Relevant bibliographies by topics / Phosphors

Academic literature on the topic 'Phosphors'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2024

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Journal articles on the topic "Phosphors"

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Tang, An, Tao Ma, Liduo Gu, Yongtao Zhao, Junhui Zhang, Haoming Zhang, Fengxiang Shao, and Hongsong Zhang. "Luminescence properties of novel red-emitting phosphor InNb1-xPxO4:Eu3+ for white light emitting-diodes." Materials Science-Poland 33, no. 2 (June 1, 2015): 331–34. http://dx.doi.org/10.1515/msp-2015-0050.

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AbstractInNb1-xPxO4:Eu3+ red phosphors were synthesized by solid-state reaction and their luminescence properties were also studied through photoluminescence spectra. The excitation and emission spectra make it clear that the as-prepared phosphors can be effectively excited by near-ultraviolet (UV) 394 nm light and blue 466 nm light to emit strong red light located at 612 nm, due to the Eu3+ transition of 5D0 → 7F2. The luminescence intensity is dependent on phosphorus content, and it achieves the maximum at x = 0.4. Excessive phosphorus in the phosphors can result in reduction of luminescence intensity owing to concentration quenching.With the increasing content of phosphorus, the phosphors are prone to emit pure red light. This shows that the InNb1.6P0.4O4:0.04Eu3+ phosphor may be a potential candidate as a red component for white light emitting-diodes.
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Liu, Rungang, Xueting Liu, Weikai Lin, and Yingliang Liu. "Solvothermal Treatment of Micron-Sized Commercial SrAl2O4:Eu2+, Dy3+ Phosphors and One-Step Preparation of Nanophosphors for Fingerprint Imaging." Applied Sciences 14, no. 9 (May 4, 2024): 3929. http://dx.doi.org/10.3390/app14093929.

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Preparing submicron and nanoscale phosphors with good optical properties for practical applications is a challenging task for current inorganic long afterglow luminescent materials. This study utilized commercialized SrAl2O4:Eu2+, Dy3+ phosphors (SAOED) as raw materials and employed solvents with lower polarity or non-polar solvents for dynamic solvothermal treatment. The commercialized phosphor’s overall average particle size was reduced from 42.3 μm to 23.6 μm while maintaining the fluorescence intensity at 91.39% of the original sample. Additionally, the study demonstrated the applicability of the dynamic solvothermal method to most other commercialized inorganic phosphors. The experiment produced a high-brightness nano-sized phosphor with a yield of 5.64%. The average diameter of the phosphor was 85 nm, with an average thickness of 16 nm. The quantum efficiency of the phosphor was 74.46% of the original sample. The fingerprint imaging results suggest that the nano-sized phosphors have potential for practical applications.
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Nguyen Thi, Dieu An, My Hanh Nguyen Thi, and Phuc Dang Huu. "Quantum dot phosphors CaS:Ce<sup>3+</sup> and CaS:Pb<sup>2+</sup>, Mn<sup>2+</sup> for improvements of white light-emitting diodes optic characteristics." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 5 (October 1, 2022): 4782. http://dx.doi.org/10.11591/ijece.v12i5.pp4782-4789.

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<p>The goal of this study is to discover a new method that uses standard phosphors and quantum dots to improve the lighting qualities and heat manipulation of white light-emitting diodes (WLEDs). Despite the popularity as a good ingredient that offers good color rendering properties, quantum dots (QDs) have not been widely employed in the fabrication of WLEDs, particularly, the utilization of QDs-phosphor-mixed nanocomposite is limited. We propose a unique packaging design based on the research’s experimental findings. The layer of nanocomposites consisting of QDs and phosphors is horizontally positioned to the WLED for optimal lighting and heating efficiency. This study simulated and used four distinguishing white LEDs forms: mono-layer phosphorus, two double-layer remote phosphors featuring yellowish-red and yellowish-green organizations, and a triple-layer phosphor. In terms of color rendering and luminous outputs, the triple-layer phosphor configuration outperforms the other implementations, as per the finding.</p>
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Kwon, Seok Bin, Seung Hee Choi, Jung Hyeon Yoo, Seon Yeong Lee, Bo Young Kim, Ho Jung Jeong, Wan Ho Kim, et al. "Fabrication of LuAG:Ce3+ Ceramic Phosphors Prepared with Nanophosphors Synthesized by a Sol-Gel-Combustion Method." Micromachines 13, no. 11 (November 18, 2022): 2017. http://dx.doi.org/10.3390/mi13112017.

