Properties of Rare Earth Doped Ceramic Phosphors for White Light Emitting Diode." Kyoto University, 2013. http://hdl.handle.net/2433/175019.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(人間・環境学)
甲第17670号
人博第637号
新制||人||153(附属図書館)
24||人博||637(吉田南総合図書館)
30436
京都大学大学院人間・環境学研究科相関環境学専攻
(主査)教授 田部 勢津久, 教授 杉山 雅人, 教授 加藤 立久
学位規則第4条第1項該当
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Katayama, Yumiko. "Optical and photo-electric studies on quantum cutting and persistent luminescent phosphors doped with rare-earth and transition-metal ions." Kyoto University, 2014. http://hdl.handle.net/2433/188818.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(人間・環境学)
甲第18380号
人博第693号
新制||人||166(附属図書館)
25||人博||693(吉田南総合図書館)
31238
京都大学大学院人間・環境学研究科相関環境学専攻
(主査)教授 田部 勢津久, 教授 加藤 立久, 教授 杉山 雅人, 教授 森本 芳則, 教授 山本 行男
学位規則第4条第1項該当
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Legentil, Paul. "Développement de poudres hybrides "Hydroxydes Doubles Lamellaires-luminosphores" sans terres rares. Intégration dans des revêtements composites compatibles avec des sources d'excitation LED." Thesis, Université Clermont Auvergne‎ (2017-2020), 2020. http://www.theses.fr/2020CLFAC013.

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Ces travaux de thèse ont pour ambition de proposer des solutions alternatives, aux luminophores avec terres rares, offrant des performances convenables pour des applications dans des dispositifs à LED comme l’éclairage mais également la visualisation ou encore le marquage ou la signalétique. Nous nous sommes intéressés à des luminophores organiques mais également inorganiques tels que les quantum dots (QD). Le problème majeur de ces familles de luminophores est leur instabilité sous contrainte thermique et/ou photonique. Aussi, afin de pallier ce problème nous avons choisi d’utiliser des matériaux inorganiques plaquettaires de type « hydroxyde doubles lamellaires » (HDL) comme matrice hôte du luminophore. Les luminophores étudiés sont la fluorescéine, la sulforhodamine B et des quantum dots InP/ZnS. Plusieurs techniques expérimentales ont été utilisées afin de caractériser leurs propriétés structurales et morphologiques (DRX, SAXS, IR, MEB, MET…). Les propriétés optiques ont également été enregistrées (émission, excitation, rendement quantique de photoluminescence, déclins…). Ces travaux ont mis en évidence la plus-value de la matrice HDL qui permet de reproduire un effet de solvatation pour le luminophore organique ou QD dans une matrice solide et de retrouver des propriétés d’émission semblables à celles de ces luminophores en solution diluée. La dispersion dans une matrice silicone est également favorisée et la stabilité de ces revêtements composites (HDL-Luminophore/silicone) sous différentes contraintes est nettement améliorée
These works have the ambition to offer alternative solutions to phosphors with rare-earth elements, displaying suitable performance for LED devices applications as well as signage or display applications. We have been interested in organic as well as inorganic phosphors such as quantum dots (QD). The main problem encountered with these compounds is their relative instability under thermal and/or photonic stresses. Thus, in order to overcome this issue, we decided to use inorganic materials called layered double hydroxide (LDH) as host matrix to protect these phosphors. Several experimental techniques (XRD, SAXS, IR, SEM, TEM…) have been used to characterize structural and morphological properties. Optical properties have also been recorded (emission and excitation spectra, photoluminescence quantum yields, fluorescence decay…). Using extremely small amounts of phosphors, it is demonstrated here that Zn2Al cation-based LDH tethering acts as a «solid solvent» for the dye, enabling its luminescence even in powder form. Additionally, LDH platelets are found to help the dispersion of the dye or QD in silicone to obtain homogeneous composite films, which exhibit luminescent properties. Finally, the stability of composite coatings (LDH-phosphor/silicone) under different stresses (thermal and photonic) is most often improved
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Ireland, Terry G. "Precipitation techniques and characterisation of rare earth element doped phosphor materials." Thesis, University of Greenwich, 2008. http://gala.gre.ac.uk/6195/.

