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Extended carrier lifetimes and diffusion in hybrid perovskites revealed by Hall effect and photoconductivity measurements

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  • Y. Chen

    (Rutgers University
    Present address: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong, China)

  • H. T. Yi

    (Rutgers University)

  • X. Wu

    (Columbia University)

  • R. Haroldson

    (University of Texas at Dallas)

  • Y. N. Gartstein

    (University of Texas at Dallas)

  • Y. I. Rodionov

    (The Institute for Theoretical and Applied Electrodynamics, The National University of Science and Technology, MISIS)

  • K. S. Tikhonov

    (Landau Institute for Theoretical Physics)

  • A. Zakhidov

    (University of Texas at Dallas
    The Institute for Theoretical and Applied Electrodynamics, The National University of Science and Technology, MISIS)

  • X. -Y. Zhu

    (Columbia University)

  • V. Podzorov

    (Rutgers University
    Institute for Adv. Mater. and Devices for Nanotech., Rutgers University)

Abstract

Impressive performance of hybrid perovskite solar cells reported in recent years still awaits a comprehensive understanding of its microscopic origins. In this work, the intrinsic Hall mobility and photocarrier recombination coefficient are directly measured in these materials in steady-state transport studies. The results show that electron-hole recombination and carrier trapping rates in hybrid perovskites are very low. The bimolecular recombination coefficient (10−11 to 10−10 cm3 s−1) is found to be on par with that in the best direct-band inorganic semiconductors, even though the intrinsic Hall mobility in hybrid perovskites is considerably lower (up to 60 cm2 V−1 s−1). Measured here, steady-state carrier lifetimes (of up to 3 ms) and diffusion lengths (as long as 650 μm) are significantly longer than those in high-purity crystalline inorganic semiconductors. We suggest that these experimental findings are consistent with the polaronic nature of charge carriers, resulting from an interaction of charges with methylammonium dipoles.

Suggested Citation

  • Y. Chen & H. T. Yi & X. Wu & R. Haroldson & Y. N. Gartstein & Y. I. Rodionov & K. S. Tikhonov & A. Zakhidov & X. -Y. Zhu & V. Podzorov, 2016. "Extended carrier lifetimes and diffusion in hybrid perovskites revealed by Hall effect and photoconductivity measurements," Nature Communications, Nature, vol. 7(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12253
    DOI: 10.1038/ncomms12253
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    Cited by:

    1. Artem Musiienko & Fengjiu Yang & Thomas William Gries & Chiara Frasca & Dennis Friedrich & Amran Al-Ashouri & Elifnaz Sağlamkaya & Felix Lang & Danny Kojda & Yi-Teng Huang & Valerio Stacchini & Robert, 2024. "Resolving electron and hole transport properties in semiconductor materials by constant light-induced magneto transport," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Jens Neu & Catharine C. Shipps & Matthew J. Guberman-Pfeffer & Cong Shen & Vishok Srikanth & Jacob A. Spies & Nathan D. Kirchhofer & Sibel Ebru Yalcin & Gary W. Brudvig & Victor S. Batista & Nikhil S., 2022. "Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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