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The aim of this study was to investigate properties of ceramic phosphors fabricated using nano Lu3Al5O12:Ce3+ phosphors produced with a sol-gel-combustion method. These nano Lu3Al5O12:Ce3+ phosphors had a size of about 200 nm, leading to high density when fabricated as a ceramic phosphor. We manufactured ceramic phosphors through vacuum sintering. Alumina powder was added to improve properties. We mounted the manufactured ceramic phosphor in a high-power laser beam projector and drove it to determine its optical performance. Ceramic phosphor manufactured according to our route will have a significant impact on the laser-driven lighting industry.
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Liu, Sheng, Bei Ying Zhou, Shi Jia Gu, Lian Jun Wang, Wan Jiang, and Wei Luo. "A Promising Energy-Saving and Environmental-Friendly Lighting Device: High CRI White LED with Phosphor Materials." Materials Science Forum 848 (March 2016): 446–53. http://dx.doi.org/10.4028/www.scientific.net/msf.848.446.

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Two kinds of commercial LED phosphors (green phosphor LuAG:Ce3+ and red phosphor CaAlSiN3:Eu2+) with polymethyl methacrylate (PMMA) powders were mixed to prepare film phosphors with tunable emission peak in photoluminescence spectrum by flat vulcanizing machine under the temperature of 170 oC and pressure of 2 MPa. The physical phase, surface morphology, transmittance, luminescence spectra of samples were characterized by means of X-ray diffraction (XRD), Environmental scanning electron microscopy (ESEM), Ultraviolet-Visible (UV-Vis) spectrophotometry and Fluorescence spectrometer. The results show that the film phosphors phase was consistent with raw phosphors, phosphor particles were uniformly distributed, and fluorescence spectra with different proportions of phosphors in different position can be adjusted. Tested by HSP 3000 spectrum analyzer, the white LEDs fabricated by blue chip and composite film phosphor containing 5 wt% green phosphor and 1.5 wt.% red phosphor, which refers to the remote excitation technique, possessed color coordinate of (0.3715, 0.3280) and color rendering index (CRI) of 87 when it was driven at power of 36 V/140 mA, reaching the international advanced level.
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Zhang, Xing Hua, Zun Ming Lu, Fan Bin Meng, Long Hu, Xue Wen Xu, Jing Lin, and Cheng Chun Tang. "The Structure and Photoluminescence Properties of Ca3Si2O7: Eu2+ Phosphor." Advanced Materials Research 509 (April 2012): 192–96. http://dx.doi.org/10.4028/www.scientific.net/amr.509.192.

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A series of yellow-emitting phosphors based on a silicate host matrix, Ca3-xSi2O7: xEu2+, were prepared by solid-state reaction method. The structure and photoluminescent properties of the phosphors were investigated. The XRD results show that the Eu2+ substitution of Ca2+ does not change the structure of Ca3Si2O7 host. The SEM images display that phosphors aggregate obviously and the shape of the phosphor particle is irregular. The EDX results reveal that the phosphors consist of Ca, Si, O, and Eu elements. The Ca3-xSi2O7: xEu2+ phosphors can be excited at wavelength of 300-490 nm, which is suitable for the emission band of near ultraviolet or blue light-emitting-diode (LED) chips. The phosphors exhibit a broad emission region from 520 to 650 nm and the emission peak centered at 568 nm. The phosphor for has the strongest excitation and emission intensity, and the energy transfer style between Eu2+ ions is quadrupole-quadrupole interaction for higher concentration Eu2+ doped Ca3Si2O7 phosphor. The Ca3-xSi2O7: xEu2+ phosphors can be used as candidates for white LEDs.
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Adachi, Sadao. "Review—Photoluminescence Spectroscopy of Mn2+-Activated Phosphors: Part II. Some Representative Phosphors." ECS Journal of Solid State Science and Technology 12, no. 12 (December 1, 2023): 126004. http://dx.doi.org/10.1149/2162-8777/ad145d.

