TY - JOUR

T1 - Fast response 4f15d1→4f2 emission and host-to-impurity energy transfer in Pr3+ doped Na3LuSi3O9 double salt silicate

AU - Li, Mengjiao

AU - Shi, Qiufeng

AU - Ivanovskikh, Konstantin V.

AU - Qiao, Jianwei

AU - Wang, Lei

AU - Guo, Haijie

AU - Huang, Ping

AU - Kiselev, Sviatoslav A.

AU - Pustovarov, Vladimir A.

N1 - This work was supported by the National Natural Science Foundation of China (No. 12204344 , 52102169 ), the Natural Science Foundation of Shanxi Province ( 20210302123127 ), Shanxi Scholarship Council of China ( 2022075 ), and the Young Elite Scientists Sponsorship Program by China Association for Science and Technology (No. YESS20200053 ). This work was partially supported by the Ministry of Science and Higher Education of Russia through the basic part of the government mandate, project No. FEUZ–2023–0013.

PY - 2023/11/1

Y1 - 2023/11/1

N2 - Understanding of host-to-impurity energy transfer process is crucial for the development of efficient and fast response scintillator materials. In this work, Pr3+ doped Na3LuSi3O9 (NLS) double salt silicate has been successfully synthesized using a high temperature solid-state reaction method and further comprehensively characterized by means of XRD measurements, crystal structure refinement, luminescence spectroscopic and time-domain study upon VUV-UV and X-ray synchrotron excitation, and thermally stimulated luminescence (TSL) study. Based on these results a model of host to Pr3+ 4f15d1 and 4f2 has been proposed. It has been demonstrated that NLS:Pr3+ has a good potential for fast response scintillator applications due to the presence of an efficient energy transfer from host electronic excitations to Pr3+ 4f15d1 states. The Pr3+ 4f15d1→4f2 emission reveals a good thermal stability and is characterized by a lifetime of about 16 ns. Upon pulse X-ray excitation the main fast decay component is accompanied by slower one with lifetime of about 64 ns that is ascribed to the presence of shallow traps which retrap carriers and cause appearance of delayed recombination. Parameters for the corresponding traps have been calculated based on the TSL glow curve analysis.

AB - Understanding of host-to-impurity energy transfer process is crucial for the development of efficient and fast response scintillator materials. In this work, Pr3+ doped Na3LuSi3O9 (NLS) double salt silicate has been successfully synthesized using a high temperature solid-state reaction method and further comprehensively characterized by means of XRD measurements, crystal structure refinement, luminescence spectroscopic and time-domain study upon VUV-UV and X-ray synchrotron excitation, and thermally stimulated luminescence (TSL) study. Based on these results a model of host to Pr3+ 4f15d1 and 4f2 has been proposed. It has been demonstrated that NLS:Pr3+ has a good potential for fast response scintillator applications due to the presence of an efficient energy transfer from host electronic excitations to Pr3+ 4f15d1 states. The Pr3+ 4f15d1→4f2 emission reveals a good thermal stability and is characterized by a lifetime of about 16 ns. Upon pulse X-ray excitation the main fast decay component is accompanied by slower one with lifetime of about 64 ns that is ascribed to the presence of shallow traps which retrap carriers and cause appearance of delayed recombination. Parameters for the corresponding traps have been calculated based on the TSL glow curve analysis.

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U2 - 10.1016/j.jlumin.2023.120134

DO - 10.1016/j.jlumin.2023.120134

M3 - Article

VL - 263

JO - Journal of Luminescence

JF - Journal of Luminescence

SN - 0022-2313

M1 - 120134

ER -