UV-C emitting phosphors of Pr3+-doped fluoroborate nano-glass composites for disinfection and as fast scintillators - Details

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To　overcome　the　challenges　associated　with　conventional　ultraviolet-C　(UV-C)　light-emitting　devices—such　as　toxic　mercury,　aging　of　organic　adhesives,　and　various　stability　concerns—an　efficient　UV-C　emitting　nano-glass　composite　(nano-GC)　has　been　developed.　The　transparent　nano-GCs　embedded　with　Pr3+-doped　Li(Al7B4O17)　nanocrystals　(NCs),　achieved　through　precise　modulation　of　the　fluoride　content　in　the　glass　matrix　network.　The　unique　architecture　of　these　nano-GCs　synergistically　combines　the　high　luminescence　efficiency　characteristic　of　a　crystalline　phase　with　the　robustness　of　glass.　Upon　excitation　by　deep-UV,　X-ray　and　high　energy　electron-beams,　the　nano-GCs　exhibit　pronounced　5d-4f　interconfigurational　emissions　of　Pr3+,　with　their　emission　profile　closely　aligning　with　the　germicidal　effectiveness　curve.　Although　the　transmittance　of　nano-GCs　is　reduced　compared　to　that　of　precursor　glass　(PG),　their　UV-C　luminescence　output　is　significantly　enhanced—e.g.,　a　sixfold　increase　under　e-beam　pumping.　These　nano-GCs　achieve　an　impressive　photoluminescence　quantum　yield　of　up　to　25.93%,　surpassing　most　previously　reported　Pr3+　doped　glasses　and　nano-GCs.　Moreover,　the　nano-GCs　exhibit　robust　X-ray　excited　luminescence,　with　an　intensity　more　than　twice　that　of　the　commercial　Bi4Ge3O12　(BGO)　crystal,　and　exhibit　a　highly　linear　response　to　X-ray　dose,　accompanied　by　a　decay　time　of　24.13　ns　under　γ-ray　excitation.　Collectively,　this　study　presents　a　novel　approach　to　the　development　of　disinfection　phosphors　and　fast　scintillators.　©　2025　The　Royal　Society　of　Chemistry.

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[ 1 ] [Wang S.]Key Laboratory of In-fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 2 ] [Wang S.]Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 3 ] [Wu Z.]Key Laboratory of In-fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 4 ] [Wu Z.]Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 5 ] [Sun L.]Zhicheng College, Fuzhou University, Fuzhou, 350002, China
[ 6 ] [Ren J.]Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China
[ 7 ] [Zheng X.]Key Laboratory of In-fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 8 ] [Zheng X.]Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 9 ] [Zhang J.]Key Laboratory of In-fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 10 ] [Zhang J.]Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 11 ] [Ren J.]Key Laboratory of In-fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
[ 12 ] [Ren J.]Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China

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Journal of Materials Chemistry C

ISSN： 2050-7526

Year： 2025

Issue： 12

Volume： 13

Page： 6302-6308

5 . 7 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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