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  1. Article ; Online: Laser-induced crystal growth observed in CsPbBr

    Wu, Ruirui / Gong, Shunfa / Wu, Lifang / Yu, Hailong / