Engineering the multifunctionality of LiYTeO garnets with Sm and Tb activators for solid-state lighting and luminescence thermometry.

Tuning the photophysical response is indispensable in realizing the full potential of phosphors to meet the demands of multifunctional applications, such as solid-state lighting and optical thermometry. Herein, orange-red emission from an Sm-based LiYTeO system was studied for the first time with CIE coordinates of (0.488, 0.

Comprehension of the photoinduced charge transfer assisted energy transfer in Gd-based host sensitized tellurate phosphors for thermal sensing and anticounterfeiting labels.

A series of novel Eu-activated BaGdTeO (BGT) phosphors were successfully synthesised a high temperature solid state reaction method. The crystal structure analysis showed that Eu-doped BaGdTeO double perovskite phosphors possess monoclinic symmetry with space group 2/. The as-prepared phosphors can be efficiently excited by far-ultraviolet light to generate reddish orange luminescence of around 593 nm corresponding to the D → F transitions of Eu ions.

Enhancing the inherent NIR photoluminescence in SrLaLiTeO through Cr-Yb co-substitution for high performance pc-LEDs.

Until now, double perovskite tellurates have not been reported to exhibit inherent NIR photoluminescence. Therefore, the current study's revelation of inherent NIR luminescence in SrLaLiTeO double perovskite centered at 970 nm under 340 nm excitation is particularly intriguing. This phenomenon is attributed to the photoluminescence of Te ions.

Augmenting cyan emission in vanadate garnets Dyactivation for light emitting devices and multi-mode optical thermometry.

Developing cyan-based phosphors is inevitable to bridge the cyan gap to generate white light with a high color rendering index. Herein, the blue-green emission from the VO center in the SrNaMgVO host is augmented activating with Dy ions. Dual emission from the SrNaMgVO:Dy system under 335 nm excitation is due to the energy transfer from VO to the Dy center.

Strategic Tuning of Photophysical Response in the Polyhedral Framework of the Garnet Structure toward White Light-Emitting Devices with Enhanced Color Rendering.

Designing a single-phase phosphor with high quantum efficiency and full spectrum emission is inevitable for today's scientific world. Herein, an optimal strategy for realizing white emission in a single component matrix is envisaged based on the structure-property-design-device policy. Cationic substitution corresponding to polyhedral expansion and contraction in AA'BVO confirms the existence of strong and intricate linkage in the garnet structure.

Design and Fabrication of Layered Electromagnetic Interference Shielding Materials: A Cost-Effective Strategy for Performance Prediction and Efficiency Tuning.

The electromagnetic interference (EMI) shielding market is one of the fast-growing sectors owing to the increasingly complicated electromagnetic environment. Recently, priority has been given to improvise the techniques to fine-tune and predict the shielding properties of structures without exhausting raw materials and reduce the expense as well as the time required for optimization. In this article, we demonstrate an effective and precise method to predict the EMI shielding effectiveness (SE) of materials via simulating the performance of composites having alternate layers of conducting and magnetic materials in a virtual waveguide measurement environment based on the finite element method (FEM).

Green Route for the Synthesis of Fluorescent Carbon Nanoparticles from Circassian Seeds for Fe(III) Ion Detection.

A facile and green strategy was carried out for the preparation of fluorescent carbon nanoparticles (CNp) using non-toxic circassian seeds as carbon precursor (CNp, named ACNp). The surface of amorphous ACNp is latched with different surface moieties such as hydroxyl, carbonyl, ether and amino groups and it is confirmed by FTIR and XPS. These functionalities provide high solubility and stability to ACNp in aqueous medium.

Room-Temperature Ferromagnetic SrYCoO and Carbon Black-Reinforced Polyvinylidenefluoride Composites toward High-Performance Electromagnetic Interference Shielding.

In this study, we fabricated composites of conducting carbon black (CB), room-temperature ferromagnetic SrYCoO (SYCO) and polyvinylidenefluoride (PVDF) by the solution mixing and coagulation method for the first time. During the nucleation process of PVDF, the presence of SYCO and CB individually facilitates the crystallization of polar β and semipolar γ phases along with the nonpolar α phase in PVDF. The dc electrical conductivity of PVDF raised from 1.

Structural Characterization of B-Site Ordered BaLnTeO (Ln = La, Pr, Nd, Sm, and Eu) Double Perovskites and Probing Its Luminescence as Eu Phosphor Hosts.

BaLnTeO (Ln = La, Pr, Nd, Sm, and Eu) double perovskites were synthesized via solid-state ceramic route. Preliminary X-ray diffraction studies indicated a pseudocubic structure with lattice parameters ranging from 8.55 to 8.

Sr2FeO3 with stacked infinite chains of FeO4 square planes.

The synthesis of Sr2FeO3 through a hydride reduction of the Ruddlesden-Popper layered perovskite Sr2FeO4 is reported. Rietveld refinements using synchrotron and neutron powder diffraction data revealed that the structure contains corner-shared FeO4 square-planar chains running along the [010] axis, being isostructural with Sr2CuO3 (Immm space group). Fairly strong Fe-O-Fe and Fe-Fe interactions along [010] and [100], respectively, make it an S = 2 quasi two-dimensional (2D) rectangular lattice antiferromagnet.