Fabrication and study of properties of the PLA/Sr2MgSi2O7:Eu2+, Dy3+ long-persistent luminescence composite thin films

Zhang, Xingxing; Zhou, Zhufa; Ye, Feng; Liu, Xu; Li, Qiru

doi:10.1016/j.mssp.2015.06.029

Cited by 14 publications

(7 citation statements)

References 36 publications

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“…In recent years, Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ luminescent materials have become the focus of extensive investigation for their afterglow properties [1][2][3][4][5] . Zhang et al [6] synthesized Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ particles via the sol-gel method and modified them with 3-aminopropyltriethoxysilane to improve dispersibility and compatibility in the polylactic acid matrix. Their results indicated the decay curves of the composite films to have a similar tendency to the pure Sr 2 MgSi 2 O 7 :Eu 2+ , Dy 3+ particles.…”

Section: Introductionmentioning

confidence: 99%

Enhanced afterglow properties of Nd3+ co-doped Sr2MgSi2O7: Eu2+, Dy3+ synthesized by sol–gel method

Wang

Zuo

et al. 2016

Ceramics International

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In this study, Sr 1.94 MgSi 2 O 7 : 0.02Eu 2+ , 0.04Dy 3+ and Sr 1.928 MgSi 2 O 7 : 0.02Eu 2+ , 0.04Dy 3+ , 0.012Nd 3+ long afterglow luminescent materials were successfully synthesized via the sol-gel method under reducing atmosphere at 1100 o C for 3 h. No phase structure effect of Sr 2 MgSi 2 O 7 , or significant lattice distortion occurred while a small amount of rare earth ions were doped. Moreover, co-doping Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ with Nd 3+ has virtually no effect on the morphology of Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+. Co-doping Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ with Nd 3+ has also no evident effect on the position of the fluorescence emission peak. However, the applied concentration of Nd 3+ co-doping created deeper traps and enhanced the afterglow properties of Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ .

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Section: Introductionmentioning

confidence: 99%

Enhanced afterglow properties of Nd3+ co-doped Sr2MgSi2O7: Eu2+, Dy3+ synthesized by sol–gel method

Wang

Zuo

et al. 2016

Ceramics International

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“…These fibers can be luminous in the dark for more than 10 h after excited by ultraviolet (UV) or visible light for a few minutes. [1][2][3][4] Because the emission color of most commercial rare-earth luminescent materials is mainly restricted from the blue to the green region, the afterglow color of the fibers is mainly green and blue. There are no excellent red-emitting persistent luminescent materials applied in fibers.…”

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confidence: 99%

Preparation and characterization of new red luminescent fibers based on a multilayer structure

Zheng

Zhu

Pang

et al. 2021

Textile Research Journal

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Composite red luminescent material SMED/LCA (Sr2MgSi2O7:Eu2+,Dy3+/light conversion agent) is a phosphor with long afterglow, which was prepared by LCA and SMED at a certain mass ratio. It has excellent characteristics, such as high lightness and emitting red light, but poor stability properties because LCA falls off easily from the surface of SMED. Here, SiO2 (Al2O3 or MgF2) was coated on the surface of SMED/LCA through the heterogeneous deposition method to prepare a stable composite phosphor, adding coated phosphor into a polyacrylonitrile (PAN) fiber-forming polymer and wet spinning to form SMED/LCA-PAN (composite red light-emitting fiber). The surface element distribution, phase structure and luminescence properties of SMED/LCA-PAN were characterized. The results show that SiO2 (Al2O3 or MgF2) is successfully coated on the surface of the material, and the coating has no effect on the phase of SMED in the fibers. The intensity red/blue ratio (Int.600 nm versus Int.470 nm) of coated SMED/LCA fiber in the afterglow emission spectrum increases by about 1.9 times; the increase in energy conversion efficiency indicates the enhancement of the red light effect. In addition, the afterglow initial brightness is up to 0.148 cd/m2 after 15 min of ultraviolet light excitation, and the luminous fiber still has high afterglow brightness.

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“…This type of material could solve the abovementioned issues. To the best of our knowledge,a lthough long afterglow materials have been used in many fields,s uch as safety displays,b iological imaging,a nd light sources, [8][9][10][11][12][13] there are no reports on such materials being directly applied in photocatalytic hydrogen production.Long afterglow materials mainly include rare earth-doped aluminate,s ilicate,s tannite,p hosphate,g allate,a nd germanate. [14] Among them, silicate long afterglow materials have the advantages of ah igh luminescence intensity,l ong afterglow time,e xcellent chemical stability and low cost, making them suitable for use as photocatalysts.…”

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confidence: 99%

mentioning

confidence: 99%

“…Four peaks centered at 1164.66 eV,1 154.19 eV,1 135.06 eV, and 1124.94 eV in the Eu 3d binding energy region were ascribed to Eu 3+ 3d3/2, Eu 2+ 3d3/2, Eu 3+ 3d5/2, and Eu 2+ 3d5/2 ( Figure 4b); two peaks centered at 1297.43 eV and 152.88 eV were assigned to Dy 3+ 3d and Dy 3+ 4d (Figure 4c), respectively. [13,21,22] Furthermore,t he doping of rare earth ions can cause lattice distortion of the Sr 2 MgSi 2 O 7 matrix and create surface defects which can be observed in the HRTEM images (Supporting Information, Figure S2). It is ascribed to the presence of large number of oxygen vacancies, [23][24][25] which is further confirmed by EPR spectra.…”

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confidence: 99%

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Round‐the‐Clock Photocatalytic Hydrogen Production with High Efficiency by a Long‐Afterglow Material

et al. 2018

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Long afterglow materials can store and release light energy after illumination. A brick‐like, micrometer‐sized Sr2MgSi2O7:Eu2+,Dy3+ long‐afterglow material is used for hydrogen production by the photocatalytic reforming of methanol under round‐the‐clock conditions for the first time, achieving a solar‐to‐hydrogen (STH) conversion efficiency of 5.18 %. This material is one of the most efficient photocatalysts and provides the possibility of practical use on a large scale. Its remarkable photocatalytic activity is attributed to its unique carrier migration path and large number of lattice defects. These findings expand the application scope of long afterglow materials and provide a new strategy to design efficient photocatalysts by constructing trap levels that can prolong carrier lifetimes.

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Fabrication and study of properties of the PLA/Sr2MgSi2O7:Eu2+, Dy3+ long-persistent luminescence composite thin films

Cited by 14 publications

References 36 publications

Enhanced afterglow properties of Nd3+ co-doped Sr2MgSi2O7: Eu2+, Dy3+ synthesized by sol–gel method

Enhanced afterglow properties of Nd3+ co-doped Sr2MgSi2O7: Eu2+, Dy3+ synthesized by sol–gel method

Preparation and characterization of new red luminescent fibers based on a multilayer structure

Round‐the‐Clock Photocatalytic Hydrogen Production with High Efficiency by a Long‐Afterglow Material

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