Long-persistent phosphorescence in Eu2+-doped calcium borate chloride for optical data storage
Zeng, Wei1; Wang, Yujia1; Zheng, Mengqi1; Yang, Rui1; Luo, Yu1; Yi, Xin2; Zhang, Rongjia3
AbstractYellow-emitting optical data storage phenomena were observed in a series of Ca2BO3CI: Eu2+, Ln(3+) (Ln = La, Ce, Pr, Sm, Gd, Tb, Ho, Tm, Yb, Lu) long-persistent phosphors. Eu2+ in Ca2BO3CI could emit yellow light located at 580 nm ascribed to the 5d-4f transitions when optical data was being read out. As co-activators, Ln(3+) had various effects in causing afterglow and changing trap concentration. Optical data storage phenomena occurred for each combination of Eu2+ and Ln(3+) in calcium borate chloride host. Thereinto, prepared Ca2BO3CI: Eu2+, Ce3+ phosphor presented a decent afterglow and optical storage property. Its afterglow decay time was more than 1 h at room temperature and had a bright yellow optical signal at 473 K Ca2BO3CI: Eu2+, Ho3+ showed an optimum optical storage property, which remained bright yellow light even after 7 days of data storage. This outstanding optical data storage performance was mainly derived from Ho3+ increased the trap concentration of oxygen vacancies. The crystal structure, excitation and emission spectra, afterglow decay curves and thermoluminescence curves were measured and analyzed in all Eu2+ and Ln(3+) doped Ca2BO3CI samples. A simple optical data storage method was set up and effective optical signals were observed. Based on these results, detailed optical data storage processes and possible mechanism were studied and discussed. (C) 2020 Elsevier B.V. All rights reserved.
KeywordLuminescence Optical data storage Lanthanides Thermoluminescence
Indexed BySCI ; SCIE
Funding ProjectNational Natural Science Foundation of China[51863019] ; Scientific Research Ability Promotion Program of Young Teachers of Northwest Normal University[NWNU-LKQN-16-18]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000514848600057
EI Accession Number20200608129107
EI KeywordsOptical data storage
EI Classification Number547.2 Rare Earth Metals - 722.1 Data Storage, Equipment and Techniques - 741.1 Light/Optics - 933.1.1 Crystal Lattice
Source libraryWOS
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZeng, Wei
Affiliation1.Northwest Normal Univ, Key Lab Ecofunct Polymer Mat, Key Lab Ecoenvironm Polymer Mat Gansu Prov, Minist Educ,Coll Chem & Chem Engn, 967 Anning East Rd, Lanzhou 730070, Peoples R China;
2.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou 730050, Peoples R China;
3.Lanzhou Univ Technol, Sch New Energy, 66 Jiefang Rd, Jiuquan 735000, Peoples R China
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Zeng, Wei,Wang, Yujia,Zheng, Mengqi,et al. Long-persistent phosphorescence in Eu2+-doped calcium borate chloride for optical data storage[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,825.
APA Zeng, Wei.,Wang, Yujia.,Zheng, Mengqi.,Yang, Rui.,Luo, Yu.,...&Zhang, Rongjia.(2020).Long-persistent phosphorescence in Eu2+-doped calcium borate chloride for optical data storage.JOURNAL OF ALLOYS AND COMPOUNDS,825.
MLA Zeng, Wei,et al."Long-persistent phosphorescence in Eu2+-doped calcium borate chloride for optical data storage".JOURNAL OF ALLOYS AND COMPOUNDS 825(2020).
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