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Extend Afterglow Time of SrAl2Si2O8: Eu2+, Dy3+ Phosphor by Adding Boric Acid as Flux
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Juyu YANG1, Haojun YU1, Yangai LIU1, Jian CHEN2, Ruiyu MI1, Xiaoya BU1, Ci'an XIE1, Zhaohui HUANG1
Journal of the Chinese Ceramic Society | 2021, 49(9) : 1994 - 2000
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Journal of the Chinese Ceramic Society | 2021, 49(9): 1994-2000
• Research Article •
Extend Afterglow Time of SrAl2Si2O8: Eu2+, Dy3+ Phosphor by Adding Boric Acid as Flux
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Juyu YANG1, Haojun YU1, Yangai LIU1, Jian CHEN2, Ruiyu MI1, Xiaoya BU1, Ci'an XIE1, Zhaohui HUANG1
Affiliations
  • 1.School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
  • 2.Office of Scientific Research, Peking University Rd, Beijing 100871, China

    • YANG Juyu(1997-), male, Master candidate. E-mail:

About Author:

YANG Juyu(1997-), male, Master candidate. E-mail:

Published: 2021-09-20 doi: 10.14062/j.issn.0454-5648.20210215
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Long afterglow phosphors are widely used in fields such as optical storage and photocatalysis. Aluminosilicate has the advantages of good physical and chemical stability, thermal stability, high light conversion rate, low cost and emission bandwidth. The layered SrAl2Si2O8:Eu2+, Dy3+ phosphors with strontium feldspar structure were synthesized by high-temperature solid-state reaction method. The phosphor can be excited by 276 nm ultraviolet light to produce a broad emission band with a peak at 426 nm. Co-doped Dy3+ ions do not affect the crystal structure and emission peak position. Dy3+ is imported into the trap center to cause continuous light emission. The phosphor has excellent thermal stability, and it can maintain 90.5% of the initial luminous intensity at 200℃. The addition of H3BO3 flux does not affect the crystal structure. It improves the luminous intensity and prolongs the afterglow lifetime. After adding the flux, the lifetime can reach 122.3 s, and the quantum efficiency is increased by 30.2%. The luminous characteristics and afterglow lifetime can indicate that SrAl2Si2O8: Eu2+, Dy3+ phosphors have development potential in the field of long afterglow light emitting diodes (LEDs) in the future.

boric acid  /  flux  /  long afterglow phosphors  /  afterglow lifetime
杨举聿, 于灏君, 刘艳改, 陈健, 米瑞宇, 卜小雅, 谢赐桉, 黄朝晖. 利用助熔剂硼酸延长SrAl2Si2O8：Eu2+，Dy3+荧光粉的余辉长度. 硅酸盐学报, 2021 , 49 (9) : 1994 -2000 . DOI: 10.14062/j.issn.0454-5648.20210215
Juyu YANG, Haojun YU, Yangai LIU, Jian CHEN, Ruiyu MI, Xiaoya BU, Ci'an XIE, Zhaohui HUANG. Extend Afterglow Time of SrAl2Si2O8: Eu2+, Dy3+ Phosphor by Adding Boric Acid as Flux[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (9) : 1994 -2000 . DOI: 10.14062/j.issn.0454-5648.20210215
Appendix
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Year 2021 volume 49 Issue 9
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Article Info
doi: 10.14062/j.issn.0454-5648.20210215
  • Receive Date：2021-03-30
  • Online Date：2026-10-30
  • Published：2021-09-20
Article Data
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History
  • Received：2021-03-30
  • Revised：2021-04-13
Funding
Affiliations
    1.School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
    2.Office of Scientific Research, Peking University Rd, Beijing 100871, China

Corresponding:

LIU Yangai (1972-), female, Ph.D.,Professor. E-mail:
CHEN Jian (1989-), male, Ph.D., Assistance Researcher.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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