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The purpose of this review article, Part II, is to present the photoluminescence properties of Mn2+ ion in the intra-3d 5-shell electronic configuration activated in the various kinds of host materials. An analysis method presented in a separate article, Part I, are applied to the present Mn2+-activated phosphors. The characteristic photoluminescence (PL) properties for the Mn2+-activated phosphors are then discussed from a spectroscopic point of view. The phosphors considered herein can be classified into nine groups: (1) stoichiometric phosphor, (2) Mn2+-activated oxide phosphor, (3) Mn2+-activated phosphate phosphor, (4) Mn2+-activated nitride phosphor, (5) Mn2+-activated oxynitride phosphor, (6) Mn2+-activated chalcogenide phosphor, (7) Mn2+-activated halide phosphor, (8) Mn2+-activated organic−inorganic hybrid phosphor, and (9) Mn2+-activated multiple-site phosphor. The PL and PL excitation spectra are analyzed based on the theoretical modelling. Particularly, the effects of the lattice temperature on the PL intensity and luminescence lifetime are discussed in more detail. Key properties of the Mn2+-activated phosphors for use in a variety of device applications are also presented.
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Qin, Haiming, Jun Jiang, Zhaohua Luo, and Haochuan Jiang. "YAG phosphor with spatially separated luminescence centers." Journal of Materials Chemistry C 4, no. 2 (2016): 244–47. http://dx.doi.org/10.1039/c5tc03151f.

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Zhang, Ji Ming, Dong Lin Zhao, and Zeng Min Shen. "Synthesis and Luminescent Properties of Mn2+-Doped Zinc Silicate Phosphors by Sol-Gel Method." Key Engineering Materials 434-435 (March 2010): 214–16. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.214.

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Abstract. Green light emitting Mn2+-doped Zn2SiO4 (Zn2SiO4:Mn2+) phosphor nano-particles were synthesized by sol-gel method combined with a furnace firing from the sol-gel solution made with ZnO, MnCO3 and tetraethoxysilan. The influences of annealing temperatures on the microstructures and photoluminescent properties of the Zn2SiO4:Mn2+ phosphors were investigated. The structural details of the phosphors were examined through XRD and SEM. The photoluminescent properties of the Zn2SiO4:Mn2+ phosphors were characterized by excitation and emission spectra. The results indicate that the XRD patterns of the Zn2SiO4:Mn2+ phosphors exhibit a willemite structure (-Zn2SiO4). Green photoluminescence whose emission peak is located at 525 nm were observed from the synthesized phosphor particles under UV excitation. The photoluminescent mechanisms of the Zn2SiO4:Mn2+ phosphors were discussed.
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Lü, Xing Dong, Xiao Hua Liu, and Guo Sheng Gai. "Study of Organic Modification for SrAl2O4:Eu2+, Dy3+ Phosphors." Advanced Materials Research 58 (October 2008): 169–75. http://dx.doi.org/10.4028/www.scientific.net/amr.58.169.

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Methylaminopropyltrimethoxysilane (MAPS) coupling agent was used to pre-modify SrAl2O4:Eu2+, Dy3+ phosphors, and then graft methylmethacrylate (MMA) on SrAl2O4:Eu2+, Dy3+ phosphors. IR, SEM and TEM measurements showed that there is an organic encapsulation film composed of silane modified poly(methylmethacrylate) (PMMA) on phosphor surface. This organic film encapsulated on phosphor surface like dense reticulation with a thickness of 20-30 nm. The water resistance and oil absorption measurements and persistent luminescent properties showed that after being encapsulated, SrAl2O4:Eu2+, Dy3+ phosphors has much better water resistance and lower oil absorption with little loss of persistent phosphorescence. The emission intensity and afterglow lifetime of the encapsulated phosphors were reduced to 93% and 95% of the originals, respectively.
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Dissertations / Theses on the topic "Phosphors"

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Zhang, Shuo. "Phosphors and photonic crystals." Thesis, University of Greenwich, 2008. http://gala.gre.ac.uk/8404/.

