Warm white light phosphors Sc2W3O12: Dy3+, Eu3+ with ultrahigh thermal stability and tunable luminescence DOI

Xiaoqing Pei,

Miao Yan, Yifan Liu

et al.

Displays, Journal Year: 2024, Volume and Issue: unknown, P. 102922 - 102922

Published: Dec. 1, 2024

Language: Английский

Synergetic Contributions of High Quenching Concentration and Tuned Square Antiprism Geometry Boosting Far‐Red Emission of Eu3+ with Near‐Unit Efficiency DOI Creative Commons
Hong Li, Asif Ali Haider, Zhi Xie

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Far‐red phosphors have emerged as a desirable research hotspot owing to their critical role in promoting plant growth. Especially, Eu 3+ ions typically present the 5 D 0 → 7 F J (J = 0, 1, 2, 3, 4) transitions, which overlap with far‐red light required for photosynthesis. However, achieving high‐efficiency emission of remains challenging due weak 4 transition and concentration quenching. The study constructs two anomalously efficient garnet A 3 Sc 2 C O 12 (A Y , Gd . Al Ga ):Eu high‐resolution STEM measurement equipped an aberration corrector provides direct proofs both [EuO 8 ] configuration‐dependent strong origin high quenching concentration. Excitedly, two‐component substitution (replacing ‐Al ‐Ga ) triggers near‐unity internal quantum efficiency (IQE 99.01%) external (EQE 38.73%) :60%Eu resulting from effective modulation / transitions. LEDs device based on exhibits output power 113 mW at 300 mA. Subsequently, practical applications growth underscore significance these findings. This work opens new path development highly via synergistic effect square antiprism configuration

Language: Английский

Citations

1
Interstitial Oxygen-Driven Far-Red/Near-Infrared Emission and Efficiency Enhancement via Heterovalent Cation Substitution in Ca3WO6 Phosphors DOI

Zheng Xu,

Yining Wang,

Xiaole Xing

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

In this work, Ca3WO6 (CWO) phosphors were successfully synthesized using a high-temperature solid-state method, exhibiting an anomalous far-red/near-infrared (FR-NIR) emission centered at 685 nm. The origin of FR-NIR is confirmed through Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), density functional theory (DFT) calculations, and heterovalent cationic substitution (Y3+/Na+ → Ca2+). These analyses indicate that interstitial oxygen (Oi) defects within the lattice are primarily responsible for emission. Y3+ Ca2+ increases concentration Oi, significantly enhancing intensity. This results in increase internal quantum efficiency (IQE) increasing from 12.8 to 90.9%, realizing efficient self-activated phosphors. Furthermore, CWO demonstrate unique dual-band characterized by blue 435 nm endows with multifunctional applications plant growth lighting, nondestructive testing, night vision fields.

Language: Английский

Citations

1
Tunable Luminescence and Structural Modifications in Eu³⁺/Li⁺ Co-Doped YBa₃(BO₃)₃ Phosphors for LEDs DOI

Dhowah A.E. Somaily,

Abeer S. Altowyan,

U.H. Kaynar

et al.

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: unknown, P. 113453 - 113453

Published: March 1, 2025

Language: Английский

Citations

1
Red Color Tuning and Emission Enhancement in Thermally Stable Co‐Doped Ba3MoTiO8: Bi3+/Eu3+ Phosphors for Photo‐Electronic Applications DOI Open Access
Pooja Rohilla, Shristy Malik, Sheetal Kumari

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(6)

Published: Feb. 1, 2025

Abstract This research presents findings of various morphological and photoluminescence (PL) studies conducted on Bi 3+ /Eu ions co‐doped Ba 3 MoTiO 8 phosphors, which were synthesized using the common solid‐state reaction method. Phase analysis was through X‐ray diffraction (XRD) technique. Morphological images elemental composition examined field emission scanning electron microscopy (FESEM) energy dispersive (EDX) investigation. The nature vibrational frequencies bonds within phosphor lattice investigated Fourier transform infrared (FT‐IR) spectroscopy. Photoluminescence carried out under 272, 393, 465 nm excitations, revealing highest intensity peak at 615 nm, corresponding to 5 D 0 → 7 F 2 transition Eu ions. Commission Internationale de l'Eclairage (CIE) coordinates indicate that phosphors emit in red region. Decay curves 272 393 excitation wavelengths exhibited single exponential behavior. We propose use these as potential red‐emitting components white light‐emitting diode (w‐LED), color tunable devices other lighting (SSL) applications.

Language: Английский

Citations

0
Synthesis and multi-color tunable luminescence performance of Tb3+/Eu3+ co-doped SrGdGa3O7 phosphors DOI
Qian Du, Changsheng Wang, Yuguo Yang

et al.

Polyhedron, Journal Year: 2025, Volume and Issue: unknown, P. 117469 - 117469

Published: Feb. 1, 2025

Language: Английский

Citations

0
Enhanced Luminescence and Thermal Stability in High Gd3+/Eu3+ Co-Doped Ba3Y4O9 Phosphors via Co-Precipitation Method DOI Creative Commons
Dongdong Zhu, Chunfeng Wang,

Xiaohuai Wang

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(5), P. 1085 - 1085

Published: Feb. 27, 2025

The co-precipitation method was successfully used to synthesize Ba3(Y0.6-xGd0.4Eux)4O9 (0.01 ≤ x 0.09) phosphors with heavy Gd3+ doping, resulting in significantly enhanced thermal stability and luminescence performance. Structural analyses confirm that Eu3+ ions substitute Y3+ the lattice, causing lattice expansion improving crystal asymmetry, which enhances emission. incorporation of creates efficient energy transfer pathways while suppressing non-radiative relaxation, leading stable fluorescence lifetimes even at elevated temperatures. With a activation ~0.3051 eV, Ba3(Y0.55Gd0.4Eu0.05)4O9 phosphor exhibits superior resistance quenching compared Ba3(Y0.95Eu0.05)4O9 many conventional red phosphors. Furthermore, reduced color temperature emission spectra across wide range highlight its potential for advanced lighting display technologies high-temperature environments.

Language: Английский

Citations

0
Preparation of Ba9Lu2Si6O24:Sm3+ red phosphor and its application in white LEDs DOI
Yunzheng Wang, Zhao Li,

Hongyu Ji

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179727 - 179727

Published: March 1, 2025

Language: Английский

Citations

0
Enhancing luminescence through cationic substitution: Synergistic effects of lattice distortion and rigidity augmentation in Sm3+-doped composite perovskite for versatile applications DOI

Xingyang Peng,

Ruirui Cui, Xiang Guo

et al.

Journal of Rare Earths, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
A heat-resistant red-emitting K6Bi13(PO4)15:Sm3+,Eu3+ phosphor toward high color rendering LED lights DOI

Haonan Cui,

Yuting Li, Li Ran

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Rare-earth free far-red-emitting Li1.5La1.5TeO6:Mn4+ phosphors for transparent phosphor film-based light projection application DOI
Jun Kyu Lee,

Weiwei Xiang,

Jae Su Yu

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180323 - 180323

Published: April 1, 2025

Language: Английский

Citations

0