Photoluminescence properties in novel Ba2Y(BO3)2Cl: Bi3+ blue phosphors with various Bi3+ sites

Huang, Anjun; Yang, Zhengwen; Yu, Chengye; Chai, Zhuangzhuang; Qiu, Jianbei; Song, Zhiguo

doi:10.1016/j.matlet.2016.09.053

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…In recent few years, there has been growing great interest in Bi 3+ doped phosphors. For examples, Peng’s group reported ZnWO 4 :Bi 3+ , ScVO 4 :Bi 3+ , and La 3 BWO 9 :Bi 3+ ; − Xia’s group reported ALaTa 2 O 7 :Bi 3+ (A = K and Na); and Yang’s group reported Ba 5 SiO 4 Cl 6 :Bi 3+ and Ba 2 Y(BO 3 ) 2 Cl:Bi 3+ . , Depending on different hosts and coordination environments, the emission colors of Bi 3+ could be ultraviolet, blue, green, yellow, and even red, as the naked 6s and 6p electrons of Bi 3+ are strongly sensitive to the crystal field. − However, the long-wavelength emission of Bi 3+ is still uncommon. Bi 3+ doped orange and red-emitting phosphors are therefore highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

et al. 2020

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Recently, there has been growing interest in developing Bi3+-activated luminescence materials for optoelectronic applications. Herein, new yellow/orange-emitting ABZn2Ga2O7:Bi3+ (ABZGO, A = Ca, Sr; B = Ba, Sr) phosphors with tunable optical properties are synthesized by an alkaline earth cation substitution. When Sr2+ substitutes Ca2+ and Ba2+, the excitation wavelength has a red shift from 325 to 363 nm, matching well with the n-UV chip based white light-emitting diodes (WLEDs). CaBaZn2Ga2O7:0.01Bi3+ (CBZGO:0.01Bi3+) exhibits two evident emission peaks at 570 and 393 nm originating from the respective occupation of Ca and Ba sites by Bi3+ ions. The optical tuning of the CBZGO:Bi3+ phosphor is achieved by changing the Bi3+ doping content and excitation wavelength based on the selected site occupation. Differently, both SrBaZn2Ga2O7:0.01Bi3+ (SBZGO:0.01Bi3+) and Sr2Zn2Ga2O7:0.01Bi3+ (SZGO:0.01Bi3+) phosphors exhibit a single broad emission band, peaking at 600 and 577 nm, respectively. Two different Bi3+ sites are also verified respectively in SBZGO and SZGO hosts by the Gaussian fitting of the asymmetric PL spectra and lifetime analysis. The different luminescence behaviors of ABZGO:0.01Bi3+ phosphors should be ascribed to the synergistic effect of the centroid shift, crystal-field splitting, and Stokes shift. Moreover, the temperature-dependent PL spectra reveal that cation substitutions of Sr2+ for Ca2+ and Ba2+ can efficiently improve the thermal stability of ABZGO:0.01Bi3+ phosphors. In view of different thermal responses to various temperatures for two emission peaks of the CBZGO:0.01Bi3+ phosphor, an optical thermometer is designed and has a good relative sensitivity (S r = 1.453% K–1) at 298 K. Finally, a WLED with CRI = 97.9 and CCT = 3932 K is obtained by combining SZGO:0.01Bi3+ and BAM:Eu2+ phosphors with a 370 nm n-UV chip, demonstrating that SZGO:0.01Bi3+ is an excellent yellow-orange-emitting phosphor for n-UV WLED devices. This work stimulates the exploration of optical tuning by cation substitution to obtain remarkable luminescence materials for optical temperature sensing and WLED applications.

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Section: Introductionmentioning

confidence: 99%

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

et al. 2020

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“…In this work, the high-temperature solid-state reaction method was used to prepare the Ba 2 Gd(BO 3 ) 2 C1 sample, and for the first time, its magnetic properties and MCE were comprehensively examined. To our knowledge, homologous anion substitution is a significant approach for exploring new inorganic materials with improved characteristics. ,, Moreover, most existing researches of Ba–RE–B–O–X systems (RE = rare earth, X = halogen) are focused on Cl systems − and few explorations concentrate on F systems. Thus, the F – anion is first used for replacing Cl – anion to design a new compound with the possible chemical formula Ba 2 Gd(BO 3 ) 2 F based on the following reason: F – has small volume and low mass, which make Ba 2 Gd(BO 3 ) 2 F have a lower molecule mass, resulting in a larger MCE.…”

Section: Introductionmentioning

confidence: 99%

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Chen,

Gong,

Guo

et al. 2023

Inorg. Chem.

