Mechanoluminescence properties of red-emitting piezoelectric semiconductor MZnOS:Mn&lt;sup&gt;2+&lt;/sup&gt; (M = Ca, Ba) with layered structure

Tu, Dong; Peng, Dengfeng; Xu, Chao‐Nan; Yoshida, Akihito

doi:10.2109/jcersj2.15301

Cited by 33 publications

(23 citation statements)

References 21 publications

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“…This research has led to the discovery of dozens of useful trap-controlled ML materials, the majority of which are based on luminescent ions doped inorganic materials containing aluminate, sulfide, silicate, titanate and phosphate, with a smaller number containing gallate, oxide, nitroxide, stannate, oxysulfide, and germanium silicate. The colors of the ML of these materials cover the entire visible range as highlighted in following list (in accordance with the reported order): ZnS:Mn (orange) [15], SrAl 2 O 4 :Eu 2+ (green) [16], Ca 2 Al 2 SiO 7 :Ce 3+ (blue) [82], ZnGa 2 O 4 :Mn 2+ (green) [84], MgGa 2 O 4 :Mn 2+ (green) [84], ZnAl 2 O 4 :Mn 2+ (green) [85], ZrO 2 :Ti 4+ (green) [86], ZnS:Mn 2+ ,Te 2+ (red) [87,88], (Ba,Ca)TiO 3 :Pr 3+ (red) [89], SrCaMgSi 2 O 7 :Eu 2+ (bluish-green) [90], SrAl 2 O 4 :Ce 3+ (ultraviolet, UV) [91], Ca 2 MgSi 2 O 7 :Eu 2+ (green) [92], CaYAl 3 O 7 :Eu 2+ (blue) [93], CaAl 2 Si 2 O 8 :Eu 2+ (blue) [94], SrBaMgSi 2 O 7 :Eu 2+ (deep blue) [95], BaSi 2 O 2 N 2 :Eu 2+ (bluish-green) [96][97][98], CaYAl 3 O 7 :Ce 3+ (deep blue) [99], SrAl 2 O 4 :Eu 2+ ,Er 3+ (near infrared, NIR) [20], SrAl 2 O 4 :Eu 2+ ,Nd 3+ (NIR) [124], SrMg 2 (PO 4 ) 2 :Eu 2+ (purple) [100], Sr 3 Sn 2 O 7 :Sm 3+ and Sr 2 SnO 4 :Sm 3+ (reddish-orange) [101], CaZ-nOS:Mn 2+ (red) [102], CaZr(PO 4 ) 2 :Eu 2+ (cyan) [103], ZnS:Cu (green) and ZnS:Cu,Mn 2+ (orange) [104], ZnS:Al 3+ ,Cu (green) and ZnS:Al 3+ ,Cu,Mn 2+ (cool white) [105], Zn 2 (Ge 0.9 Si 0.1 )O 4 :Mn 2+ (green) [106], CaZnOS:Cu (cyan) [107], CaZnOS:Er 3+ (green) [108], BaZnOS:Mn 2+ (orange, red) [109,110], CaZnOS:Sm 3+ (red)…”

Section: Trap-controlled MLmentioning

confidence: 99%

“…Equivalent substitution creates isoelectronic trap states that result from the discrepancies of host ions and dopant ions in terms of their electronegativity and covalent radius [146]. Equivalent substitutions occurs in certain semiconductors, for example where Mn 2+ substitutes for Zn 2+ in ZnS:Mn 2+ , CaZnOS:Mn 2+ and BaZnOS:Mn 2+ [109,110,[147][148][149]. Since the electronegativity of Mn is lower than that of Zn (1.55-1.65), Zn ions attract electrons as hole traps, and Mn ions combine with holes to function as electron traps.…”

Section: Trap Formationmentioning

confidence: 99%

“…The nature of the carrier traps associated with the ML process is poorly understood, in part because these traps cannot be detected directly. Indeed, even studies on an identical ML material have generated different conclusions on the nature of component carrier traps [15,16,[83][84][85][86][89][90][91][92][93][94][97][98][99][100][101][102][103][104][105][106][107][108][109][110][111][112][113][114]. In the following discussion, we analyze key aspects of two opposing models to explain the ML of SrAl 2 O 4 :Eu 2+ , in which hole and electron traps serve as the main carrier traps participating in ML process, respectively ( Fig.…”

Section: Trap Formationmentioning

confidence: 99%

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Trap-controlled mechanoluminescent materials

