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Long-lived hot-carrier light emission and large blue shift in formamidinium tin triiodide perovskites

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  • Hong-Hua Fang

    (University of Groningen)

  • Sampson Adjokatse

    (University of Groningen)

  • Shuyan Shao

    (University of Groningen)

  • Jacky Even

    (Université de Rennes 1)

  • Maria Antonietta Loi

    (University of Groningen)

Abstract

A long-lived hot carrier population is critical in order to develop working hot carrier photovoltaic devices with efficiencies exceeding the Shockley–Queisser limit. Here, we report photoluminescence from hot-carriers with unexpectedly long lifetime (a few ns) in formamidinium tin triiodide. An unusual large blue shift of the time-integrated photoluminescence with increasing excitation power (150 meV at 24 K and 75 meV at 293 K) is displayed. On the basis of the analysis of energy-resolved and time-resolved photoluminescence, we posit that these phenomena are associated with slow hot carrier relaxation and state-filling of band edge states. These observations are both important for our understanding of lead-free hybrid perovskites and for an eventual future development of efficient lead-free perovskite photovoltaics.

Suggested Citation

  • Hong-Hua Fang & Sampson Adjokatse & Shuyan Shao & Jacky Even & Maria Antonietta Loi, 2018. "Long-lived hot-carrier light emission and large blue shift in formamidinium tin triiodide perovskites," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-017-02684-w
    DOI: 10.1038/s41467-017-02684-w
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    Cited by:

    1. Daniele Catone & Giuseppe Ammirati & Patrick O’Keeffe & Faustino Martelli & Lorenzo Di Mario & Stefano Turchini & Alessandra Paladini & Francesco Toschi & Antonio Agresti & Sara Pescetelli & Aldo Di C, 2021. "Effects of Crystal Morphology on the Hot-Carrier Dynamics in Mixed-Cation Hybrid Lead Halide Perovskites," Energies, MDPI, vol. 14(3), pages 1-14, January.

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