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A new Gd3+-containing borate Ba2Gd(BO3)2F has been successfully grown via the high-temperature solution method using BaF2-NaF-B2O3 flux. Ba2Gd(BO3)2F crystallizing in the orthorhombic space group Pnma is with lattice parameters a = 7.571(4) Å, b = 10.424(5) Å, c = 8.581(4) Å, α = β = γ = 90°, and Z = 2. Its three-dimensional framework was constructed from interesting pinwheel-like [Gd(BO3)F]∞ layers bridged by sharing [BO3]3–, which is different from the [Gd(BO3)]∞ layer in the model structure Ba2Gd(BO3)2Cl. The magnetic measurements indicated that Ba2Gd(BO3)2F has a larger magnetocaloric effect with −ΔS m,max = 27.82 J·kg–1·K–1at 2 K and 9 T than that of Ba2Gd(BO3)2Cl under the same conditions. Moreover, thermal stability, infrared spectrum (IR), and ultraviolet–visible-near-infrared diffuse reflectance spectrum were carried out to characterize the title compounds. The first-principles computations also looked into the electronic band structures, densities of states, and refractive indices.

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“…Depending on the type of crystal lattice and the excitation wavelength, the Bi 3+ is now found to have various colors, which span from UV, blue, and yellow to red light (eg, Ca 4 YO(BO 3 ) 3 :Bi 3+ (blue), LaBO 3 :Bi 3+ (UV), LuVO 4 :Bi 3+ (yellow), ScVO 4 :Bi 3+ (red), etc). In addition, tunable emissions can be also observed in the Bi 3+ ‐doped crystals, such as (Y,Lu,Sc)VO 4 :Bi 3+ , Ba 2 Y(BO 3 ) 2 Cl:Bi 3+ , X2‐Y 2 SiO 5 :Bi 3+ , (Y,Sc)(V,Nb)O 4 :Bi 3+ , Ba 5 SiO 4 Cl 6 :Bi 3+ , Ba 2 Y(BO 3 ) 2 Cl:Bi 3+ , etc. More remarkably, previous works indicated that some Bi 3+ ‐doped phosphors as the temperature increases can also exhibit the anomalous Bi 3+ photoluminescence (PL) properties that we cannot observe at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Toward temperature‐dependent Bi³⁺‐related tunable emission in the YVO₄:Bi³⁺ phosphor

et al. 2018

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Up until now, many previous works have indicated us that the photoluminescence (PL) properties of phosphors sometimes can be changed with the change in the external temperature, resulting in the anomalous PL phenomena and correlated new applications that are difficult to achieve at room temperature. In this work, we report the temperature‐dependent Bi3+‐related PL properties in the YVO4:Bi3+ phosphor. Our findings show that increasing the temperature from 10 to 300 K enables manipulating the energy interaction from VO43− groups to Bi3+, thereby leading to the temperature‐induced color tuning from blue (0.183, 0.212) to yellow (0.418, 0.490). Upon this heating process, we further reveal that the dynamic Bi3+ luminescence has experienced a regular transition from double‐exponential to single‐exponential decay, which results in the decrease in the average Bi3+ lifetime from 122.606 to 0.376 μs. Discussions on the PL results imply that the tunable PL observations are due to the interplay of temperature‐dependent energy transfer from VO43− groups to Bi3+ and redistribution of the excited 3P0 and 3P1 states of Bi3+ upon the thermal stimulation. This work not only presents the temperature‐triggered Bi3+ tunable properties in the well‐studied YVO4 host lattice but also can provide new insights into revealing Bi3+‐related PL mechanism in other Bi3+‐doped photonic materials in the future and, in the meanwhile, gives some directive ideas for us to explore previously unnoticed applications for rare‐earth (RE; eg, Eu3+, Pr3+, Tb3+, Eu2+, Er3+, etc) and other non‐RE (eg, Bi3+, Mn4+, Mn2+, Cr3+, etc) doped phosphors.

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Photoluminescence properties in novel Ba2Y(BO3)2Cl: Bi3+ blue phosphors with various Bi3+ sites

Cited by 13 publications

References 14 publications

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Toward temperature‐dependent Bi³⁺‐related tunable emission in the YVO₄:Bi³⁺ phosphor

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Photoluminescence properties in novel Ba2Y(BO3)2Cl: Bi3+ blue phosphors with various Bi3+ sites

Cited by 13 publications

References 14 publications

Yellow/Orange-Emitting ABZn2Ga2O7:Bi3+(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Yellow/Orange-Emitting ABZn2Ga2O7:Bi3+(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba2Gd(BO3)2X (X = F, Cl)

Toward temperature‐dependent Bi3+‐related tunable emission in the YVO4:Bi3+ phosphor

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Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Toward temperature‐dependent Bi³⁺‐related tunable emission in the YVO₄:Bi³⁺ phosphor