Luminescence and nonlinear optical properties of Er3+- doped ZnWO4 nanostructures

Rahulan, K. Mani; Flower, Angeline Little; Padmanathan, N.; Mahendra, Anmol; Shekhawat, Vijay; Vinitha, G.; Sujatha, R. Annie; Shivkumar, M. A.

doi:10.1016/j.jphotochem.2019.112128

Cited by 15 publications

(7 citation statements)

References 27 publications

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“…It was found that under the excitation of 394 and 465 nm, the fluorescence could be effectively excited and have high thermal stability. Rahulan et al [ 137 ] prepared ZnWO 4 nanostructures with different Er concentrations by the hydrothermal method. The results show that the addition of Er 3+ makes the absorption band of ZnWO 4 shift to a higher wavelength, enhances the absorption of the visible light region, enhances the luminescence intensity of ZnWO 4 , and improves the fluorescence lifetime.…”

Section: Application Of Znwo4mentioning

confidence: 99%

Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions

Wang

et al. 2021

Energy Tech

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At present, nanostructures with excellent morphology have become a research hotspot. With the deepening of research and the rapid development of nanotechnology, nanosemiconductors have also made remarkable progress. In recent years, ZnWO4 in metal tungstates has been widely used in many fields, which is mainly due to its high crystal density, short radiation length, excellent optical properties, good radiation damage resistance, and non‐liquefaction. Therefore, herein, the synthesis methods and applications of ZnWO4 semiconductor materials in recent years are reviewed. First, the crystal structure and characteristics of ZnWO4 are described, and then the latest research progress of ZnWO4 semiconductor materials is summarized. The synthesis methods and contributions to photocatalysis, sensors, electronic materials, and luminescent materials are highlighted. The characteristics of ZnWO4 nanoarrays and their applications in supercapacitors are particularly emphasized, which provide a reference for the development of multifunctional nanoarrays. Finally, the challenges and countermeasures of ZnWO4 semiconductor materials are summarized and prospected. In a word, a new idea and strategy to design and assemble new types of ZnWO4 nanomaterials with multiconstructional systems and multifunctional properties for their practical applications is provided.

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Section: Application Of Znwo4mentioning

confidence: 99%

Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions

Wang

et al. 2021

Energy Tech

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“…Some of its advantages like large mean refractive index and excellent chemical stability can be attributed to the tungstate as a self-activating phosphor. In this respect, the nonlinear optical properties of Er 3+ -doped ZnWO4 have been explored which indicated the applicability of MWO4 (metal tungstates) laser for designing advanced photonic devices [13]. However, this property may be amplified with the incorporation or doping of other materials especially transition metal oxides.…”

Section: Introductionmentioning

confidence: 99%

Effect of MnO2 and MnO2-NCNO addition on structural and nonlinear optical properties of CoWO4 ceramics

Nadafan

Ghalkhani

Sohouli

2021

Preprint

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The nitrogen-doped carbon nano-onions (NCNOs) were prepared by annealing the ultra-dispersed aminated-nanodiamond solution under He gas at 1150°C followed by calcination at 400°C. The nanostructures of CoWO4, MnO2, CoWO4-MnO2, and CoWO4-MnO2-NCNO were synthesized through the simple precipitation method under ultrasonication followed by calcination at 450°C. The morphology, structure, and optoelectronic properties of the samples were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Z-scan method. The homogeneous distribution of the tiny aggregated plate-like and spongy particles throughout the nanocomposite created a highly porous nanostructure with a large surface area. The nonlinear absorption (NLA) coefficient and nonlinear refractive (NLR) index were of the order of 10-3(cm/W) and 10-8(cm2/W), respectively. In different incident intensity of laser, all synthesized samples show TPA effect implying the positive sign of NLA coefficient. MnO2 and NCNO structure have positive NLR index indicating the self-focusing optical nonlinearity. The self-defocusing effect and the negative sign of nonlinearity in the CoWO4 nanoparticles, MnO2-CoWO4, and MnO2-NCNO-CoWO4 nanocomposites are vivid. The porous structure of CoWO4 nanoparticles and trapping the light into CoWO4 nanoparticles are the main reasons for nonlinearity of this nanoparticles. Porosity is also one of the most important reasons for the nonlinear optical responses of NCNO structure. The NLR index and NLA coefficient of MnO2 decreased by increasing the incident intensity. Moreover, an increase in the incident intensity improved the nonlinear responses in the rest of samples. The present nonlinear optical results of the synthesized samples can be applied in optical devices.

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“…Metal tungstates are a class of ternary compounds that have attracted interest in studies due to its immense applications in several areas. These materials belong to the family of scheelites that have the chemical formula MWO 4 , where M is a metallic cation of valence +2, for example, Ca, Sr, Ba, Zn, and Pb [1][2][3][4]. Mostly, these materials can be found with two different structures, i.e., monoclinic, or tetragonal structure.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of BaWO4:xTm3+,yPr3+ obtained by ultrasonic spray pyrolysis

Santiago

Macedo

Oliveira

et al. 2020

J Mater Sci: Mater Electron

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In the present paper, BaWO 4 :xTm 3+ ,yPr 3+ samples were synthesized by the ultrasonic spray pyrolysis process and the effect of doping on the structural and optical properties were analyzed. All XRD patterns were indexed by the scheelitetype tetragonal structure, without the presence of secondary phases, suggesting success in the Tm 3+ and Pr 3+ doping. The FESEM images showed than particles have sphere-like morphology with the presence of holes, irregularity, and pores on their surfaces. The bandgap of the BaWO 4 :xTm 3+ ,yPr 3+ sample varied between 5.50 and 5.58 eV. The doping of Tm 3+ and Pr 3+ resulted in a reduction in the photocatalytic activity can be linked to a decrease of effective masses ratio electron/hole and an increase in the recombination rate.

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Luminescence and nonlinear optical properties of Er3+- doped ZnWO4 nanostructures

Cited by 15 publications

References 27 publications

Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions

Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions

Effect of MnO2 and MnO2-NCNO addition on structural and nonlinear optical properties of CoWO4 ceramics

Synthesis and characterization of BaWO4:xTm3+,yPr3+ obtained by ultrasonic spray pyrolysis

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Luminescence and nonlinear optical properties of Er3+- doped ZnWO4 nanostructures

Cited by 15 publications

References 27 publications

Synthesis Methods and Applications of Semiconductor Material ZnWO4 with Multifunctions and Multiconstructions

Synthesis Methods and Applications of Semiconductor Material ZnWO4 with Multifunctions and Multiconstructions

Effect of MnO2 and MnO2-NCNO addition on structural and nonlinear optical properties of CoWO4 ceramics

Synthesis and characterization of BaWO4:xTm3+,yPr3+ obtained by ultrasonic spray pyrolysis

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Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions

Synthesis Methods and Applications of Semiconductor Material ZnWO₄ with Multifunctions and Multiconstructions