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author：

He, X.-G. (He, X.-G..) [1] | Huang, D.-C. (Huang, D.-C..) [2] | Song, L.-P. (Song, L.-P..) [3] | Liang, S.-S. (Liang, S.-S..) [4] | Zhu, H.-M. (Zhu, H.-M..) [5]

Indexed by：

EI Scopus PKU CSCD

Abstract：

Near-infrared　phosphor-converted　light-emitting　diode（NIR　pc-LED）　light　source　has　a　great　application　prospect　in　medical　imaging，　food　detection，　sensing　and　other　aspects.　The　spectral　characteristic　and　photoelectric　conversion　efficiency　of　the　pc-LEDs　are　highly　dependent　on　the　performance　of　NIR　phosphors.　Currently，　the　development　of　inexpensive，　efficient，　and　thermally　stable　broadband　NIR　phosphors　remains　a　great　challenge.　Among　the　potential　broadband　NIR　phosphors，　the　Cr3+　activated　NIR　materials　have　attracted　serious　attentions　due　to　their　advantages　of　being　able　to　be　excited　efficiently　by　blue　light　and　tunable　emission　band.　In　this　study，　a　broadband　NIR　phosphor　NaAlP2O7∶Cr3+　was　successfully　synthesized　by　high　temperature　solid-state　method.　Under　450　nm　blue　light　excitation，　the　phosphor　shows　a　broadband　emission　covering　650-1　000　nm　with　a　peak　centered　at　~780　nm　and　a　full　width　at　half-maximum（FWHM）　of　1　580　cm-1.　Particularly，　at　423　K，　the　NaAlP2O7∶4%Cr3+　sample　retained　~71%　of　the　photoluminescence（PL）　intensity　at　room　temperature，　exhibiting　good　PL　thermal　stability.　Furthermore，　the　crystallographic　site　occupation　and　crystal　field　strength　parameter　of　Cr3+　ions　in　NaAlP2O7　host　were　investigated　based　on　the　structural　analysis　and　temperature-dependent（8-503　K）　spectra　of　the　phosphor.　The　zero-phonon　lines　of　Cr3+　energy　levels　were　determined　by　low　temperature　spectroscopy　at　8　K　and　theoretical　calculation.　The　PL　thermal　quenching　mechanism　of　Cr3+　was　discussed　in　combination　with　high　temperature　dependent　spectra.　In　summary，　this　work　presents　a　new　broadband　NIR　phosphor　for　application　in　NIR　pc-LEDs，　and　highlights　some　strategies　to　explore　this　class　of　materials.　©　2022　Chines　Academy　of　Sciences.　All　rights　reserved.

Keyword：

broadband emission electron-phonon coupling near-infrared phosphor photoluminescence thermal quenching

Community：

  • [ 1 ] [He, X.-G.]School of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [He, X.-G.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research, The Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 3 ] [He, X.-G.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Xiamen, 361021, China
  • [ 4 ] [Huang, D.-C.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research, The Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 5 ] [Huang, D.-C.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Xiamen, 361021, China
  • [ 6 ] [Song, L.-P.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research, The Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 7 ] [Song, L.-P.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Xiamen, 361021, China
  • [ 8 ] [Liang, S.-S.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research, The Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 9 ] [Liang, S.-S.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Xiamen, 361021, China
  • [ 10 ] [Zhu, H.-M.]School of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 11 ] [Zhu, H.-M.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research, The Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 12 ] [Zhu, H.-M.]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Xiamen, 361021, China
  • [ 13 ] [Zhu, H.-M.]Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, China

Reprint 's Address：

  • 朱浩淼

    [Huang, D.-C.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, China;;[Zhu, H.-M.]School of Chemistry, China

Email：


hdecai@jxust.edu.cn |
zhm@fjirsm.ac.cn
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Source ：

Chinese Journal of Luminescence

ISSN： 1000-7032

CN： 22-1116/O4

Year： 2022

Issue： 9

Volume： 43

Page： 1380-1389

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 12

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 2

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