Direct Blue‐LED Pumped Broadband Long‐Wavelength Near‐Infrared Emitter Based on Ni2+ Mono‐Doped Double Perovskite Materials for Versatile Optical Applications DOI Open Access
Zhihao Zhou, G. Ji,

Zhuowei Fei

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Abstract Long‐wavelength near‐infrared (NIR) phosphors (1000–2000 nm) have shown great promise in intelligent NIR spectroscopy technology fields. However, developing capable of directly absorbing blue light and emitting over 1000 nm still remains a significant challenge. Here, series ultra‐broadband with emission peaks longer than 1500 is achieved by incorporating single activator Ni 2+ ion into ALaMgMO 6 (A = Ca, Sr, Ba; M Sb, Nb, Ta) double perovskite hosts. Significantly, through composition modulation strategy, the designed exhibit an intense absorption band centered at 440 nm, making these mono‐doped pumped commercial LED chips without strictly introducing sensitized ions or energy transfer process. The origination effective blue‐light excitable NIR‐II to NIR‐III phosphor unraveled Rietveld structural refinement local symmetry analysis. Additionally, developed demonstrated potential spectroscopic analysis, night‐vision technology, non‐destructive visualization, information encryption identification. This work provides feasible strategy solve problem that ‐doped cannot be can promote development more long‐wavelength materials for multiple photonic applications.

Language: Английский

Extraordinary broadband near-infrared emission in Cr3+-doped ScTa0.5Nb0.5O4 with two selective doping sites DOI
Shoujun Ding, Chong Li,

Mengyu Zhang

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178571 - 178571

Published: Jan. 1, 2025

Language: Английский

Citations

0
Photoluminescence properties of Ni2+-doped double perovskite A2MgTiO6 (A = La/Lu) phosphor with NIR-II emission for spectral analysis application DOI
Xiongliang Wei, Shuai Huang,

Zheng Xu

et al.

Optical Materials, Journal Year: 2025, Volume and Issue: unknown, P. 116792 - 116792

Published: Feb. 1, 2025

Language: Английский

Citations

0
Zero-thermal-quenching broadband NIR-II emitting Mg4Nb2O9: Ni2+ phosphor via defective engineering and multi-site occupation DOI
Hua Yu,

Zhexuan Gao,

Huanping Wang

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179519 - 179519

Published: March 1, 2025

Language: Английский

Citations

0
Modulation of Sharp‐Line Red Emissions to Efficient Broadband Near‐Infrared Luminescence in Cr3+‐Activated Spinel Phosphors via Defect Engineering DOI Open Access

Shijie Yu,

Ting‐Yu Lin, Qianxing Huang

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Spectral tuning toward longer emission wavelengths, while maintaining high quantum efficiency (QE) and thermal stability, remains a formidable challenge for near‐infrared (NIR) luminescent materials. Herein, Mg‐deficiency strategy is proposed to achieve the redshift broadening of Cr 3+ in MgAl 2 O 4 spinel without sacrificing QE stability. The spectrum shifts from sharp lines around 700 nm stochiometric :Cr an ultra‐broadband centered at 860 Mg‐deficient Mg 0.9 Al 3.9 , with profound increase full width half maximum (FWHM) ≈85 303 nm. Meanwhile, :0.05Cr phosphor exhibits internal 87% can maintain 80% initial intensity 150 °C. Moreover, tunable bands peaking 685 908 are achieved : x by varying concentration. broadband be attributed formation anti‐site defects, overall lattice contraction caused contributes maintenance low quenching. Finally, NIR phosphor‐converted light‐emitting diode (pc‐LED) fabricated its application nondestructive testing demonstrated. This study initiates new way improve spectral performance phosphors preserving

Language: Английский

Citations

0
Direct Blue‐LED Pumped Broadband Long‐Wavelength Near‐Infrared Emitter Based on Ni2+ Mono‐Doped Double Perovskite Materials for Versatile Optical Applications DOI Open Access
Zhihao Zhou, G. Ji,

Zhuowei Fei

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Abstract Long‐wavelength near‐infrared (NIR) phosphors (1000–2000 nm) have shown great promise in intelligent NIR spectroscopy technology fields. However, developing capable of directly absorbing blue light and emitting over 1000 nm still remains a significant challenge. Here, series ultra‐broadband with emission peaks longer than 1500 is achieved by incorporating single activator Ni 2+ ion into ALaMgMO 6 (A = Ca, Sr, Ba; M Sb, Nb, Ta) double perovskite hosts. Significantly, through composition modulation strategy, the designed exhibit an intense absorption band centered at 440 nm, making these mono‐doped pumped commercial LED chips without strictly introducing sensitized ions or energy transfer process. The origination effective blue‐light excitable NIR‐II to NIR‐III phosphor unraveled Rietveld structural refinement local symmetry analysis. Additionally, developed demonstrated potential spectroscopic analysis, night‐vision technology, non‐destructive visualization, information encryption identification. This work provides feasible strategy solve problem that ‐doped cannot be can promote development more long‐wavelength materials for multiple photonic applications.

Language: Английский

Citations

0