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

Open access
Fang, Hong-Hua, Adjokatse, Sampson, Shao, Shuyan, Even, Jacky, Loi, Maria Antonietta·2018·Nature Communications

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.

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Metadata

Authors
Fang, H.-H., Adjokatse, S., Shao, S., Even, J., & Loi, M. A.
Venue
Nature Communications
Published
2018-01-16
Volume
9
Issue
1
Pages
243-243
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2783473290
Cited by
299
References
52
FWCI
11.10
Type
journal article
Language
en
Open access
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CoChat. (2026). Citation check: Long-lived hot-carrier light emission and large blue shift in formamidinium tin triiodide perovskites. https://app.cochat.ai/papers/10.1038/s41467-017-02684-w
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Fang, H.-H., Adjokatse, S., Shao, S., Even, J., & Loi, M. A. (2018). Long-lived hot-carrier light emission and large blue shift in formamidinium tin triiodide perovskites. Nature Communications. https://doi.org/10.1038/s41467-017-02684-w

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