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Y2WO6: RE, Y2O2S: RE, Gd2O2S: RE phosphors have been prepared using the urea homogeneous precipitation method and firing. Stokes luminescence properties of Y2WO6: RE excited with a FRED (frequency doubled argon ion) UV laser (257 nm) have been studied. The emissions have been assigned to their corresponding energy levels. Differences in the emission spectra of Y2WO6: RE, Y2O2S: RE, Gd2O2S: RE and Y2O3: RE have been attributed to the different site symmetries of the rare earth ions and to the different phonon energies of the lattices. Fine nanostructures present within butterfly wing scales have been faithfully replicated using a precursor Y2O3: Eu phosphor solution. Monodisperse polystyrene spheres and SiO2 spheres were synthesised and they were used to synthesise well ordered bare opal templates. Photonic phosphor crystals of Y2O3: Eu, Tb, Gd and Y2O3: Tm were synthesised using these templates to study the photonic band gap properties. Nano-sized Y2O3: Eu phosphors have been successfully incorporated into mono-dispersed silica spheres which have been assembled into photonic crystals. It has been observed that when light-emitting phosphors (e.g. Y2O3: Eu) and dyes (e.g. acid red dye) are incorporated into the opal structures, their emission spectra are modified when the stopbands of the opals overlap the emission bands of the light-emitting materials.
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Ranson, Robert Marcus. "Investigation into thermographic phosphors." Thesis, Nottingham Trent University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297737.

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Yan, Xiao. "Phosphors for lighting applications." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6954.

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Trivalent rare earth cations (RE3+) activated nanometre-sized Y2O2S and Gd2O2S phosphors were prepared by converting hydroxycarbonate precursor powders during a firing process. The precursors were prepared using the urea homoprecipitation method. The choice of host crystal and dopant were optimised to meet the specific requirements for practical applications in the field of lighting, X-ray detection, and displays. Parameters that affect the luminescent properties of the resulting phosphors, such as doping concentration, excitation mechanism, firing temperature, and host lattice were investigated. Tb3+ and Er3+ co-doped Y2O2S and Gd2O2S were studied for their upconversion properties under 632.8 nm red laser excitation. The intensities of UC emission were affected by both doping concentration and host lattices. Tb3+ and Er3+ co-doped Y2O2S was found to show strong downconversion from Tb3+ and upconversion from Er3+. The presence of the Er3+ cations directly affects the Tb3+ down-converting properties by acting as centres for energy transfer. The possible energy transfer between Gd3+ and Er3+ should be responsible for the different trend of Er3+ upconversion intensity in Y2O2S and Gd2O2S. It has been established that the Tb3+ and Er3+ co-doped system is superior than the Yb3+ and Er3+ co-doped one. In the latter system the presence of Yb3+ reduces the efficiency of both upconversion and downconversion emission under red laser excitation. These phosphors show potential applications in the security and anti-fraud field. The novel ZnS:Mn QDs were prepared and successfully incorporated into GaN based photonic crystal (PC) holes to efficiently produce white light. The crystal structure and luminescent properties of the ZnS:Mn QDs were investigated as well as the factors affecting the filling rate. Zn1-xCdxS:Mn QDs were also investigated. The addition of Cd cations leads to a red shift in the PL excitation spectra of the Zn1-xCdxS:Mn QDs. The crystal structures and surface properties were also affected by the presence of Cd. Monodisperse PbS QDs with particle size of ~5 nm has been obtained using a similar aqueous reaction method.
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Aubauer, Christoph. "Halogen-, Azid- und Koordinationsverbindungen des Phosphors." Diss., [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963037900.

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Furman, Joshua D. "Novel phosphors for solid state lighting." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/228686.

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Solid state white light emitting diode lighting devices outperform conventional light sources in terms of lifetime, durability, and lumens per watt. However, the capital contribution is still to high to encourage widespread adoption. Furthermore, the colour from today's devices is unsuitable for general room illumination and thus new phosphor materials are needed. This dissertation will examine the synthesis of inorganic nanoparticles and the possibility of using hybrid inorganic-organic frameworks in the search for new lighting phosphors. Nanoparticles of the oxide compound yttrium aluminium garnet were synthesized using an emulsion technique, though it was found that the high temperature processing needed for good optical properties was not compatible with maintaining nanosized particles. In terms of hybrid framework phosphors, several aspects of this new area have been explored. The mechanical and optical properties of a dense cerium oxalate formate hybrid framework compound have been investigated. Its strength was found to be nearly as great as some classical ceramic compounds, and clearly robust enough for device applications. While the photoluminescence of the cerium oxalate formate was not suitable for solid state lighting, the impressive mechanical properties evaluated are expected to be valid for a wide range of dense inorganic-organic frameworks. A novel approach to solid state lighting phosphors was introduced by using ligand-based photoluminescence in hybrid frameworks. Novel frameworks were prepared using 9,10-anthraquinone-2,3-dicarboxylic acid in combination with calcium, manganese, nickel, and zinc. These compounds show excellent photoluminescent emission for use in solid state lighting applications, although the luminescence is quenched at room temperature due to dynamic effects. The excitation, while reaching the blue part of the spectrum, falls just short of what is needed for use today's devices. To address these issues, a second class of novel framework compounds was prepared using 9-fluorenone-2,7-dicarboxylic acid in combination with calcium, strontium, barium, cadmium, and manganese. They are more rigid structures and show good luminescence at room temperature with a photoluminescent excitation spectrum extending further into the blue than the anthraquinones. Additionally, quantum yield in the calcium fluorenone is nearly double that of its parent ligand, suggesting that there is an enhancement in luminescent properties as a result its inclusion in a framework structure. An explanation for the differences in efficiency between seemingly similar compounds are drawn from their compositions, crystal structures, photoluminescence, and specific heat properties. Finally, some structural and chemical targets for future hybrid phosphor development are identified based on the relationships identified in this work.
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Park, Wounjhang. "Optical properties of thin film phosphors." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/30078.

