Experimental Demonstration of Correlated Flux Scaling in Photoconductivity and Photoluminescence of Lead-Halide Perovskites

  title={Experimental Demonstration of Correlated Flux Scaling in Photoconductivity and Photoluminescence of Lead-Halide Perovskites},
  author={Hee Taek Yi and Pavel Irkhin and Prakriti P Joshi and Yuri N. Gartstein and Xiaoyang Zhu and Vitaly Podzorov},
  journal={Physical Review Applied},
Lead-halide perovskites attracted attention as materials for high-efficiency solar cells and light emitting applications. Among their attributes are solution processability, high absorbance in the visible spectral range and defect tolerance, as manifested in long photocarrier lifetimes and diffusion lengths. The microscopic origin of photophysical properties of perovskites is, however, still unclear and under debate. Here, we have observed an interesting universal scaling behavior in a series… Expand
4 Citations
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Direct or Indirect Bandgap in Hybrid Lead Halide Perovskites
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It is proposed that the localized strain induced by a single photoexcited charge interacting with the soft, ionic lattice is sufficient to promote halide phase separation and nucleate a light-stabilized, low-bandgap, ∼8 nm iodide-rich cluster. Expand
Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
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Photoluminescence and transmission spectroscopy is used to show that photoexcitations give rise to a conducting plasma of unbound but Coulomb-correlated electron-hole pairs at all excitations of interest for light-energy conversion and stimulated optical amplification in organic-inorganic perovskites. Expand
Photocarrier recombination dynamics in perovskite CH3NH3PbI3 for solar cell applications.
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