Solution Combustion Synthesis of ZrO 2 :Tb 3+  Nanophosphors Viable for WLEDs

Ponkumar, S.; Janaki, K.; Prakashbabu, D.; Ramalingam, H.B.; Munirathnam, K.; Krishna, R. Hari

doi:10.1016/j.matpr.2017.12.354

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…Individual nanoparticles were also observed. Moreover, the void-like nature of the particle observed in Figure S2 can be associated with the escape of gaseous combustion products that were formed during combustion synthesis [58]. EDS measurements were also carried out, and, as observed for the ZrO 2 nanoparticles produced under microwave irradiation (Figure 4), the presence of a homogeneous distribution of Zr (Figure 8c) and O (Figure 8d) was clear.…”

Section: Electron Microscopymentioning

confidence: 79%

“…Solution combustion synthesis is known to produce materials in powder form but also as thin films [58,60,98]. The ZrO 2 powder was obtained by conventional solution combustion synthesis, with zirconium oxynitrate and urea as precursors and 2-methoxyethanol (2-ME) as a solvent.…”

Section: Zro 2 Powder X-ray Diffractionmentioning

confidence: 99%

“…Several studies have reported the production of ZrO 2 nanomaterials using sol-gel, particularly solution combustion synthesis, which is included in the sol-gel method [58][59][60]. Solution combustion synthesis is an attractive technique for the preparation of ZrO 2 nanopowders and thin films, owing to its simplicity, energy and time savings, cost-effectiveness, versatility, higher purity compared with conventional sol-gel methods, low synthesis temperatures, and compatibility with flexible substrates and large scale production [61][62][63].…”

Section: Introductionmentioning

confidence: 99%

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A Comparison between Solution-Based Synthesis Methods of ZrO2 Nanomaterials for Energy Storage Applications

et al. 2022

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The present study is focused on the synthesis of zirconium dioxide (ZrO2) nanomaterials using the hydrothermal method assisted by microwave irradiation and solution combustion synthesis. Both synthesis techniques resulted in ZrO2 powders with a mixture of tetragonal and monoclinic phases. For microwave synthesis, a further calcination treatment at 800 °C for 15 min was carried out to produce nanopowders with a dominant monoclinic ZrO2 phase, as attested by X-ray diffraction (XRD) and Raman spectroscopy. The thermal behavior of the ZrO2 nanopowder was investigated by in situ XRD measurements. From the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images, the presence of near spherical nanoparticles was clear, and TEM confirmed the ZrO2 phases that comprised the calcinated nanopowders, which include a residual tetragonal phase. The optical properties of these ZrO2 nanopowders were assessed through photoluminescence (PL) and PL excitation (PLE) at room temperature (RT), revealing the presence of a broad emission band peaked in the visible spectral region, which suffers a redshift in its peak position, as well as intensity enhancement, after the calcination treatment. The powder resultant from the solution combustion synthesis was composed of plate-like structures with a micrometer size; however, ZrO2 nanoparticles with different shapes were also observed. Thin films were also produced by solution combustion synthesis and deposited on silicon substrates to produce energy storage devices, i.e., ZrO2 capacitors. The capacitors that were prepared from a 0.2 M zirconium nitrate-based precursor solution in 2-methoxyethanol and annealed at 350 °C exhibited an average dielectric constant (κ) of 11 ± 0.5 and low leakage current density of 3.9 ± 1.1 × 10−7 A/cm2 at 1 MV/cm. This study demonstrates the simple and cost-effective aspects of both synthesis routes to produce ZrO2 nanomaterials that can be applied to energy storage devices, such as capacitors.

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Section: Electron Microscopymentioning

confidence: 79%

Section: Zro 2 Powder X-ray Diffractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Comparison between Solution-Based Synthesis Methods of ZrO2 Nanomaterials for Energy Storage Applications

et al. 2022

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“…121 In addition, S. Ponkuma et al synthesized ZrO 2 :Tb 3+ nano-phosphors and such phosphors are highly promising for being used in WLED applications. 122 H. Dahiya et al also prepared Eu 3+ doped Ba 3 YP 3 O 12 red emitting nano phosphors which were impactful candidates in UV-excited WLED. 123 N. Dhananjaya et al prepared a red-emitting nano phosphor of Gd 2 O 3 :Eu 3 + which was used in the phosphor marketplace.…”

Section: Synthesis Methodsmentioning

confidence: 99%

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Farooq,

Rafiq,

Shah

et al. 2023

ECS J. Solid State Sci. Technol.

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The manuscript focuses on the concept of nano-phosphors, a remarkable type of material that has been widely explored because of their diverse promising applications. Progress in the development of such nano-phosphors as luminescent materials has received significant research attention. The white-light-emitting diodes (WLEDs) have grown dramatically and represent the most intriguing lighting source of the twenty-first century. The contribution of rare-Earth (RE) ions to lighting technology is explicitly addressed. The additional physical characteristics of white light that are addressed in the present manuscript comprise the correlated color temperature (CCT), the color rendering index (CRI), and the Commission International de’ Eclairage (CIE) chromaticity coordinates. Multiple synthesis methods employed around the globe to produce such industrially important nano-phosphors along with more specialized and impactful techniques to characterize all such materials are thus thoroughly explored. Also, the various technologically significant applications of these materials are described. The evolution of these potentially suitable luminescent materials for WLEDs and their white-light characteristics is also outlined. The manuscript presents a comprehensive overview of the advancement and innovation of nano-phosphors, their application fields and the significant milestones of artificial lighting toward modernization.

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ZrO2 based nanostructures: A sustainable, economical, green and efficient organocatalyst

Mittal,

Kumar,

Saroha

et al. 2024

Journal of Molecular Liquids

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Solution Combustion Synthesis of ZrO 2 :Tb 3+ Nanophosphors Viable for WLEDs

Cited by 3 publications

References 10 publications

A Comparison between Solution-Based Synthesis Methods of ZrO2 Nanomaterials for Energy Storage Applications

A Comparison between Solution-Based Synthesis Methods of ZrO2 Nanomaterials for Energy Storage Applications

Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

ZrO2 based nanostructures: A sustainable, economical, green and efficient organocatalyst

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