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Stoffers, Christian. "Saturation kinetics of low voltage phosphors." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/31047.

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Ng, Ka Man. "Near-ultra-violet (NUV) excited phosphors." HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/915.

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Cheng, Pui Yan. "Vacuum ultra-violet (VUV) excited phosphors." HKBU Institutional Repository, 2006. http://repository.hkbu.edu.hk/etd_ra/701.

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Latini, Alessandro. "Inorganic Nanostructured Materials for Technological Applications." Doctoral thesis, La Sapienza, 2006. http://hdl.handle.net/11573/917353.

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Books on the topic "Phosphors"

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Lakshmanan, Arunachalam. Luminescence and display phosphors: Phenomena and applications. New York: Nova Science Publishers, 2008.

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Omanwar, S. K., R. P. Sonekar, and N. S. Bajaj. Borate Phosphors. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003207757.

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Kragh, Helge. Phosphors and phosphorus in early Danish natural philosophy. Copenhagen: Det Kongelige Danske Videnskabernes Selskab, 2003.

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M, Yen W., Shionoya Shigeo 1923-2001, and Yamamoto, Hajime, 1940 Feb. 5-, eds. Fundamentals of phosphors. Boca Raton, FL: CRC Press, 2007.

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1957-, Kitai Adrian, ed. Solid state luminescence: Theory, materials, and devices. London: Chapman & Hall, 1993.

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M, Yen W., and Weber Marvin J. 1932-, eds. Inorganic phosphors: Compositions, preparation and opticalproperties. Boca Raton: CRC Press, 2004.

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Shinde, Kartik N., S. J. Dhoble, H. C. Swart, and Kyeongsoon Park. Phosphate Phosphors for Solid-State Lighting. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34312-4.

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Shinde, Kartik N. Phosphate Phosphors for Solid-State Lighting. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

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Yen, W. M., Shigeo Shionoya, and Hajime Yamamoto. Measurements of phosphor properties. Boca Raton, FL: CRC Press/Taylor & Francis, 2007.

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G, Morozov E., Averbukh V. M, Nauchno-proizvodstvennoe obʺedinenie "Li͡u︡minofor ", and Vsesoi͡u︡znyĭ nauchno-issledovatelʹskiĭ institut li͡u︡minoforov i osobo chistykh veshchestv., eds. Sintez i svoĭstva osobo chistykh veshchestv. Stavropolʹ: Vses. nauchno-issl. in-t li͡u︡minoforov i osobo chistykh veshchestv, 1990.

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Book chapters on the topic "Phosphors"

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Yacobi, B. G., and D. B. Holt. "Phosphors." In Cathodoluminescence Microscopy of Inorganic Solids, 231–41. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-9595-0_8.

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Simulescu, Vasile, Simona Funar-Timofei, Vlad Chiriac, and Gheorghe Ilia. "Synthesis of Phosphorus-Based Phosphors." In Hybrid Phosphor Materials, 119–49. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-90506-4_5.

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Peters, T. E., R. G. Pappalardo, and R. B. Hunt. "Lamp phosphors." In Solid State Luminescence, 313–48. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1522-3_10.

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Zhuang, Weidong, Yunsheng Hu, Ronghui Liu, and Jiyou Zhong. "Oxide Phosphors." In Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications, 247–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-52771-9_8.