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The work in this thesis had two main aims. The first aim was to study the use of a number of precipitation methods to control the size and morphology of precursor phosphor materials for potential applications in a new generation of high definition and field emission displays. The morphological and luminescent characteristics of these precursor phosphor materials were studied after they were annealed to form their respective luminescent oxides using electron microscopy and light measuring techniques. The first set of experiments presented describes the development of a range of spherical submicron europium-doped yttrium oxide phosphor particles and their optimisation for use in the aforementioned applications. A homogeneous precipitation technique exploiting a hydrothermal decomposition of urea that provides hydroxycarbonate phosphor precursor ligands is at the centre of this work. In the presence of rare earth element nitrates the hydroxycarbonate ligands form spherical phosphor precursor particles that after annealing yield the luminescent oxides. This is followed by the presentation of a novel synthetic method using a micellar phase of rare earth element chlorides, after annealing, yielding europium-doped yttrium oxide. This method produces a variety of morphologies with crystallites as small as a few nanometres and up to hundreds of nanometres. Next is described a new precipitation method using ammonia and carbon dioxide gases that are introduced in a controlled manner into a solution of rare earth element chlorides at room temperature. Rare earth element hydroxycarbonates rapidly precipitate upon supersaturation, yielding a range of morphologies and particles sizes. The second aim of the thesis was to prepare a novel range of three-dimensional photonic band gap materials composed of conventional phosphor materials.
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Ngwenya, Bryne Tendelo. "Magmatic and post-magmatic geochemistry of phosphorus and rare earth elements in carbonatites." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306803.

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This study documents the magmatic, hydrothermal and supergene mineralogy and geochemistry of phosphorus and rare earth elements in carbonatite complexes using examples from Tundulu (Malawi), Sokli (Finland), Siilinjarvi (Finland) and Kaluwe (Zambia). In carbonatites, phosphorus averages 1-2% P20S and forms the minerals fluorapatite and monazite. Hydrothermal and supergene processes enrich fluorapatite in Na and REEs through vitusite-type exchanges which lead to formation of vitusite, belovite and britholite; and in CO2 through anti-francolite substitutions. The highest rare earth element contents are found in late-stage ankerite carbonatites or similar rocks of low temperature origin (T < S(XtC) and in hydrothermally altered rocks, where they occur mainly as fluorocarbonates or carbonates. Such minerals are consistent with the REEs having been transported in form of mixed fluoride-carbonate complexes. The mineral paragenesis in hydrothermal veins suggests that different fluorocarbonates precipitated depending on the activity of Ca supplied to the fluid by the wall rocks. The various minerals are modelled to form by simple combinations of calcite (CaCO:v and bastnaesite (REEC03F) molecules. A secondary characteristic feature of these reactions is that extreme heavy rare earth enrichment occurs if the wall rocks are apatite-rich. Petrogenetic modelling using REEs suggests that carbonatites are unlikely to be derived from carbonated silicate magmas by fractional crystallisation or liquid immiscibility. These findings are supported by ex solution temperatures of about 9S0·C recorded using the calcitedolomite geothermometer for quenched lapilli from the Kaluwe carbonatite.
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Boonsin, Rachod. "Développement de luminophores sans terres rares pour l'éclairage éco-énergétique à base de diodes électroluminescentes." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22704/document.

