Improved luminescence behavior of YVO4:Eu3+ hollow microspheres by Ca2+ doping

Jiu, Hongfang; Jiao, Hongqian; Zhang, Lixin; Jia, Wenping; Huang, Changshui; Chang, Jianlong

doi:10.1016/j.spmi.2015.03.061

Cited by 9 publications

(2 citation statements)

References 32 publications

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“…15 On the other hand, the role of non-RE co-dopants is yet to be determined with complete certainty. 16 Consequently the effects of non-rare earth co-dopants, which are believed to be responsible for the increase of luminescence efficiency, have been the subject of recent interest. 17 Some co-dopant ions could enter into the host lattice and (i) create oxygen vacancies and/or (ii) modify the crystal field surrounding the activator.…”

Section: Introductionmentioning

confidence: 99%

Charge compensation assisted enhancement of photoluminescence in combustion derived Li⁺ co-doped cubic ZrO₂:Eu³⁺ nanophosphors

Prakashbabu

Ramalingam²,

Krishna

et al. 2016

Phys. Chem. Chem. Phys.

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Red light emitting cubic ZrEuO:Li (0-9 mol%) nanoparticles are synthesized by a low temperature, self-propagating solution combustion method using oxalyl di-hydrazide (ODH) as fuel. In this study, we report systematic investigation of the effect of lithium ion (Li) concentration on the structural properties and the photoluminescence of zirconia. With increasing lithium concentration, the crystallinity of the samples increases and the lattice strain decreases. The higher crystallinity is likely due to charge compensation achieved by replacing one Zr ion by a Eu and a Li ion. Scanning electron micrographs (SEM) reveal a mesoporous structure characteristic of combustion derived nanomaterials. Photoluminescence (PL) spectra show that the intensity of the red emission (606 nm) is highly dependent on Li ion concentration. Furthermore there is a promising enhancement in the associated lifetime. Upon Li doping, the PL intensity of the samples is found to increase by two fold compared to the undoped sample. Variation of PL intensity with Li concentration is attributed to the differences in probability of non-radiative recombination (relaxing). Intensity parameters (Ω, Ω) and radiative properties such as transition rates (A), branching ratios (β), stimulated emission cross-section (σ), gain bandwidth (σ × Δλ) and optical gain (σ × τ) are calculated using the Judd-Ofelt theory. The calculated values suggest that in optimally co-doped samples, in addition to improved crystallinity and charge compensation, the lowering of Eu site symmetry and the increase in the covalency of Eu-O bonding due to interstitial Li are responsible for the observed enhancement in PL intensity.

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Section: Introductionmentioning

confidence: 99%

Charge compensation assisted enhancement of photoluminescence in combustion derived Li⁺ co-doped cubic ZrO₂:Eu³⁺ nanophosphors

Prakashbabu

Ramalingam²,

Krishna

et al. 2016

Phys. Chem. Chem. Phys.

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show abstract

“…Therefore, a multitude of effects are devoted to design inorganic phosphor particles with well-defined size, uniform shape, and high crystallinity. To date, oceans of phosphors with various morphologies have been fabricated by different methods [7][8][9][10][11][12][13][14][15]. And it is widely accepted that one of the promising and popular strategies of shape and size control is to carefully select an appropriate organic additive with functional groups.…”

Section: Introductionmentioning

confidence: 99%

Controllable synthesis and luminescence of YPO4:Ln3+ (Ln = Eu and Sm) nanotubes

Sun

2016

J Mater Sci: Mater Electron

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YPO 4 :Ln 3? (Ln = Eu and Sm) nanotubes were synthesized by a precipitation process in the presence of SDS. The XRD results showed that all samples have a xenotime type tetragonal structure, indicating that doped rare earth ions have no influence on the phase. The SEM and TEM images showed that all samples are nanotubes. On basis of the morphology of samples and the properties of SDS, the possible formation mechanism was speculated. YPO 4 :Eu 3? and YPO 4 :Sm 3? nanotubes showed characteristic emission bands of Eu 3? and Sm 3? ions, respectively. For YPO 4 :Eu 3? /Sm 3? nanotubes, the codoping Sm 3? ions can enhance the emission intensity of Eu 3? ions.

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Photoluminescence of a novel Na3Y(VO4)2:Eu3+ red phosphor for near ultraviolet light emitting diodes application

Zhang

et al. 2016

J Mater Sci: Mater Electron

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Improved luminescence behavior of YVO4:Eu3+ hollow microspheres by Ca2+ doping

Cited by 9 publications

References 32 publications

Charge compensation assisted enhancement of photoluminescence in combustion derived Li⁺ co-doped cubic ZrO₂:Eu³⁺ nanophosphors

Charge compensation assisted enhancement of photoluminescence in combustion derived Li⁺ co-doped cubic ZrO₂:Eu³⁺ nanophosphors

Controllable synthesis and luminescence of YPO4:Ln3+ (Ln = Eu and Sm) nanotubes

Photoluminescence of a novel Na3Y(VO4)2:Eu3+ red phosphor for near ultraviolet light emitting diodes application

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Improved luminescence behavior of YVO4:Eu3+ hollow microspheres by Ca2+ doping

Cited by 9 publications

References 32 publications

Charge compensation assisted enhancement of photoluminescence in combustion derived Li+ co-doped cubic ZrO2:Eu3+ nanophosphors

Charge compensation assisted enhancement of photoluminescence in combustion derived Li+ co-doped cubic ZrO2:Eu3+ nanophosphors

Controllable synthesis and luminescence of YPO4:Ln3+ (Ln = Eu and Sm) nanotubes

Photoluminescence of a novel Na3Y(VO4)2:Eu3+ red phosphor for near ultraviolet light emitting diodes application

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Charge compensation assisted enhancement of photoluminescence in combustion derived Li⁺ co-doped cubic ZrO₂:Eu³⁺ nanophosphors

Charge compensation assisted enhancement of photoluminescence in combustion derived Li⁺ co-doped cubic ZrO₂:Eu³⁺ nanophosphors