Highly luminescent zero-dimensional lead-free manganese halides forβ-ray scintillation
作者机构：School of Optical and Electronic InformationHuazhong University of Science and Technology1037 Luoyu RoadWuhan 430074China Hubei Key Laboratory of Bioinorganic Chemistry&Materia MedicaSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device EngineeringSchool of Physics and AstronomyYunnan UniversityKunming 650504China State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China Department of Physics and AstronomyUltrafast Photophysics of Quantum Devices LaboratoryClemson UniversityClemsonSC 29634USA Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Shenzhen Huazhong University of Science and Technology Research InstituteShenzhen 518057China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第9期
页 面：8486-8492页
核心收录：
学科分类：07[理学] 070303[理学-有机化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：the National Natural Science Foundation of China(Nos.61974052,11774239,and 61827815) the Fund from Science,Technology and Innovation Commission of Shenzhen Municipality(No.JCYJ20190809180013252) the Key Research and Development Program of Hubei Province(No.YFXM2020000188).
主 题：zero-dimensional metal halide hybrids radiation sterilization β-ray scintillation nanocrystals
摘 要：Because of their moderate penetration power,β-rays(high-energy electrons)are a useful signal for evaluating the surface contamination of nuclear radiation.However,the development ofβ-ray scintillators,which convert the absorbed high-energy electrons into visible photons,is hindered by the limitations of materials selection.Herein,we report two highly luminescent zerodimensional(0D)organic-inorganic lead-free metal halide hybrids,(C_(13)H_(30)N)_(2)MnBr_(4)and(C_(19)H_(34)N)_(2)MnBr_(4),as scintillators exhibiting efficientβ-ray scintillation.These hybrid scintillators combine the superior properties of organic and inorganic components.For example,organic components that contain light elements C,H,and N enhance the capturing efficiency ofβparticles;isolated inorganic[MnBr_(4)]2−tetrahedrons serve as highly localized emitting centers to emit intense radioluminescence(RL)underβ-ray excitation.Both hybrids show a narrow-band green emission peaked at 518 nm with photoluminescence quantum efficiencies(PLQEs)of 81.3%for(C_(13)H_(30)N)_(2)MnBr_(4)and 86.4%for(C_(19)H_(34)N)_(2)MnBr_(4),respectively.To enable the solution processing of this promising metal halide hybrid,we successfully synthesized(C_(13)H_(30)N)_(2)MnBr_(4)colloidal nanocrystals for the first time.Being excited byβ-rays,(C_(13)H_(30)N)_(2)MnBr_(4)scintillators show a linear response toβ-ray dose rate over a broad range from 400 to 2,800 Gy·s^(−1),and also display robust radiation resistance that 80%of the initial RL intensity can be maintained after an ultrahigh accumulated radiation dose of 240 kGy.This work will open up a new route for the development ofβ-ray scintillators.
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