Photoinduced large polaron transport and dynamics in organic–inorganic hybrid lead halide perovskite with terahertz probes

Zuanming Jin; Yan Peng; Yuqing Fang; Zhijiang Ye; Zhiyuan Fan; Zhilin Liu; Xichang Bao; Heng Gao; Wei Ren; Jing Wu; Guohong Ma; Qianli Chen; Chao Zhang; Alexey V. Balakin; Alexander P. Shkurinov; Yiming Zhu; Songlin Zhuang

doi:10.1038/s41377-022-00872-y

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Photoinduced large polaron transport and dynamics in organic–inorganic hybrid lead halide perovskite with terahertz probes

Original Articles

- Photoinduced large polaron transport and dynamics in organic–inorganic hybrid lead halide perovskite with terahertz probes
- Light: Science & Applications Vol. 11, Issue 8, Pages: 1853-1864(2022)
- Affiliations：
  
  1.Terahertz Technology Innovation Research Institute, Terahertz Spectrum and Imaging Technology Cooperative Innovation Center, Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai, 200093, China
  2.Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
  3.Physics Department, Materials Genome Institute, State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of High Temperature Superconductors, International Centre of Quantum and Molecular Structures, Shanghai University, Shanghai, 200444, China
  4.Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Yutian Road 500, Shanghai, China
  5.Department of Physics, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
  6.University of Michigan – Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai, China
  7.School of Physics, University of Wollongong, Wollongong, NSW, 2522, Australia
  8.Department of Physics and International Laser Center, Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 19991, Russia
  9.ILIT RAS-Branch of the FSRC《Crystallography and Photonics》RAS, Svyatoozerskaya 1, 140700, Shatura, Moscow Region, Russia
- Author bio：
  
  Yan Peng (py@usst.edu.cn)
  Yiming Zhu (ymzhu@usst.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00872-y
  CLC：
- Published：31 August 2022，
  
  Published Online：06 July 2022，
  
  Received：19 January 2022，
  
  Revised：31 May 2022，
  
  Accepted：02 June 2022
- Accepted：
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Jin, Z. M. et al. Photoinduced large polaron transport and dynamics in organic–inorganic hybrid lead halide perovskite with terahertz probes. Light: Science & Applications, 11, 1853-1864 (2022).
DOI：

Jin, Z. M. et al. Photoinduced large polaron transport and dynamics in organic–inorganic hybrid lead halide perovskite with terahertz probes. Light: Science & Applications, 11, 1853-1864 (2022). DOI： 10.1038/s41377-022-00872-y.

摘要

Abstract

Organic-inorganic hybrid metal halide perovskites (MHPs) have attracted tremendous attention for optoelectronic applications. The long photocarrier lifetime and moderate carrier mobility have been proposed as results of the large polaron formation in MHPs. However

it is challenging to measure the effective mass and carrier scattering parameters of the photogenerated large polarons in the ultrafast carrier recombination dynamics. Here

we show

in a one-step spectroscopic method

that the optical-pump and terahertz-electromagnetic probe (OPTP) technique allows us to access the nature of interplay of photoexcited unbound charge carriers and optical phonons in polycrystalline CH

PbI

(MAPbI

) of about 10 μm grain size. Firstly

we demonstrate a direct spectral evidence of the large polarons in polycrystalline MAPbI

. Using the Drude–Smith–Lorentz model along with the Frӧhlich-type electron-phonon (e-ph) coupling

we determine the effective mass and scattering parameters of photogenerated polaronic carriers. We discover that the resulting moderate polaronic carrier mobility is mainly influenced by the enhanced carrier scattering

rather than the polaron mass enhancement. While

the formation of large polarons in MAPbI

polycrystalline grains results in a long charge carrier lifetime at room temperature. Our results provide crucial information about the photo-physics of MAPbI

and are indispensable for optoelectronic device development with better performance.

关键词

Keywords

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