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Les luminaires à LEDs représentent une alternative "verte" aux lampes fluorescentes et aux lampes à incandescence en répondant notamment à des critères de préservation de l'environnement : réduction de la consommation d’énergie, technologies sans mercure ni plomb et recyclables à 98%. Cependant, ces luminophores, qui sont actuellement utilisés dans les luminaires à LEDs, contiennent aujourd’hui des éléments de terres rares qui sont issus à 95% de Chine, créant de ce fait une situation de quasi-monopole et un risque réel pour le déploiement de la technologie LED dans les années à venir. Dans le cadre de cette thèse, nous nous sommes intéressés au développement de luminophores sans terres rares pour produire de la lumière blanche dans les luminaires à LEDs. Au cours de ces travaux nous avons étudié trois types de luminophores sans terres rares: luminophores organiques, luminophores hybrides (organiques-inorganiques) et quantum dots (QDs) type cœur-coquille. Les études optiques réalisées sur ces luminophores sous excitation LEDs UV ou bleue nous ont permis de déterminer leurs caractéristiques colorimétriques (IRC, T(K), PLQY(%)) et de mettre en évidence l’évolution de leurs performances dans les conditions d’usage. Pour obtenir une lumière la plus proche du blanc idéal, les luminophores les plus performants ont été sélectionnés puis mélangés en proportion adéquate avec une matrice polymère de type silicone pour conduire à un film composite offrant une émission blanche de qualité sous excitation LEDs UV ou bleue. Un autre volet de ce travail a été dédié à l’étude de la stabilité de ces luminophores (films ou poudres) en fonction du temps et de la température. L’influence de ces paramètres sur les propriétés optiques a été déterminée. Des performances optiques de 30% ont été enregistrées avec des caractéristiques photométriques intéressantes. Aussi, l’ensemble des résultats obtenus montre l’intérêt de poursuivre ces études sur les luminophores sans terres rares qui offrent des propriétés optiques intéressantes. Même s'ils ne concurrencent pas encore les luminophores inorganiques pour l’application « éclairage grand public », les luminophores sans terres rares peuvent déjà se positionner sur d’autres secteurs d’activité comme par exemple : l’éclairage d’ambiance, la signalétique le marquage anti-contrefaçons
Lighting technologies based on light-emitting diodes have become an alternative solution over the obsolete technologies (fluorescent lamps and incandescent lamps) due to their positive key criteria of environmental conservation: reduction of energy consumption and mercury/lead-free with 98% recycling technologies. However, the rare-earth elements, which are currently used in LED lightings, are produced by China at about 95%, thereby creating a monopoly situation on the rare-earth elements’ market and also a risk to the deployment of LED technologies in coming years. In this work, we have been interested in the development of rare-earth-free luminescent materials for LED lighting applications in order to produce a white light emission. Three kinds of rare-earth-free luminescent materials have been investigated: organic phosphors, hybrid (organic-inorganic) phosphors and core-shell quantum dots (QDs). The optical studies of these phosphors recorded upon UV and/or blue excitations allow us to determine their colorimetric parameters (CRI, T(K), PLQY(%)) and to demonstrate their optical performances for use in lighting devices. In order to yield a color emission close to ideal white light, the best phosphors were selected and then introduced by mixing them in appropriate proportions into silicone polymers. Another part of this work was devoted to the studies of stability of phosphors (films or powders) under operating conditions of LEDs, moreover, variation of their optical properties as a function of time and temperature were also determined. The optical performances about 30% have been recorded with some interesting colorimetric parameters. Although these materials have presented lower photoluminescence properties compared with commercial rare-earth based inorganic phosphors for “public lighting” applications, they can already be positioned on other luminescent sectors such as indoor lighting, signage anti-counterfeit marking
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Yamane, H., T. Kawano, K. Tatsumi, S. Muto, and Y. Fujimichi. "Quantitative determination of site occupancy of multi-rare-earth elements doped into Ca2SnO4 phosphor by electron channeling microanalysis." Elsevier, 2010. http://hdl.handle.net/2237/20789.

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Zhang, Lilu. "Synthesis and chemistry of lanthanide complexes with phosphorus ylides, amides or porphyrinate ligands, and of transition metal complexes with polydentate ligands." HKBU Institutional Repository, 1999. http://repository.hkbu.edu.hk/etd_ra/182.

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Books on the topic "Rare earth phosphors"

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Bogusława, Jeżowska-Trzebiatowska, Legendziewicz J, and Stręk W, eds. Rare earths spectroscopy: Proceedings of the International Symposium on Rare Earths Spectroscopy, Wrocław, Poland, September 10-15, 1984. Singapore: World Scientific Pub., 1985.

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Lumpur), International Symposium on Rare Earths (2012 Kuala. Proceedings: International Symposium on Rare Earths, 7th May 2012 at Kuala Lumpur and Intellectual Discourse : Green Opportunities in Rare Earth Industries, 9th May 2012 at Kuala Lumpur. Kuala Lumpur: Akademi Sains Malaysia, 2012.

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Qiang, Su, ed. Proceedings of the Second International Symposium on Rare Earths Spectroscopy, Changchun, P.R. China, September 9-14, 1989. Singapore: World Scientific, 1990.

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G, Potter B., Bruce Allan J, and American Ceramic Society Meeting, eds. Synthesis and application of lanthanide-doped materials. Westerville, Ohio: American Ceramic Society, 1996.

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Rare-Earth-activated Phosphors. Elsevier, 2022. http://dx.doi.org/10.1016/c2020-0-03103-8.

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Dhoble, Sanjay J., Vikas Dubey, Neha Dubey, Marta Michalska Domanska, and M. Jayasimhadri. Rare Earth Activated Phosphors: Chemistry and Applications. Elsevier, 2022.

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Dhoble, Sanjay J., Vikas Dubey, Neha Dubey, Marta Michalska Domanska, and M. Jayasimhadri. Rare Earth Activated Phosphors: Chemistry and Applications. Elsevier, 2022.

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Luminescence: Theory and Applications of Rare Earth Activated Phosphors. de Gruyter GmbH, Walter, 2021.

