Matter and Radiation at Extremes, Volume. 6, Issue 5, 058401(2021)

Pressure-induced robust emission in a zero-dimensional hybrid metal halide (C9NH20)6Pb3Br12

Mengting Chen1... Songhao Guo1, Kejun Bu1, Sujin Lee2, Hui Luo1, Yiming Wang1, Bingyan Liu1, Zhipeng Yan1, Hongliang Dong1, Wenge Yang1, Biwu Ma2 and Xujie Lü1,a) |Show fewer author(s)
Author Affiliations
  • 1Center for High Pressure Science and Technology Advanced Research (HPSTAR), 1690 Cailun Road, Shanghai 201203, People’s Republic of China
  • 2Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32310, USA
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    Figures & Tables(5)
    In situ emission measurements of (bmpy)6[Pb3Br12] under high pressure. (a) PL spectra at selected pressures. The insets show the pressure-induced emission at 1.6 GPa and the robust emission at 80 GPa. The small kinks at around 2.25 eV are caused by the dichroic beam splitter (FF376-Di01, Semrock) in our measurement system. (b) Integrated PL intensity as a function of pressure. (c) Fluorescent images at selected pressures.
    Bandgap evolution of (bmpy)6[Pb3Br12] under high pressure. (a) UV-vis absorption spectra at high pressures. (b) Bandgap as a function of pressure. The insets show optical micrographs at selected pressures. (c) Bandgap evolution of (bmpy)6[Pb3Br12] compared with other hybrid metal halides, where the data are collected from the literature.29–36
    In situ structural characterizations of (bmpy)6[Pb3Br12] under high pressure. (a) Schematic crystal structure of (bmpy)6[Pb3Br12] along different crystallographic axes and the [Pb3Br12]6− trimer cluster. (b) XRD patterns at selected pressures. (c) Lattice constants and a/c ratio as a function of pressure. (d) Evolution of unit-cell volumes.
    (a) PL emerging and quenching pressures of (bmpy)6[Pb3Br12] in comparison with those of other 0D and 1D metal halides. (b) Stokes shift and phonon energy as functions of pressure. (c) Schematic of pressure-induced emission from excitons. GS and ES indicate the ground state and excited state, respectively.
    • Table 1. Summary of PL emerging and quenching pressures for various metal halides.

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      Table 1. Summary of PL emerging and quenching pressures for various metal halides.

      Chemical formulaDimensionPIE pressure (GPa)PL quenching pressure (GPa)Reference
      (bmpy)9[ZnBr4]2[Pb3Br11]0DAmbient18.235
      (CH3NH3)3Bi2I90DAmbient9.036
      Cs4PbBr60D3.0118.2314
      Cs3Bi2I90DAmbient9.344
      C4N2H14PbBr41DAmbient9.042
      C4N2H14PbBr41DAmbient24.8143
      C4N2H14SnBr41D2.0620.0224
      CH3(CH2)2NH3PbBr31DAmbient7.334
      CsCu2I31DAmbient16.039
      (BA)2PbI42DAmbient1045
      (BA)2PbI42DAmbient12.632
      (PEA)2PbBr42DAmbient15.646
      (PEA)2PbI42DAmbient7.647
      (HA)2(GA)Pb2I72DAmbient9.4825
      (BA)2(MA)Pb2I72DAmbient4.731
      (GA)(MA)2Pb2I72DAmbient7.048
      (BA)4AgBiBr82D2.525.049
      (CH3NH3)PbCl33DAmbient7.250
      (CH3NH3)PbBr33DAmbient4.8550
      (CH3NH3)PbBr33DAmbient4.051
      (CH3NH3)PbI3DAmbient2.752
      (CH3NH3)PbI1.2Br1.83DAmbient1.653
      CsPb2Br53DAmbient2.2354
      Cs2AgBiCl63DAmbient8.055
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    Mengting Chen, Songhao Guo, Kejun Bu, Sujin Lee, Hui Luo, Yiming Wang, Bingyan Liu, Zhipeng Yan, Hongliang Dong, Wenge Yang, Biwu Ma, Xujie Lü. Pressure-induced robust emission in a zero-dimensional hybrid metal halide (C9NH20)6Pb3Br12[J]. Matter and Radiation at Extremes, 2021, 6(5): 058401

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    Paper Information

    Category: High Pressure Physics and Materials Science

    Received: Jun. 2, 2021

    Accepted: Aug. 6, 2021

    Published Online: Oct. 19, 2021

    The Author Email: Lü Xujie (xujie.lu@hpstar.ac.cn)

    DOI:10.1063/5.0058821

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