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Blasse, G., and B. C. Grabmaier. "Lamp Phosphors." In Luminescent Materials, 108–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-79017-1_6.

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Wong, Man-Chung, Yang Zhang, and Jianhua Hao. "Smart Phosphors." In Phosphor Handbook, 157–90. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098676-5.

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Zhuang, Yixi. "Mechanoluminescent Phosphors." In Phosphor Handbook, 365–92. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098676-12.

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You, Shihai, and Rong-Jun Xie. "Laser Phosphors." In Phosphor Handbook, 131–56. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098676-4.

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Zhang, Xizhen, and Baojiu Chen. "Glass Phosphors." In Phosphor Handbook, 521–46. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098676-17.

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Deng, Yuan, Hanlu Zhang, and Lin Dong. "Mechanoluminescent Phosphors." In Hybrid Phosphor Materials, 51–70. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-90506-4_2.

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Conference papers on the topic "Phosphors"

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Noel, B. W., H. M. Borella, W. Lewis, W. D. Turley, D. L. Beshears, G. J. Capps, M. R. Cates, J. D. Muhs, and K. W. Tobin. "Evaluating Thermographic Phosphors in an Operating Turbine Engine." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-266.

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The results of a field test in a commercial turbine engine showed that we can remotely measure the temperature of engine components in operating engines using thermographic phosphors. The remote-measurement method exploits the temperature dependence of the characteristic decay time of the laser-induced fluorescence of thermographic phosphors. This paper summarizes recent work leading up to and including a successful test of the thermographic-phosphor method in an operating turbine engine.
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Lenef, Alan, John Kelso, Maxim Tchoul, Oliver Mehl, Jörg Sorg, and Y. Zheng. "Laser-activated remote phosphor conversion with ceramic phosphors." In SPIE Optical Engineering + Applications, edited by Matthew H. Kane, Jianzhong Jiao, Nikolaus Dietz, and Jian-Jang Huang. SPIE, 2014. http://dx.doi.org/10.1117/12.2061864.

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Crim, P. R., D. G. Walker, and S. W. Allison. "Transient Thermal Measurements Using Thermographic Phosphors for Temperature Rate Estimates." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72464.

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This paper addresses the potential for predicting heat flux from thermographic phosphor measurements. Temperature can be measured using thermographic phosphors by extracting the intensity decay of the phosphor, which is temperature dependent. This measured temperature can then be used to estimate boundary heat fluxes, which is often called the inverse heat conduction problem. Heating rate can also be estimated with the use of thermographic phosphors, from which heat flux can also be determined. In this case, the solution to the inverse problem appears more stable. The purpose of this work is to demonstrate the feasibility of measuring change in decay rates and the ability to determine the first derivative of temperature from these measurements. Preliminary analysis shows that by determining dT/dt instead of temperature, a better estimate of heat flux can be made. The experiment uses a millisecond phosphor, excited by an LED pulsed at 100 Hz. The phosphor is painted on a tungsten filament, which can be heated to hundreds of degrees in under a second. The temperature change during a single pulse is significant enough to affect the decay rate, which is necessary to achieve reasonable heating rate measurement. The measurements of heating rate are used to determine the volumetric generation rate (Joule heating) and the heat transfer loss from the system by convection and radiation. Early data show that estimates from heating rate data, as opposed to temperature data, result more accurate predictions with less error.
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Hoshino, Tetsuya, Shintaro Narioka, Sadao Aoki, Masahide Itoh, and Masami Kobayashi. "Scatterometry using deep learning for analysis of oil including phosphor." In Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleopr.2022.cfp6j_04.

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Deep learning was introduced to the scatterometry of isolated particles. We applied this method to oil droplets containing phosphors and analyzed the relationship between the amount of phosphor and the emission intensity.
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Xavier, P., S. Petit, and F. Grisch. "Temperature Uncertainty Improvements of Surface Phosphor Thermometry for Imaging Applications." In Laser Applications to Chemical, Security and Environmental Analysis. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/lacsea.2022.lth3e.3.