Zhang

Wang

Marriott

et al. 2019

Progress in Materials Science

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283

196

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Mechanoluminescence (ML) is generated during exposures of certain materials to mechanical stimuli. Many solid materials produce ML during their fracturing, however, the irreversibility of fracto-induced ML limits the practical applications of these materials. In 1999, Chao-Nan Xu discovered an intense and reproducible ML from trap-controlled materials, including ZnS:Mn 2+ and SrAl 2 O 4 :Eu 2+ , and introduced the principles and applications of hybrid inorganic/organic mechanoluminescent (ML) composites, and related sensors to visualize stress/strain in target structures. This discovery has triggered intense research interest in trap-controlled ML materials and composites over the past 2 decades. Notable achievements of this research include the development of trap-controlled materials that exhibit bright ML emission from the ultraviolet to the near infra-red, and multiscale mechano-optical sensitivities. This research has also increased our understanding of the mechanisms of ML phenomena, enabling the rational design of trap-controlled ML materials. Practical applications of ML are also being driven by the discovery that ML composites can serve as "mechano-optical sensitive skin" for structural health diagnosis, stress sensors for biomechanics, and mechanically-activated light sources. This review focuses on the design, synthesis, characterization, optimization and application of trap-controlled ML materials, and concludes with discussions on future directions of ML research and specific challenges to improve ML materials for real-world applications.

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Section: Trap-controlled MLmentioning

confidence: 99%

Section: Trap Formationmentioning

confidence: 99%

Section: Trap Formationmentioning

confidence: 99%

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Trap-controlled mechanoluminescent materials

Zhang

Wang

Marriott

et al. 2019

Progress in Materials Science

Self Cite

283

196

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show abstract

“…Interestingly, BaZnOS contains layers of vertex-linked [ZnO

_{2}

_{2}

] tetrahedra and adopts non-centrosymmetric space group Cmcm [207]. It gives red ML (634 nm) when doped with Mn

^{2 +}

, adding an example of ML in non-piezoelectric host [141,142]. …”

Section: Mechanoluminescent Compoundsmentioning

confidence: 99%

A Review of Mechanoluminescence in Inorganic Solids: Compounds, Mechanisms, Models and Applications

2018

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Mechanoluminescence (ML) is the non-thermal emission of light as a response to mechanical stimuli on a solid material. While this phenomenon has been observed for a long time when breaking certain materials, it is now being extensively explored, especially since the discovery of non-destructive ML upon elastic deformation. A great number of materials have already been identified as mechanoluminescent, but novel ones with colour tunability and improved sensitivity are still urgently needed. The physical origin of the phenomenon, which mainly involves the release of trapped carriers at defects with the help of stress, still remains unclear. This in turn hinders a deeper research, either theoretically or application oriented. In this review paper, we have tabulated the known ML compounds according to their structure prototypes based on the connectivity of anion polyhedra, highlighting structural features, such as framework distortion, layered structure, elastic anisotropy and microstructures, which are very relevant to the ML process. We then review the various proposed mechanisms and corresponding mathematical models. We comment on their contribution to a clearer understanding of the ML phenomenon and on the derived guidelines for improving properties of ML phosphors. Proven and potential applications of ML in various fields, such as stress field sensing, light sources, and sensing electric (magnetic) fields, are summarized. Finally, we point out the challenges and future directions in this active and emerging field of luminescence research.

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“…In recent years, CaZnOS has been actively studied for the long-lasting luminescence properties of its doped phases,a nd CaZ-nOS:Mn and CaZnOS:Cu are known. [15] Thus,i ts hould be possible to prepare CaZnOS:Fes amples,i nw hich FeOS 3 tetrahedra are well separated from each other. To simulate such samples,w ec onstruct a( 2a,2b,c) supercell of CaZnOS, which has eight Zn 2+ sites per supercell, and replace only one Zn 2+ ion with aF e 2+ ion per supercell.…”

mentioning

confidence: 99%

Single‐Domain Ferromagnet of Noncentrosymmetric Uniaxial Magnetic Ions and Magnetoelectric Interaction

2017

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The feasibility of a single-domain ferromagnet based on uniaxial magnetic ions was examined. For a noncentrosymmetric uniaxial magnetic ion of magnetic moment μ at a site of local electric dipole moment p, it is unknown to date whether μ prefers to be parallel or antiparallel to μ. The nature of this magnetoelectric interaction was probed in terms of analogical reasoning based on the Rashba effect and density functional theory (DFT) calculations. We show that μ and p prefer an antiparallel arrangement, predict that Fe-doped CaZnOS is a single-domain ferromagnet like a bar magnet, and find the probable cause for the ferromagnetism and weak magnetization hysteresis in Fe-doped hexagonal ZnO and ZnS at very low dopant concentrations.

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Mechanoluminescence properties of red-emitting piezoelectric semiconductor MZnOS:Mn<sup>2+</sup> (M = Ca, Ba) with layered structure

Cited by 33 publications

References 21 publications

Trap-controlled mechanoluminescent materials

Trap-controlled mechanoluminescent materials

A Review of Mechanoluminescence in Inorganic Solids: Compounds, Mechanisms, Models and Applications

Single‐Domain Ferromagnet of Noncentrosymmetric Uniaxial Magnetic Ions and Magnetoelectric Interaction

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