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Singh, Vijay, Vikas Dubey, Ratnesh Tiwari, and María Elena Zayas Saucedo. Luminescence: Theory and Applications of Rare Earth Activated Phosphors. de Gruyter GmbH, Walter, 2021.

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Singh, Vijay, Vikas Dubey, Ratnesh Tiwari, and María Elena Zayas Saucedo. Luminescence: Theory and Applications of Rare Earth Activated Phosphors. de Gruyter GmbH, Walter, 2021.

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Book chapters on the topic "Rare earth phosphors"

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Mushtaq, Umer, Irfan Ayoub, Nisar Hussain, Vishal Sharma, Hendrik C. Swart, and Vijay Kumar. "Luminescence Properties of Rare-Earth-Doped CaO Phosphors." In Advanced Materials for Solid State Lighting, 149–76. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4145-2_6.

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Withnall, Robert, and Jack Silver. "Physics of Light Emission from Rare Earth-Doped Phosphors." In Handbook of Visual Display Technology, 1567–76. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-14346-0_68.

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Withnall, Robert, and Jack Silver. "Physics of Light Emission from Rare Earth-Doped Phosphors." In Handbook of Visual Display Technology, 1–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-35947-7_68-2.

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Withnall, Robert, and Jack Silver. "Physics of Light Emission from Rare-Earth Doped Phosphors." In Handbook of Visual Display Technology, 1019–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-79567-4_68.

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Eduafo, Patrick M., Mark L. Strauss, and Brajendra Mishra. "Experimental Investigation of Recycling Rare Earth Metals from Waste Fluorescent Lamp Phosphors." In Rare Metal Technology 2015, 253–59. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093244.ch29.

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Eduafo, Patrick M., Mark L. Strauss, and Brajendra Mishra. "Experimental Investigation of Recycling Rare Earth Metals from Waste Fluorescent Lamp Phosphors." In Rare Metal Technology 2015, 253–59. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48188-3_29.

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Tamboli, Sumedha, Govind B. Nair, S. J. Dhoble, and H. C. Swart. "Versatile Applications of Rare-Earth Activated Phosphate Phosphors: A Review." In Luminescent Materials in Display and Biomedical Applications, 13–40. First. | Boca Raton : CRC Press, Taylor & Francis Group, [2021]: CRC Press, 2020. http://dx.doi.org/10.1201/9780429025334-2.

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Wang, Jing, Xuejie Zhang, and Qiang Su. "Rare Earth Solar Spectral Convertor for Si Solar Cells." In Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications, 139–66. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1590-8_5.

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Strauss, Mark L., Brajendra Mishra, and Gerard P. Martins. "Selective Reduction and Separation of Europium from Mixed Rare-Earth Oxides from Waste Fluorescent Lamp Phosphors." In Rare Metal Technology 2017, 31–36. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51085-9_3.

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Strauss, Mark L., Brajendra Mishra, and Gerard P. Martins. "Selective Reduction and Separation of Europium from Mixed Rare-Earth Oxides Recovered from Waste Fluorescent Lamp Phosphors." In Rare Metal Technology 2018, 67–76. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72350-1_6.

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Conference papers on the topic "Rare earth phosphors"

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Gordeev, Egor V., Maxim A. Mashkovtsev, Maria A. Berseneva, and Dmitry O. Polivoda. "Organic-inorganic composite phosphors based on rare earth elements." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN MECHANICAL AND MATERIALS ENGINEERING: ICRTMME 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0018375.

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Brixner, L., R. S. Holland, R. E. Kellogg, D. Mickish, S. H. Patten, and W. Zegarski. "Low Print-Through Technology With Rare Earth Tantalate Phosphors." In Medical Imaging and Instrumentation '85, edited by James A. Mulvaney. SPIE, 1985. http://dx.doi.org/10.1117/12.949479.

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Patel, Darayas N., Avery Blockmon, Vanesa Ochieng, Sergey S. Sarkisov, Abdalla M. Darwish, and Avedik S. Sarkisov. "Nano-photonic chemical sensor using rare-earth upconversion phosphors." In SPIE OPTO, edited by Shibin Jiang and Michel J. F. Digonnet. SPIE, 2017. http://dx.doi.org/10.1117/12.2248548.

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Winnacker, A. "Physics and application of x-ray storage phosphors." In Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare Earth and Transitional Ions, edited by Alexander I. Ryskin and V. F. Masterov. SPIE, 1996. http://dx.doi.org/10.1117/12.229139.