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Temperature uncertainty improvements of surface phosphor thermometry imaging are reported, with the intensity-ratio method. Analysis of optical filters/post-processing spatial filters with Mg4FGeO6:Mn4+ thermographic phosphors results in a ≈1% temperature uncertainty between 300 and 825 K.
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Goldburt, E. T., V. A. Bolchouchine, B. N. Levonovitch, and N. P. Sochtine. "Highly efficient phosphors and phospher screens for FED displays." In Electronic Imaging '99, edited by Bruce Gnade and Edward F. Kelley. SPIE, 1999. http://dx.doi.org/10.1117/12.344635.

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Indira, P., S. Kondala Rao, and K. V. R. Murthy. "Red emitting phosphors." In INTERNATIONAL CONFERENCE ON “MULTIDIMENSIONAL ROLE OF BASIC SCIENCE IN ADVANCED TECHNOLOGY” ICMBAT 2018. Author(s), 2019. http://dx.doi.org/10.1063/1.5100448.

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Villalobos, Guillermo R., Shyam S. Bayya, Jasbinder S. Sanghera, and Ishwar D. Aggarwal. "Protectively coated phosphors." In Electronic Imaging '99, edited by Bruce Gnade and Edward F. Kelley. SPIE, 1999. http://dx.doi.org/10.1117/12.344634.

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FELDMANN, CLAUS CLEMENS. "PIGMENTATION OF CRT PHOSPHORS." In Proceedings of the 16th Course of the International School of Atomic and Molecular Spectroscopy. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812810960_0026.

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Zachau, M., D. Becker, D. Berben, T. Fiedler, F. Jermann, and F. Zwaschka. "Phosphors for solid state lighting." In Integrated Optoelectronic Devices 2008, edited by Klaus P. Streubel and Heonsu Jeon. SPIE, 2008. http://dx.doi.org/10.1117/12.760066.

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Reports on the topic "Phosphors"

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Saveleva, Viktoria. The use of a phosphor in light sources in a photo cabinet. Light sources with a phosphor in a photo cabinet using laser diodes. Intellectual Archive, July 2023. http://dx.doi.org/10.32370/iaj.2903.

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Non-thermal luminescence of a substance is called luminescence. This process occurs by absorbing excitation energy. The substance itself is called a phosphor. In chemical nature, the phosphor is divided into two groups: organic and non-organic. In fluorescent lamps and other light sources, a non-organic phosphor is used. The main purpose of using phosphor in lighting fixtures is to save energy. Another significant factor is the availability and low cost in the market. And also, the variety of colors available on the market. The use of phosphors with laser diodes is a new direction in lighting devices. It represents a huge potential for the development of innovative space lighting technologies.
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Rand, S. C. Mid-Infrared Laser Phosphors. Fort Belvoir, VA: Defense Technical Information Center, March 2001. http://dx.doi.org/10.21236/ada392894.

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Tobin, K., M. Cates, D. Beshears, J. Muhs, G. Capps, D. Smith, W. Turley, et al. Engine testing of thermographic phosphors. Office of Scientific and Technical Information (OSTI), May 1990. http://dx.doi.org/10.2172/6781610.

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Nyman, May Devan, and Lauren Elizabeth Shea Rohwer. Self-activating and doped tantalate phosphors. Office of Scientific and Technical Information (OSTI), January 2011. http://dx.doi.org/10.2172/1010419.

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Kahen, Keith. High Efficiency Colloidal Quantum Dot Phosphors. Office of Scientific and Technical Information (OSTI), December 2013. http://dx.doi.org/10.2172/1133416.

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Phillips, M. L. F., R. J. Walko, and L. E. Shea. Garnet phosphors prepared via hydrothermal synthesis. Office of Scientific and Technical Information (OSTI), May 1996. http://dx.doi.org/10.2172/231670.

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Cunningham, D., S. Allison, and D. Smith. Thermographic properties of eight blue-emitting phosphors. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/10145884.

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Summers, Chris, Hisham Menkara, and Brent Wagner. High Extraction Phosphors for Solid State Lighting. Office of Scientific and Technical Information (OSTI), September 2011. http://dx.doi.org/10.2172/1051566.

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Cunningham, D., S. Allison, and D. Smith. Thermographic properties of eight blue-emitting phosphors. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6854917.

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Setlur, Anant, Megan Brewster, Florencio Garcia, M. Christine Hill, Robert Lyons, James Murphy, Tom Stecher, et al. Optimized Phosphors for Warm White LED Light Engines. Office of Scientific and Technical Information (OSTI), July 2012. http://dx.doi.org/10.2172/1090708.

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