VUV excitation properties of LnAl 3 B 4 O 12 :Re (Ln=Y, Gd; Re=Eu, Tb)

You, Hongpeng; Hong, Guangyan; Zeng, Xiangfeng; Kim, C.-H; Pyun, Chong‐Hong; Yu, Bing; Bae, Hyun‐Sook

doi:10.1016/s0022-3697(00)00192-x

Cited by 44 publications

(11 citation statements)

References 14 publications

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“…This band makes up of shoulders at the shorter wavelength side and two relatively narrow peaks at the longer wavelength one. In YAl3(BO3)4 absorption of the BO3 groups was identiÿed in 120-160 nm (You Hongpeng et al, 2000). We suppose that an intense peak at 173 nm (57 800 cm −1 ) is due to the transfer of one electron from the oxygen 2p 6 orbital to the partially ÿlled 4f shell of Dy 3+ ion.…”

Section: Resultsmentioning

confidence: 96%

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4:Dy3+ (YAB:Dy) crystal

Dominiak‐Dzik

Ryba‐Romanowski

Kovács

et al. 2004

Radiation Measurements

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Section: Resultsmentioning

confidence: 96%

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4:Dy3+ (YAB:Dy) crystal

Dominiak‐Dzik

Ryba‐Romanowski

Kovács

et al. 2004

Radiation Measurements

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“…Hoefdraad , also reported the shorter the bond length Eu−L, the shorter the wavelength of the CT band position will be. Except for the bond length, some other research groups studied other possible factors influencing the position of the CT band, such as the covalency or ionicity, the coordinate number, the potential field of the coordinate ions, the standard cation oxidation potential, and so forth. All of these studies help to reveal the origin of CT, but a quantitative explanation of the CT energy is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Dependence of Charge Transfer Energy on Crystal Structure and Composition in Eu³⁺-Doped Compounds

Zhang

2006

J. Phys. Chem. B

116

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We report a method for estimating the positions of charge transfer (CT) bands in Eu3+-doped complex crystals. The environmental factor (h(e)) influencing the CT energy is presented. h(e) consists of four chemical bond parameters: the covalency, the bond volume polarization, the presented charge of the ligand in the chemical bond, and the coordination number of the central ion. These parameters are calculated with the dielectric theory of complex crystals. The relationship between the experimental CT energies and calculated environmental factors was established by an empirical formula. The calculated values are in good agreement with the experimental results. Such a relationship was confirmed by detailed analysis. In addition, our method is also useful to predict the charge-transfer position of any other rare earth ion.

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“…[ 102 ] Similarly, Tb 3+ and Eu 3+ ions doped into the YA1 3 (BO 3 ) 4 phosphor are useful for green and red phosphor of VUV applications, respectively. [ 103 ] The host absorption, however, was too weak to be of use for PDP applications. Some efforts were made to enhance the VUV excited visible emission by co‐doping with Bi 3+ .…”

Section: Luminescent Mixed Borates Based On Rare Earthsmentioning

confidence: 99%

Luminescent inorganic mixed borate phosphors materials for lighting

Tawalare¹

2022

Luminescence

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The need of new materials with desirable optical properties has become important in recent years. In particular, a need has emerged for compounds having better luminescence properties in various practical applications. The introduction of rare earth ions as activators improves the luminescence properties of the compounds considerably. Boron is one of the most abundant elements in nature. It readily combines with almost all other elements. In combination with oxygen; it forms borates comprised of various anions such as BO33−, B2O54−, etc. Apart from these simple borates, several complex compositions exist involving mixed anions as well as double metal borates, due to the three‐fold, or four‐fold coordination of borate atoms. Borates intrinsically possesses characteristics that are advantageous for optical materials, which include a wide transparency range, large electronic band gap, good thermal and chemical stability, low preparative temperature, optical stability with good nonlinear characteristics, and an exceptionally high optical damage threshold. The unique crystal structure of borates determines their enhanced ultraviolet light transparency, good nonlinearity, and relatively high resistance against laser‐induced damage. Some of these complex borates have interesting luminescence properties that are covered in this review. These include double borates containing rare earths RM3(BO3)4, pentaborates LaMgB5O10, M3R2(BO3)4, where M is an alkaline earth, mixed anion borates such as aluminoborate SrAl2B2O7, silicate‐borates such as pekovite, SrB2Si2O8, haloborates, M2B5O9X, where M is an alkaline earth and X is a halogen, phosphate borates, and MBPO5, where M is an alkaline earth. Phosphors based on these compositions find use in various applications such as fluorescence lamps, colour TVs, plasma display panels, high‐intensity discharge lamps based on xenon, optically pumped solid‐state lasers, eye‐safe lasers, and X‐ray imaging.

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VUV excitation properties of LnAl 3 B 4 O 12 :Re (Ln=Y, Gd; Re=Eu, Tb)

Cited by 44 publications

References 14 publications

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4:Dy3+ (YAB:Dy) crystal

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4:Dy3+ (YAB:Dy) crystal

Dependence of Charge Transfer Energy on Crystal Structure and Composition in Eu³⁺-Doped Compounds

Luminescent inorganic mixed borate phosphors materials for lighting

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VUV excitation properties of LnAl 3 B 4 O 12 :Re (Ln=Y, Gd; Re=Eu, Tb)

Cited by 44 publications

References 14 publications

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4:Dy3+ (YAB:Dy) crystal

Effect of temperature on luminescence and VUV to visible conversion in the YAl3(BO3)4:Dy3+ (YAB:Dy) crystal

Dependence of Charge Transfer Energy on Crystal Structure and Composition in Eu3+-Doped Compounds

Luminescent inorganic mixed borate phosphors materials for lighting

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Product

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Dependence of Charge Transfer Energy on Crystal Structure and Composition in Eu³⁺-Doped Compounds