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Jakathamani, S., O. Annalakshmi, and M. T. Jose. "Thermoluminescent properties of rare earth doped lithium strontium borate phosphors." In 9TH NATIONAL CONFERENCE ON THERMOPHYSICAL PROPERTIES (NCTP-2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5031742.

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Tawalare, P. K., V. B. Bhatkar, R. A. Talewar, C. P. Joshi, and S. V. Moharil. "Rare earth activated NaY (MoO4)2 phosphors for NIR emission." In 2ND INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5032784.

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Psuja, Piotr, Dariusz Hreniak, and Wieslaw Strek. "Rare-Earth Doped Nanocrystalline Phosphors for Field Emission Display Application." In 2006 International Students and Young Scientists Workshop - Photonics and Microsystems. IEEE, 2006. http://dx.doi.org/10.1109/stysw.2006.343669.

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Carrillo-Betancourt, Rodolfo A., and Juan Hernández-Cordero. "Polymer coatings with rare-earth activated phosphors for optical fiber fluorosensors." In Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XIX, edited by Wounjhang Park, André-Jean Attias, and Balaji Panchapakesan. SPIE, 2022. http://dx.doi.org/10.1117/12.2633180.

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Nanai, Y., Y. Sakamoto, and T. Okuno. "Luminescence Properties of Rare Earth-Doped Thiosilicate Phosphors on Silicon Substrate." In 2012 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2012. http://dx.doi.org/10.7567/ssdm.2012.ps-7-16.

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Creasey, Jonathan P., and Glenn C. Tyrrell. "Time-resolved photoluminescence and x-ray luminescence studies on rare-earth oxysulfide phosphors." In Symposium on Integrated Optoelectronics, edited by Shibin Jiang. SPIE, 2000. http://dx.doi.org/10.1117/12.382848.

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Reports on the topic "Rare earth phosphors"

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Scholz, Florian. Sedimentary fluxes of trace metals, radioisotopes and greenhouse gases in the southwestern Baltic Sea Cruise No. AL543, 23.08.2020 – 28.08.2020, Kiel – Kiel - SEDITRACE. GEOMAR Helmholtz Centre for Ocean Research Kiel, November 2020. http://dx.doi.org/10.3289/cr_al543.

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Abstract:
R/V Alkor Cruise AL543 was planned as a six-day cruise with a program of water column and sediment sampling in Kiel Bight and the western Baltic Sea. Due to restrictions related to the Covid-19 pandemic, the original plan had to be changed and the cruise was realized as six oneday cruises with sampling in Kiel Bight exclusively. The first day was dedicated to water column and sediment sampling for radionuclide analyses at Boknis Eck and Mittelgrund in Eckernförde Bay. On the remaining five days, water column, bottom water, sediment and pore water samples were collected at eleven stations covering different types of seafloor environment (grain size, redox conditions) in western Kiel Bight. The data and samples obtained on cruise AL543 will be used to investigate (i) the sedimentary cycling of bio-essential metals (e.g., nickel, zinc, and their isotopes) as a function of variable redox conditions, (ii) the impact of submarine groundwater discharge and diffusive benthic fluxes on the distribution of radium and radon as well as greenhouse gases (methane and nitrous oxide) in the water column, and (iii) to characterize and quantify the impact of coastal erosion on sedimentary iron, phosphorus and rare earth element cycling in Kiel Bight.
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Microbes and Climate Change - Science, People & Impacts. American Society for Microbiology, April 2022. http://dx.doi.org/10.1128/aamcol.nov.2021.

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Climate change is unarguably a critical existential threat to humanity in the 21st century. As the most abundant organisms on Earth, microorganisms make considerable contributions to and are greatly affected by a changing climate. Microbes are major drivers of elemental cycles (such are carbon, nitrogen and phosphorus), important producers and consumers of greenhouse gases, and pertinent pathogens of humans, animals and plants. While the threat of climate change looms large, conversations about the relationship between it and microorganisms are still rare outside of the microbial sciences community. To understand fully how our climate may change in the future, it is important to learn how a changing climate will impact microbes and their relationships with humans and their environment, as well as incorporate microbial processes into climate models. This report is based on the deliberations of experts who participated in a colloquium on Nov. 5, 2021 organized by the American Academy of Microbiology, the honorific leadership group and think tank within the American Society for Microbiology. These experts came from diverse disciplines and sectors and provided multifaceted perspectives and insights. Over the course of the discussion, the group made several major recommendations for academic, policy, and market partners to drive innovation for microbe-driven climate change solutions that support human well-being.
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