First-principles study of electronic structure and magnetism in SrO crystal contained cation defects

Sun, Ruxi; Liu, Tingyu; Wu, Kaili; Shi, Chunyu; Song, Jiamei

doi:10.1016/j.jmmm.2020.167524

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…The Bi 3+ -related defects Sr × carrying one positive charge act as the trapping centers of electrons to participate in the trap-related luminescent processes. Furthermore, there are vacancies between Sr 2+ [43]. To compensate the +3 charge, •• (where V is denoted as vacancy) with opposite charge should be formed in order to keep the local neutrality [44].…”

Section: Resultsmentioning

confidence: 99%

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multi-mode Anti-counterfeiting

Yang

Yuan

et al. 2021

Preprint

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Mechanoluminescence materials that emit light under mechanical stimulation have attracted widespread attention in sensing, anti-counterfeiting and imaging applications. In this study, a series of novel Sr1-xBixZnSO (0.001≤x≤0.1) samples were synthesized by the method of high temperature solid-state reaction. It is worth noting that the distortion degree of SrO3S3 octahedron was increased with increasing Bi3+ concentration, and the color manipulated Sr1-xBixZnSO which can emit different photoluminescence (blue to dark blue and finally red) and mechanoluminescence (orange to red) colors are obtained. Moreover, the deep traps can stably store and provide electronic supplement to shallow traps released under mechanical stimulated. Therefore, devices made of SrZnSO: Bi3+ phosphor and polydimethylsiloxane (PDMS) can be used as thermo-mechano-opto three-mode anti-counterfeiting. The ML intensity is linear to the external load, can be utilized for stress sensing or imaging.

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Section: Resultsmentioning

confidence: 99%

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multi-mode Anti-counterfeiting

Yang

Yuan

et al. 2021

Preprint

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“…The Bi 3+ -related defects 𝐵𝑖 Sr × carrying one positive charge act as the trapping centers of electrons to participate in the trap-related luminescent processes. Furthermore, there are vacancies between Sr 2+ [43]. To compensate the +3 charge, 𝑉 𝑆𝑟 •• (where V is denoted as vacancy) with opposite charge should be formed in order to keep the local neutrality [44].…”

Section: (A)mentioning

confidence: 99%

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi³⁺ for Multimode Anticounterfeiting

Yang

Guo

et al. 2022

Inorg. Chem.

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Mechanoluminescence materials that emit light under mechanical stimulation have attracted widespread attention in sensing, anti-counterfeiting and imaging applications. In this study, a series of novel Sr1-xBixZnSO (0.001≤x≤0.1) samples were synthesized by the method of high temperature solid-state reaction. It is worth noting that the distortion degree of SrO3S3 octahedron was increased with increasing Bi 3+ concentration, and the color manipulated Sr1-xBixZnSO which can emit different photoluminescence (blue to dark blue and finally red) and mechanoluminescence (orange to red) colors are obtained. Moreover, the deep traps can stably store and provide electronic 2 supplement to shallow traps released under mechanical stimulated. Therefore, devices made of SrZnSO: Bi 3+ phosphor and polydimethylsiloxane (PDMS) can be used as thermomechano-opto three-mode anti-counterfeiting. The ML intensity is linear to the external load, can be utilized for stress sensing or imaging.

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“…In the Ca 2 Al 2 SiO 7 :1%Pr 3+ phosphor, Ca 2+ ions in the matrix lattice are replaced by doping the luminescent center Pr 3+ ion. The replacement equation is as follows: 2 Pr 3 + + 3 normalCa 2 + → 2 Pr Ca • + V Ca ″ Pr Ca • carries a positive charge as the trapping center of electrons and participates in the trapping related luminescence process. At the same time, vacancy traps are formed around Ca 2+ .…”

mentioning

confidence: 99%

Crystal Field Engineering of Pr-Activated Gehlenite with Near Golden Ultraviolet C Emission for 100% Sterilization Efficiency

Wang

Deng

Sun

et al. 2023

J. Phys. Chem. Lett.

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Ultraviolet C (UVC) sterilization has the advantages of high efficiency, broad spectrum, and no secondary pollution. However, the emission wavelength of UVC phosphors still suffers from a large deviation from the golden sterilization wavelength of 265 nm and a low luminescence intensity. Herein, we report UVC emission near the golden sterilization wavelength as well as a long afterglow through crystal field engineering, which can lead to 100% sterilization efficiency. Combined with theoretical calculation and experimental studies, substitution of Ca 2+ with large-sized Sr 2+ could obtain slight expansion and distortion of cationic sites, resulting in a decrease in crystal field intensity and blue shift of Ca 1.5 Sr 0.5 Al 2 SiO 7 :1%Pr 3+ , and produce near golden UVC emission. Ca 1.5 Sr 0.5 Al 2 SiO 7 :1%Pr 3+ phosphor can effectively inactivate Staphylococcus aureus within 10 min, showing more efficiency than the traditional mercury lamp. This work provides an effective solution for the design and preparation of UVC phosphors using crystal field engineering toward near golden UVC emission.

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First-principles study of electronic structure and magnetism in SrO crystal contained cation defects

Cited by 7 publications

References 20 publications

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multi-mode Anti-counterfeiting

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multi-mode Anti-counterfeiting

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi³⁺ for Multimode Anticounterfeiting

Crystal Field Engineering of Pr-Activated Gehlenite with Near Golden Ultraviolet C Emission for 100% Sterilization Efficiency

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First-principles study of electronic structure and magnetism in SrO crystal contained cation defects

Cited by 7 publications

References 20 publications

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multi-mode Anti-counterfeiting

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multi-mode Anti-counterfeiting

Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi3+ for Multimode Anticounterfeiting

Crystal Field Engineering of Pr-Activated Gehlenite with Near Golden Ultraviolet C Emission for 100% Sterilization Efficiency

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Multiple Color Emission of Mechanoluminescence and Photoluminescence from SrZnSO: Bi³⁺ for Multimode Anticounterfeiting