5d → 4f transition of a lanthanide-activated MGa<sub>2</sub>S<sub>4</sub> (M = Ca, Sr) semiconductor for mechanical-to-light energy conversion mediated by structural distortion

Zhang, Xianhui; Yang, Dong; Wu, Shaofan; Xu, Xieming; Ma, Ronghua; Peng, Dengfeng; Wang, Zhilin; Wang, Shuai‐Hua

doi:10.1039/d2dt00883a

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…22 Their cost-effectiveness and eco-friendliness have become a central focus of contemporary research efforts. 23–28 Rare earth ions have strong light absorption capacity and high photoelectric conversion efficiency. 29 Given that green is one of the colors most easily captured by the human eye, developing green-emitting ML materials has become a priority.…”

Section: Introductionmentioning

confidence: 99%

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa₄O₈:xTb³⁺ without pre-excitation

Shi,

Liu,

et al. 2024

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa₄O₈:xTb³⁺ without pre-excitation

Shi,

Liu,

et al. 2024

RSC Adv.

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“…Considering the crystal structure of ZnGa 2 S 4 , which has [ZnS 4 ] tetrahedral structure units, these [ZnS 4 ] tetrahedral structure units are connected to form a layered structure through the angle sharing of S atoms, with Ga located between these layered structures. [ 27 ] Owing to its relatively small bandgap width and special crystal field comparable to those of ZnS, ZnGa 2 S 4 is expected to be more suitable for red ML emissions.…”

Section: Introductionmentioning

confidence: 99%

Novel Red Mechanoluminescence in Mn‐Doped ZnGa₂S₄ Crystal Phosphors via a Molten Salt Shielding Method

Zhu

Luo

Liang

et al. 2023

Laser & Photonics Reviews

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Owing to their unique characteristic of direct mechanical‐to‐optical energy conversion, mechanoluminescence (ML) crystals have drawn considerable interest for visible stress sensing, flexible and stretchable displays, and advanced anti‐counterfeiting. However, among the visible emissions of synthetic ML materials, high‐performance red‐emission semiconductors with ideal color‐rendering indices are relatively scarce, which restricts their future applications. In this work, red ML emission with CIE coordinates (0.6395 and 0.3572) in Mn‐doped ZnGa2S4 prepared by a molten salt shielding synthesis method in the air is reported. ZnGa2S4 has a cubic crystal structure composed of a layered [ZnS4] tetrahedral unit that plays an important role in efficient ML. Based on density functional theory calculations, the relationship between ML performance and crystal structure is revealed, which will help in the development of new high‐quality ML materials. The Mn‐doping of ZnGa2S4 causes a slight deformation of the crystal structure, leading to band bending and the formation of ML features in response to mechanical stimuli. The deep‐red ML emission of the ZnGa2S4:Mn crystals prepared by this method holds great promise for advanced flexible and stable displays and force/pressure sensor applications.

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Versatile and High‐Performance LiTaO₃:Tb³⁺, Gd³⁺ Perovskite for Multimode Anti‐counterfeiting, Flexible X‐Ray Imaging, Continuous Stress Sensing, and Non‐Real‐Time Recording

Lyu,

Dorenbos,

Wei

2023

Laser & Photonics Reviews

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Multimode luminescence relates to how charge carriers are transported and recombined in response to various physical excitations. It shows promising applications in many fields like advanced anti‐counterfeiting, information storage and encryption. Enabling a stable single compound with multimode luminescence is a unique technology but still remains a challenge. Herein, a versatile and high‐performance energy storage LiTaO3:0.01Tb3+,xGd3+ perovskite is discovered by utilizing the interplay of electron‐trapping defect levels and hole‐trapping Tb3+. It combines an excellent charge carrier storage capacity (≈7 and 12 times higher than state‐of‐the‐art BaFBr(I):Eu2+ and Al2O3:C), >1200 h storage duration, >40 h afterglow, efficient optically stimulated luminescence, persistent mechanoluminescence, and force‐induced charge carrier storage features. Particularly, it well responds to various stimuli channels, i.e., wide‐range X‐rays to 850 nm infrared photons, thermal activation, mechanical force grinding, or compression. To elucidate this multimode luminescence, charge carrier trapping and release processes in LiTaO3:0.01Tb3+,xGd3+ with various physical stimulations will be unraveled by combining the vacuum‐referred binding diagram construction, spectroscopy, thermoluminescence, and mechanoluminescence techniques. The versatile and high‐performance LiTaO3:0.01Tb3+,xGd3+ enables promising proof‐of‐concept multimode luminescence applications in advanced anti‐counterfeiting, flexible X‐ray imaging, continuous compression force sensing, and non‐real‐time recording.

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5d → 4f transition of a lanthanide-activated MGa₂S₄ (M = Ca, Sr) semiconductor for mechanical-to-light energy conversion mediated by structural distortion

Abstract: Materials exhibiting mechanoluminescence (ML) are a class of smart materials, in that both are capable of mechanical-to-light energy conversion. Thus, ML materials have been widely used in various electronic applications...

Cited by 6 publications

References 45 publications

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa₄O₈:xTb³⁺ without pre-excitation

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa₄O₈:xTb³⁺ without pre-excitation

Novel Red Mechanoluminescence in Mn‐Doped ZnGa₂S₄ Crystal Phosphors via a Molten Salt Shielding Method

Versatile and High‐Performance LiTaO₃:Tb³⁺, Gd³⁺ Perovskite for Multimode Anti‐counterfeiting, Flexible X‐Ray Imaging, Continuous Stress Sensing, and Non‐Real‐Time Recording

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5d → 4f transition of a lanthanide-activated MGa2S4 (M = Ca, Sr) semiconductor for mechanical-to-light energy conversion mediated by structural distortion

Abstract: Materials exhibiting mechanoluminescence (ML) are a class of smart materials, in that both are capable of mechanical-to-light energy conversion. Thus, ML materials have been widely used in various electronic applications...

Cited by 6 publications

References 45 publications

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa4O8:xTb3+ without pre-excitation

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa4O8:xTb3+ without pre-excitation

Novel Red Mechanoluminescence in Mn‐Doped ZnGa2S4 Crystal Phosphors via a Molten Salt Shielding Method

Versatile and High‐Performance LiTaO3:Tb3+, Gd3+ Perovskite for Multimode Anti‐counterfeiting, Flexible X‐Ray Imaging, Continuous Stress Sensing, and Non‐Real‐Time Recording

Contact Info

Product

Resources

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5d → 4f transition of a lanthanide-activated MGa₂S₄ (M = Ca, Sr) semiconductor for mechanical-to-light energy conversion mediated by structural distortion

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa₄O₈:xTb³⁺ without pre-excitation

Luminescence properties of a green-emitting mechanoluminescent phosphor CaSrGa₄O₈:xTb³⁺ without pre-excitation

Novel Red Mechanoluminescence in Mn‐Doped ZnGa₂S₄ Crystal Phosphors via a Molten Salt Shielding Method

Versatile and High‐Performance LiTaO₃:Tb³⁺, Gd³⁺ Perovskite for Multimode Anti‐counterfeiting, Flexible X‐Ray Imaging, Continuous Stress Sensing, and Non‐Real‐Time Recording