Creating visible-to-near-infrared mechanoluminescence in mixed-anion compounds SrZn2S2O and SrZnSO

Chen, Changjian; Zhuang, Yixi; Tu, Dong; Wang, Xiandi; Pan, Chaofeng; Xie, Rong‐Jun

doi:10.1016/j.nanoen.2019.104329

Cited by 91 publications

(71 citation statements)

References 32 publications

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“…SrZn 2 S 2 O, as a newly discovered oxysulfide semiconductor with close-packed corrugated double layers of ZnS 3 O tetrahedron in its crystal structure, was first reported by Hans-Conrad zur Loye's group (Tsujimoto et al, 2018) and found to function as a high-stable photocatalyst capable of reducing and oxidizing water (Nishioka et al, 2019). Deducing from its non-central symmetry crystal structure and appropriate band structure, impurity-doped SrZn 2 S 2 O could have good ML performance, which was already proved recently (Chen et al, 2020). Herein, we report Mn 2+ -doped SrZn 2 S 2 O material could simultaneously respond to UV light or X-ray exposure or mechanical actions with intense orange emission and realize multiple-energy conversions.…”

Section: Introductionmentioning

confidence: 91%

“…Among these, some typical oxysulfides notably enriched the color of ML emission due to its good acceptance for a large number of activators (Zhang et al, 2013 , 2015 ). It is proved that some new oxysulfide semiconductors that doped with luminescent ions, for instance, transitional metals and lanthanide ions doped CaZnOS (Huang, 2016 ; Huang et al, 2017 ; Du et al, 2019 ), SrZnOS (Chen et al, 2020 ), and BaZnOS (Li et al, 2016 ) single compounds as well as CaZnOS-ZnS heterojunctions (Peng et al, 2020 ) show novel ML performances that result in diverse applications. Meanwhile, some oxysulfides, such as Gd 2 O 2 S-based luminescent material (Büchele et al, 2015 ), has been commercialized and confirmed to be good X-ray phosphors.…”

Section: Introductionmentioning

confidence: 99%

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Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Mao

Wang

et al. 2020

Front. Chem.

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Under the excitation of ultraviolet, X-ray, and mechanical stress, intense orange luminescence (Mn 2+ , 4 T 1 → 6 A 1) can be generated in Mn 2+-doped SrZn 2 S 2 O crystal in orthorhombic space group of Pmn2 1. Herein, the multiple energy conversion in SrZn 2 S 2 O:Mn 2+ , that is, photoluminescence (PL), X-ray-induced luminescence, and mechanoluminescence, is investigated. Insight in luminescence mechanisms is gained by evaluating the Mn 2+ concentration effects. Under the excitation of metal-to-ligand charge-transfer transition, the most intense PL is obtained. X-ray-induced luminescence shows similar features with PL excited by band edge UV absorption due to the same valence band to conduction band transition nature. Benefiting much from trap levels introduced by Mn 2+ impurities, the quenching behavior mechanoluminescence is more like the directly excited PL from Mn 2+ d-d transitions. Interestingly, this concentration preference leads to varying degrees of spectral redshift in each mode luminescence. Further, SrZn 2 S 2 O:Mn 2+ exhibits a good linear response to the excitation power, which makes it potential candidates for applications in X-ray radiation detection and mechanical stress sensing.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Mao

Wang

et al. 2020

Front. Chem.

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“…2a ) 38 . The mixed-anion polyhedrons offer local asymmetry for the central cations and form an asymmetric piezoelectric crystal structure by periodic arrangement 39 . Regarding the emitting centre, Eu 2+ showed large absorbance in the wavelength range from 250 to 450 nm and gave high-efficiency green emission in SrSi 2 O 2 N 2 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Force-induced charge carrier storage: a new route for stress recording

et al. 2020

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Stress sensing is the basis of human-machine interface, biomedical engineering, and mechanical structure detection systems. Stress sensing based on mechanoluminescence (ML) shows significant advantages of distributed detection and remote response to mechanical stimuli and is thus expected to be a key technology of next-generation tactile sensors and stress recorders. However, the instantaneous photon emission in ML materials generally requires real-time recording with a photodetector, thus limiting their application fields to real-time stress sensing. In this paper, we report a force-induced charge carrier storage (FICS) effect in deep-trap ML materials, which enables storage of the applied mechanical energy in deep traps and then release of the stored energy as photon emission under thermal stimulation. The FICS effect was confirmed in five ML materials with piezoelectric structures, efficient emission centres and deep trap distributions, and its mechanism was investigated through detailed spectroscopic characterizations. Furthermore, we demonstrated three applications of the FICS effect in electronic signature recording, falling point monitoring and vehicle collision recording, which exhibited outstanding advantages of distributed recording, long-term storage, and no need for a continuous power supply. The FICS effect reported in this paper provides not only a breakthrough for ML materials in the field of stress recording but also a new idea for developing mechanical energy storage and conversion systems.

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“…Mechanoluminescent (ML) materials that can quantitatively convert mechanical stimuli into light emission have drawn great attention due to potential applications ranging from stress distribution visualization [1,2] and structural health diagnosis [3][4][5] to light sources [6][7][8][9][10][11][12][13] and anti-counterfeiting [14][15][16]. Dozens of inorganic ML materials with reproducible mechanoluminescence (ML) have been developed during the past two decades [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…However, the continuous UV radiation simultaneously excites photoluminescence of phosphors, which reduces the signal-to-noise ratio of ML. Therefore, it is still a significant challenge to realize Materials 2020, 13, 1410 2 of 9 non-decaying ML in trap-controlled reproducible ML materials from the aspects of not only proposing feasible solutions but also advancing practical applications.…”

Section: Introductionmentioning

confidence: 99%

Short-Term Non-Decaying Mechanoluminescence in Li2MgGeO4:Mn2+

Zhu

Jiang

et al. 2020

Materials

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Trap-controlled mechanoluminescent (ML) materials characterized by reproducible mechanoluminescence (ML) after irradiation recharging have shown attractive prospects in applications including stress distribution visualization, stress-driven light sources, and anti-counterfeiting. However, these materials generally suffer from the difficulty of achieving non-decaying ML when subjected to continuous mechanical stimulation. Herein, we develop a trap-controlled reproducible ML material, Li2MgGeO4:Mn2+, and report its short-term non-decaying ML behavior. Investigation of trap properties suggests that the unique non-decaying ML behavior should arise from the deep traps existing in Li2MgGeO4:Mn2+, which provide electron replenishment for shallow traps that release small numbers of electrons during short-term cyclic friction. Our results are expected to provide a reference for the ultimate achievement of long-term non-decaying ML in such materials.

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Creating visible-to-near-infrared mechanoluminescence in mixed-anion compounds SrZn2S2O and SrZnSO

Cited by 91 publications

References 32 publications

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Luminescence in Manganese (II)-Doped SrZn2S2O Crystals From Multiple Energy Conversion

Force-induced charge carrier storage: a new route for stress recording

Short-Term Non-Decaying Mechanoluminescence in Li2MgGeO4:Mn2+

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