Efficient emission in copper-doped Cs<sub>3</sub>ZnX<sub>5</sub> (X = Cl, I) for white LEDs and X-ray scintillators

Yang, Yong; Wu, Jerry J.; Zhou, Tong; Wang, Yunluo; Zheng, Jiaqian; Liu, Ruifeng; Hou, Jingshan; Li, Xiang; Wang, Bijia; Jiang, Wan; Chen, Haijie

doi:10.1039/d3tc01657a

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…Currently, efficient emission is achieved in the all-inorganic zero-dimensional Zn-based compound Cs-Zn-X (X = Cl, Br, and I) by doping modification with Cu + ions. Through structural transformation and halogen control, the emission color of Cs-Zn-X can be effectively adjusted from violet to blue [5,15,23,24]. However, these materials still face the problem of poor stability due to the presence of Cu 2+ ions.…”

Section: Introductionmentioning

confidence: 99%

Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping

Tian,

Wei,

Duan

et al. 2024

Molecules

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Low-dimensional metal halides with efficient luminescence properties have received widespread attention recently. However, nontoxic and stable low-dimensional metal halides with efficient blue emission are rarely reported. We used a solvothermal synthesis method to synthesize tetravalent zirconium ion-doped all-inorganic zero-dimensional Cs2ZnCl4 for the first time. Bright blue emission in the range of 370 nm–700 nm with a emission maximum at 456 nm was observed in Zr4+:Cs2ZnCl4 accompanied by a large Stokes shift, which was due to self-trapped excitons (STEs) caused by the lattice vibrations of the twisted structure. Simultaneously, the PLQY of Zr4+:Cs2ZnCl4 achieve an impressive 89.67%, positioning it as a compelling contender for future applications in blue-light technology.

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Section: Introductionmentioning

confidence: 99%

Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping

Tian,

Wei,

Duan

et al. 2024

Molecules

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“…Taking the most widely reported and most intensively studied all-inorganic Cs-Zn-X (Cs 2 ZnX 4 and Cs 3 ZnX 5 , X = Cl, Br, I) system as an example, many optically active ions have been doped into Cs-Zn-X and achieved a variety of efficient luminescent colors. The incorporation of Cu + ions into Cs-Zn-X can achieve violet-to-blue light emission [36][37][38]. Cu + ions usually exhibit blue emission after doping in chloride and bromide, while in iodide, they exhibit violet emission.…”

Section: Introductionmentioning

confidence: 99%

Mn(II)-Activated Zero-Dimensional Zinc(II)-Based Metal Halide Hybrids with Near-Unity Photoluminescence Quantum Yield

Peng,

Wei,

Duan

et al. 2024

Materials

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As derivatives of metal halide perovskite materials, low-dimensional metal halide materials have become important materials that have attracted much attention in recent years. As one branch, zinc-based metal halides have the potential for practical applications due to their lead-free, low-toxicity and high-stability characteristics. However, pure zinc-based metal halide materials are still limited by their poor optical properties and cannot achieve large-scale practical applications. Therefore, in this work, we report an organic–inorganic hybrid zero-dimensional zinc bromide, (TDMP)ZnBr4, using transition metal Mn2+ ions as dopants and incorporating them into the (TDMP)ZnBr4 lattice. The original non-emissive (TDMP)ZnBr4 exhibits bright green emission under the excitation of external UV light after the introduction of Mn2+ ions with a PL peak position located at 538 nm and a PLQY of up to 91.2%. Through the characterization of relevant photophysical properties and the results of theoretical calculations, we confirm that this green emission in Mn2+:(TDMP)ZnBr4 originates from the 4T1 → 6A1 optical transition process of Mn2+ ions in the lattice structure, and the near-unity PLQY benefits from highly localized electrons generated by the unique zero-dimensional structure of the host material (TDMP)ZnBr4. This work provides theoretical guidance and reference for expanding the family of zinc-based metal halide materials and improving and controlling their optical properties through ion doping.

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Tunable Spectral Emission from 0D Rb₃ZnBr₅ Crystals for Single‐Component Multi‐Color LED Applications

Chen,

Lu,

Pan

et al. 2024

Laser & Photonics Reviews

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The development of efficient, stable, and cost‐effective luminescent materials is crucial for advancing lighting and display technologies. In this study, a series of tunable luminescent materials based on the novel 0D all‐inorganic perovskite (AIP) crystal Rb₃ZnBr₅ (RZB) is obtained. The emission of Sn2⁺ doped RZB spans the entire visible light range and extends into the near‐infrared (NIR) region, achieving a photoluminescence quantum yield (PLQY) of 75%. The distinct lifetimes combined with theoretical calculations, indicate that the broadband dual‐peak emissions at 496 and 636 nm originate from the singlet and triplet states of Sn2⁺, respectively, which is rarely observed in Sn2⁺‐doped perovskite crystals. The phosphor RZB:Sn2⁺ demonstrates the high thermal stability, along with excellent moisture and air stability. Co‐doping RZB with Sn2⁺ and Mn2⁺ broadens the excitation spectrum and allows precise control over the excitation wavelength, facilitating dynamic transitions from warm white to yellow and green light. This feature is particularly beneficial for multicolor LEDs and multi‐level anti‐counterfeiting applications.

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Efficient emission in copper-doped Cs₃ZnX₅ (X = Cl, I) for white LEDs and X-ray scintillators

Abstract: The zinc halides recently have attracted some interest as a new lead-free family with superior optoelectronic properties. In this work, we studied the copper-doped Cs3ZnX5 (X = Cl, I) series...

Cited by 8 publications

References 40 publications

Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping

Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping

Mn(II)-Activated Zero-Dimensional Zinc(II)-Based Metal Halide Hybrids with Near-Unity Photoluminescence Quantum Yield

Tunable Spectral Emission from 0D Rb₃ZnBr₅ Crystals for Single‐Component Multi‐Color LED Applications

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Efficient emission in copper-doped Cs3ZnX5 (X = Cl, I) for white LEDs and X-ray scintillators

Abstract: The zinc halides recently have attracted some interest as a new lead-free family with superior optoelectronic properties. In this work, we studied the copper-doped Cs3ZnX5 (X = Cl, I) series...

Cited by 8 publications

References 40 publications

Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping

Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping

Mn(II)-Activated Zero-Dimensional Zinc(II)-Based Metal Halide Hybrids with Near-Unity Photoluminescence Quantum Yield

Tunable Spectral Emission from 0D Rb3ZnBr5 Crystals for Single‐Component Multi‐Color LED Applications

Contact Info

Product

Resources

About

Efficient emission in copper-doped Cs₃ZnX₅ (X = Cl, I) for white LEDs and X-ray scintillators

Tunable Spectral Emission from 0D Rb₃ZnBr₅ Crystals for Single‐Component Multi‐Color LED Applications