The Characteristics of YAG:Ce Phosphor Powder Prepared Using a NO3--Malonic Acid-NH4NO3-NH3·H2O System

Jeong, Jinan; Park, Kyung-Hwan; Lee, Dong‐Hoon; Kim, Hong-Gun; Kim, Yoo-Young

doi:10.5012/bkcs.2012.33.4.1141

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…Therefore, both the theory of these substances and their practical application are based exclusively on investigations of luminescent emission [1][2][3][4][5][6][7], diffuse reflection [8][9][10][11][12] and transmission spectra [13], excitation spectra [14][15][16][17][18] as well as on the absorption ones [19]. Since these investigations cannot provide separated registration of the parts of the scattered and absorbed light, it is not possible to calculate the main optical characteristic of powder materials -their absorption coefficient.…”

Section: Introductionmentioning

confidence: 99%

Determination of the spectral dependence for the absorption coefficient of phosphor inorganic microparticles

Khmil¹

2015

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Developed in the work has been the mathematical model of the composite film, which enables to calculate the wavelength dependence of the absorption coefficient of microcrystals in the phosphor composition. Also, developed has been a new method for determining the spectrum of the absorption coefficient for microparticles of powderlike materials. Being based on this method, obtained has been the wavelength dependence for the absorption coefficient of microparticles of inorganic phosphor ФЛЖ-7-01. At the emission peak of a blue LED (456 nm) their absorption coefficient is close to 684 cm -1 .

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Section: Introductionmentioning

confidence: 99%

Determination of the spectral dependence for the absorption coefficient of phosphor inorganic microparticles

Khmil¹

2015

Semicond. Phys. Quantum Electron. Optoelectron.

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Combined experimental-numerical identification of radiative transfer coefficients in white LED phosphor layers

et al. 2018

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Synthesis and characterization of YAG:Ce phosphors for white LEDs

Ţucureanu

Matei

Avram

2015

Opto-Electronics Review

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Worldwide commercial interest in the production of cerium doped yttrium aluminium garnet (YAG:Ce) phosphors is reflected in the widespread use of white light emitting devices. Despite of the fact that YAG:Ce is considered a “cool phosphor” it is the most important in white LED technology. This article reviews the developed techniques for producing phosphors with superior photoluminescence efficiency, including solid-state reaction, sol-gel and (co)precipitation methods. Also, by co-doping with rare earth elements, a red/blue shift is reached in the spectrum. The characteristics of YAG:Ce phosphors are investigated because the properties of the phosphors are strongly influenced by the synthesis routes and the sintering temperature treatment. After the phase analysis, morphology and emission studies of the phosphors there may be seen the conditions when the transition from the amorphous phase to the crystalline phase appears, when luminescent properties are influenced by the crystalline form, purity, average size of the particles, co-doping and so on.

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The Characteristics of YAG:Ce Phosphor Powder Prepared Using a NO₃^--Malonic Acid-NH₄NO₃-NH₃·H₂O System

Cited by 3 publications

References 20 publications

Determination of the spectral dependence for the absorption coefficient of phosphor inorganic microparticles

Determination of the spectral dependence for the absorption coefficient of phosphor inorganic microparticles

Combined experimental-numerical identification of radiative transfer coefficients in white LED phosphor layers

Synthesis and characterization of YAG:Ce phosphors for white LEDs

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