High photometric and spectroscopic features of emerald light emitter terbium (III) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si7.svg"><mml:mrow><mml:mi mathvariant="bold-italic">β</mml:mi></mml:mrow></mml:math>-Ketoester functionalised complexes for modern lighting devices

Punia, Monika; Dhankhar, Priyanka; Dua, Nishita; Taxak, V.B.; Khatkar, S.P.; Doon, Priti Boora

doi:10.1016/j.ica.2022.121225

Cited by 1 publication

(2 citation statements)

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“…The calculated values of refractive index for E1-E5 complexes are provided in Table 4. The obtained values are comparable with those of the semiconductor metal oxides, recommending the utilization of E1-E5 complexes in optoelectronic gadgets [27].…”

Section: Uv-visible Absorption and Optical Band Gap Analysissupporting

confidence: 72%

“…Moreover, the synergistic effect of bidentate nitrogen donors enhances the outcome of luminescence intensity of Eu 3+ complexes (E2‐E4) in which the main ligand BP and auxiliary ligands function simultaneously in populating the 4f excited state of Eu 3+ by transferring the energy. The S 1 and T 1 states of bidentate nitrogen donors are taken from reported literature (Table 6) [20–43]. The energy transfer process is the same as that in E1‐E5 complexes, so as an example, the energy level diagram of E5 complexes is shown in Figure 11b.…”

Section: Resultsmentioning

confidence: 99%

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Designing and Judd–Ofelt evaluation of versatile luminescent Eu (III) complexes sensitized with β‐diketone ligand for multifarious applications

et al. 2023

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The present research work entails the synthesis of one binary and four ternary red lightÀemitting Eu (III)-based complexes with 3-benzylidene-2,4-pentanedione as the main ligand and 1,10-phenanthroline, bathophenanthroline, neocuproine, and 4,4 0 -0 dimethyl-2,2 0 -0 bipyridyl as auxiliary ligands. The metal-organic framework of the series was elucidated using energy dispersive X-ray analysis, elemental analysis, Fourier transform infrared spectroscopy, and proton nuclear magnetic resonance. This Eu (III) series exhibits optimum thermal stability, making them a promising candidate for organic light-emitting diodes. On the basis of emission spectra, their optical parameters such as nonradiative and radiative decay rates, luminescence decay time, intrinsic quantum efficiency, and Judd-Ofelt intensity parameter were determined.The monocentric luminescence and Judd-Ofelt parameters reveal the absence of symmetry around the europium center. CIE chromaticity coordinates, correlated color temperature values, color purity, and asymmetric ratios authenticate the color coordinates of the complexes in red region. Optical band gap values lie within the range of wide band gap semiconductors, indicating their utilization in military radars and biological labeling.

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Section: Uv-visible Absorption and Optical Band Gap Analysissupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%