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Persistent Luminescence Mechanism of Sr2MgSi2O7:Eu2+,Dy3+ Long Afterglow Material Based on First-Principles Calculations
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Xiaoyu YANG1, Xiangyu WANG2, Xuejuan CAO3, Boming TANG2, Ying YUAN2
Journal of the Chinese Ceramic Society | 2023, 51(3) : 775 - 782
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Journal of the Chinese Ceramic Society | 2023, 51(3): 775-782
• Research Articles •
Persistent Luminescence Mechanism of Sr2MgSi2O7:Eu2+,Dy3+ Long Afterglow Material Based on First-Principles Calculations
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Xiaoyu YANG1, Xiangyu WANG2, Xuejuan CAO3, Boming TANG2, Ying YUAN2
Affiliations
  • 1.School of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China
  • 2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  • 3.School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China

    • YANG Xiaoyu (1994-), female, Ph.D., Lecturer. E-mail:

About Author:

YANG Xiaoyu (1994-), female, Ph.D., Lecturer. E-mail:

Published: 2023-03-20 doi: 10.14062/j.issn.0454-5648.20220911
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Long afterglow materials are widely used, but their luminescence mechanism is difficult to be universally explained. For Sr2MgSi2O7:Eu2+, Dy3+ silicate long afterglow material with good luminescence-afterglow properties, the molecular models of Sr2MgSi2O7 substrate, Eu doped and (Eu,Dy) co-doped Sr2MgSi2O7 were constructed, and the first-principles calculations were carried out. From the perspective of electronic structure, the electron transition trapping path is revealed to explain the persistent luminescence mechanism of Sr2MgSi2O7:Eu2+, Dy3+. The results showed that the doping of Eu and Dy ions changed Sr2MgSi2O7 from an indirect band gap semiconductor to a direct band gap semiconductor. The Dy 5d state was mainly located between the Fermi level and the Eu 5d state, and it had energy overlap with the Eu 5d state, which confirmed the rationality of Dy3+ as an electron trap. The luminescence process of Sr2MgSi2O7:Eu2+, Dy3+ was revealed, which is helpful for the subsequent regulation and improvement of optical properties.

magnesium strontium silicate long afterglow material  /  first-principles calculation  /  luminescence mechanism  /  electron transition capture
杨晓宇, 王翔昱, 曹雪娟, 唐伯明, 袁颖. 基于第一性原理计算的Sr2MgSi2O7∶Eu2+，Dy3+长余辉材料持续发光机理. 硅酸盐学报, 2023 , 51 (3) : 775 -782 . DOI: 10.14062/j.issn.0454-5648.20220911
Xiaoyu YANG, Xiangyu WANG, Xuejuan CAO, Boming TANG, Ying YUAN. Persistent Luminescence Mechanism of Sr2MgSi2O7:Eu2+,Dy3+ Long Afterglow Material Based on First-Principles Calculations[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (3) : 775 -782 . DOI: 10.14062/j.issn.0454-5648.20220911
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Year 2023 volume 51 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20220911
  • Receive Date：2022-10-25
  • Online Date：2026-10-20
  • Published：2023-03-20
Article Data
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History
  • Received：2022-10-25
  • Revised：2022-12-11
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Affiliations
    1.School of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China
    2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
    3.School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
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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
species (%)
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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