Growth and spectral properties of Cr3+/RbAl(MoO4)2 crystal

Wang, G J; Huang, Yuanyuan; Zhang, L Z; Lin, Zheshuai; Wang, G F

doi:10.1179/143307511x12998222919191

Cited by 4 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cr 3+ has an electronic configuration of 3d 3 with an unparalleled broadband NIR emission property, which typically is affected by the crystal field environment and electron–phonon coupling. , So far, many Cr 3+ -doped NIR phosphors with oxide or fluoride-based matrices have been reported. Figure a lists the luminescence spectrum range and FWHM of recently reported Cr 3+ -activated broadband NIR phosphors. − Regarding the application, NIR-I region (700–1000 nm) has a relatively limited tissue penetration depth and higher background due to tissue auto-luminescence, NIR-II region (1000–1400 nm), at longer wavelength NIR in particular, have lower scattering, deeper tissue penetration, and higher imaging resolution. Medical imaging based on NIR-II has better clarity and less interference from endogenous substances .…”

Section: Introductionmentioning

confidence: 99%

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs₂NaYCl₆:Cr³⁺ Phosphor for Night Vision Imaging

Zhu

Gao

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) offer numerous advantages, including compact size, tunable emission spectra, energy efficiency, and high integration potential. These features make them highly promising for various applications, such as night vision monitoring, food safety inspection, biomedical imaging, and theragnostics. Allinorganic halide double-perovskite materials, known for their large absorption cross section, excellent defect tolerance, and long carrier diffusion radius, serve as unique matrices for constructing nearinfrared fluorescent materials. In this study, we successfully prepared the all-inorganic metal halide double-perovskite Cs 2 NaYCl 6 :Cr 3+ using a grinding−sintering method. A small fraction of the [YCl 6 ] octahedra within the host material's lattice was substituted with Cr 3+ ions, resulting in the creation of the Cs 2 NaYCl 6 :Cr 3+ phosphor. When excited with λ = 310 nm UV light, the phosphor exhibited a broad emission range spanning from 800 to 1400 nm, covering the NIR-I and NIR-II regions. It had a broad bandwidth emission of 185 nm and achieved a fluorescence quantum yield of 20.2%. The unique broadband emission of the phosphor originates from the weak crystal field environment provided by the Cs 2 NaYCl 6 host matrix, which enhances the luminescence properties of the Cr 3+ ions. To create NIR pc-LEDs, the phosphor was encapsulated onto a commercially available UV LED chip operating at 310 nm. The potential application of these NIR pc-LEDs in night vision imaging was successfully validated. KEYWORDS: all-inorganic metal halide double perovskite, Cr 3+ -doped Cs 2 NaYCl 6 phosphor, broadband NIR-I and NIR-II emission, night vision imaging, phosphor-converted light-emitting diodes

show abstract

Section: Introductionmentioning

confidence: 99%

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs₂NaYCl₆:Cr³⁺ Phosphor for Night Vision Imaging

Zhu

Gao

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Advances in Chromium‐Activated Phosphors for Near‐Infrared Light Sources

Zhao

Song

Liu

2022

Laser & Photonics Reviews

252

145

View full text Add to dashboard Cite

Cr3+/Cr4+‐activated near‐infrared (NIR) luminescent materials have attracted extensive attention owing to their tunable emission wavelength and widespread applications in plant growth, food analysis, biomedical imaging, night vision, and so on. Plenty of excellent NIR materials are developed by introducing Cr3+/Cr4+ ion to various inorganic hosts. Herein, the effect of crystal field on Cr3+/Cr4+ luminescence by combining the Tanabe–Sugano energy level diagram and configuration coordinate model is discussed. Research progress of Cr3+/Cr4+‐doped NIR luminescent materials, including the phosphors designed from structural models with octahedral, tetrahedral, and other coordination types, is then outlined. The luminescence properties of more than 200 kinds of Cr3+/Cr4+‐doped materials are summarized. In particular, several strategies for tuning emission wavelength, broadening emission band, enhancing NIR luminescence efficiency, and improving thermal stability, are listed. Finally, the current challenges and future prospects in the research of Cr3+/Cr4+‐doped NIR luminescent materials are presented. This review will contribute to a deeper understanding of not only Cr3+/Cr4+ luminescence mechanism but also the current research progress of chromium‐doped luminescent materials, so as to develop more Cr3+/Cr4+‐activated NIR luminescent materials with better performance and explore more applications.

show abstract

Crystal growth, spectral properties and crystal field analysis of Cr3+:MgWO4

Wang

et al. 2013

CrystEngComm

View full text Add to dashboard Cite

Growth and spectral properties of Cr³⁺/RbAl(MoO₄)₂ crystal

Cited by 4 publications

References 23 publications

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs₂NaYCl₆:Cr³⁺ Phosphor for Night Vision Imaging

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs₂NaYCl₆:Cr³⁺ Phosphor for Night Vision Imaging

Advances in Chromium‐Activated Phosphors for Near‐Infrared Light Sources

Crystal growth, spectral properties and crystal field analysis of Cr3+:MgWO4

Contact Info

Product

Resources

About

Growth and spectral properties of Cr3+/RbAl(MoO4)2 crystal

Cited by 4 publications

References 23 publications

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs2NaYCl6:Cr3+ Phosphor for Night Vision Imaging

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs2NaYCl6:Cr3+ Phosphor for Night Vision Imaging

Advances in Chromium‐Activated Phosphors for Near‐Infrared Light Sources

Crystal growth, spectral properties and crystal field analysis of Cr3+:MgWO4

Contact Info

Product

Resources

About

Growth and spectral properties of Cr³⁺/RbAl(MoO₄)₂ crystal

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs₂NaYCl₆:Cr³⁺ Phosphor for Night Vision Imaging

Achieving Broadband NIR-I to NIR-II Emission in an All-Inorganic Halide Double-Perovskite Cs₂NaYCl₆:Cr³⁺ Phosphor for Night Vision Imaging