Preparation and luminescence property of Eu2+, Mn2+ co-doped silicates phosphors for white LED

Chen, Z.; Zhang, J.H.; Chen, Song; Lin, Mao; He, Chao; Xu, G.D.; Wang, M.M.; Yu, Xiaodong; Zou, Junfeng; Guo, Kunping

doi:10.1016/j.jallcom.2015.01.270

Cited by 44 publications

(5 citation statements)

References 20 publications

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“…Silicate phosphors are interesting due to their high stability as compared to aluminates or sulfides. The preparation of different phosphors by SCS, such as yttrium, , cadmium, , or alkaline-earth − metal silicates, is more difficult than other complex multielement compounds. Typically, the reactive solution that is utilized to prepare these nanophosphors involves metal nitrates, fuels, and high surface area silica.…”

Section: Solution Combustion-derived Materialsmentioning

confidence: 99%

Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

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Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.

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Section: Solution Combustion-derived Materialsmentioning

confidence: 99%

Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

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“…They all share the same blue–green emission colour, as they all contain Eu 2+ as the luminescence centre. Other emission colours are much less frequent, although there are a few materials that are non-Eu doped, but the afterglow time is significantly smaller [12,13]. The overall conclusion is that the number of known efficient compounds that exhibit a long-lasting afterglow is still quite low and SrAl 2 O 4 :Eu,Dy is still one of the best persistent luminescent materials that is available, judging by the afterglow duration and intensity.…”

Section: Sral2o4 As a Host Materialsmentioning

confidence: 99%

Recent progress in understanding the persistent luminescence in SrAl₂O₄:Eu,Dy

Vitola

Millers

Bite

et al. 2019

Materials Science and Technology

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Ever since the discovery of SrAl2O4:Eu,Dy persistent afterglow material, that can intensively glow up to 20 h, the mechanism of long-lasting luminescence has been a popular area of research. The research is focused on discovering the mechanism of persistent luminescence in order to prolong the duration and intensity of afterglow in a controlled way. Although most researchers agree on the general things, there are still many unclarities and ambiguities to discuss upon. This review paper briefly sketches in the highlights of past research on the luminescence mechanism in SrAl2O4:Eu,Dy, mainly focusing on the research conducted in the past decade dedicated to clearing these ambiguities. This paper provides an overview of the latest persistent luminescence mechanisms offered by researchers.

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“…As the fourth generation "green" lighting source has higher efficiency, higher reliability, longer lifetime and more compact size compared with traditional lamp-based lighting systems, white light emitting diodes (WLEDs) have been paid attention and got abroad application. So the research of WLEDs has been one of current hot issues [1][2][3][4][5][6][7][8][9][10][11]. At present, to realize the white light, WLEDs were fabricated by a variety combination mechanism of LED chips or by a light conversion of phosphors, while the white light conversion principle mainly can be classified to the mixture of red, green and blue colors, which were called three primary colors, and the overlapping two colors of blue and yellow [12,13].…”

Section: Introductionmentioning

confidence: 99%

A Promising Energy-Saving and Environmental-Friendly Lighting Device: High CRI White LED with Phosphor Materials

Liu

Zhou

et al. 2016

MSF

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Two kinds of commercial LED phosphors (green phosphor LuAG:Ce3+ and red phosphor CaAlSiN3:Eu2+) with polymethyl methacrylate (PMMA) powders were mixed to prepare film phosphors with tunable emission peak in photoluminescence spectrum by flat vulcanizing machine under the temperature of 170 oC and pressure of 2 MPa. The physical phase, surface morphology, transmittance, luminescence spectra of samples were characterized by means of X-ray diffraction (XRD), Environmental scanning electron microscopy (ESEM), Ultraviolet-Visible (UV-Vis) spectrophotometry and Fluorescence spectrometer. The results show that the film phosphors phase was consistent with raw phosphors, phosphor particles were uniformly distributed, and fluorescence spectra with different proportions of phosphors in different position can be adjusted. Tested by HSP 3000 spectrum analyzer, the white LEDs fabricated by blue chip and composite film phosphor containing 5 wt% green phosphor and 1.5 wt.% red phosphor, which refers to the remote excitation technique, possessed color coordinate of (0.3715, 0.3280) and color rendering index (CRI) of 87 when it was driven at power of 36 V/140 mA, reaching the international advanced level.

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Preparation and luminescence property of Eu2+, Mn2+ co-doped silicates phosphors for white LED

Cited by 44 publications

References 20 publications

Solution Combustion Synthesis of Nanoscale Materials

Solution Combustion Synthesis of Nanoscale Materials

Recent progress in understanding the persistent luminescence in SrAl₂O₄:Eu,Dy

A Promising Energy-Saving and Environmental-Friendly Lighting Device: High CRI White LED with Phosphor Materials

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Preparation and luminescence property of Eu2+, Mn2+ co-doped silicates phosphors for white LED

Cited by 44 publications

References 20 publications

Solution Combustion Synthesis of Nanoscale Materials

Solution Combustion Synthesis of Nanoscale Materials

Recent progress in understanding the persistent luminescence in SrAl2O4:Eu,Dy

A Promising Energy-Saving and Environmental-Friendly Lighting Device: High CRI White LED with Phosphor Materials

Contact Info

Product

Resources

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Recent progress in understanding the persistent luminescence in SrAl₂O₄:Eu,Dy