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author：

Li, H. (Li, H..) [1] | Niu, Y. (Niu, Y..) [2] | Haider, A.A. (Haider, A.A..) [3] | Liu, C. (Liu, C..) [4] | You, C. (You, C..) [5] | Zhang, H. (Zhang, H..) [6] | Jiang, H. (Jiang, H..) [7] | Li, J. (Li, J..) [8] | Huang, Y. (Huang, Y..) [9] | Wang, S. (Wang, S..) [10] | Gao, D. (Gao, D..) [11] | Huang, S. (Huang, S..) [12] | Zhu, J. (Zhu, J..) [13]

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Scopus

Abstract：

Double-perovskite-type　near-infrared　(NIR)　phosphors　have　emerged　as　a　desirable　research　hotspot,　benefiting　from　the　B/B＇O6　coordinations　suitable　for　Cr3+　luminescence.　However,　NIR　efficiency　and　thermostability　maintain　challenging.　Meanwhile,　the　precise　identification　of　the　Cr3+　occupancy　appears　to　be　particularly　important　due　to　the　abundant　cation　sites　in　double-perovskite　structure.　Herein,　this　research　reported　a　Cr3+-activated　A2BB＇O6　(Ca2AlTaO6)　NIR　phosphor　with　high　luminescence　heat-resistance　(94　%@423　K).　Under　444　nm　excitation,　Ca2AlTaO6:1.2　%Cr3+　exhibits　sharp　emission　originating　from　the　2Eg→4A2　transition　of　Cr3+.　The　visualized　proof　provided　by　aberration-corrected　transmission　electron　microscopy　and　spectral　analysis　confirm　that　Cr3+　simultaneously　occupies　[BO6]　and　[B＇O6]　sites.　Moreover,　the　B　site　regulation　by　Ga3+　boosts　luminescent　efficiency　1.5　times.　The　Ca2Al0.8Ga0.2TaO6:1.2　%Cr3+-converted　NIR　LED　device　demonstrates　stable　photoelectric　performance　under　high　current　over　an　extended　period.　Subsequently,　the　fascinating　material　is　successfully　demonstrated　via　the　multifunctional　applications　in　non-destructive　detection,　night　vision,　and　plant　growth　lighting.　This　work　provides　valuable　insights　for　constructing　better　double-perovskite-type　NIR-emitting　materials.　©　2025　Elsevier　B.V.

Keyword：

Double-perovskite Night vision NIR phosphor Non-destructive detection Plant growth lighting

Community：

  • [ 1 ] [Li H.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 2 ] [Niu Y.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 3 ] [Haider A.A.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 4 ] [Liu C.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 5 ] [You C.]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 6 ] [Zhang H.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 7 ] [Jiang H.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 8 ] [Li J.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 9 ] [Huang Y.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China
  • [ 10 ] [Wang S.]Electron Microscopy Center, Yunnan University, Kunming, 650091, China
  • [ 11 ] [Gao D.]Electron Microscopy Center, Yunnan University, Kunming, 650091, China
  • [ 12 ] [Huang S.]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 13 ] [Zhu J.]Yunnan Key Laboratory of Electromagnetic Materials and Devices, School of Materials and Energy, Yunnan University, Kunming, 650091, China

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Source ：

Chemical Engineering Journal

ISSN： 1385-8947

Year： 2025

Volume： 510

1 3 . 4 0 0

JCR@2023

CAS Journal Grade：1

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ESI Highly Cited Papers on the List： 0 Unfold All

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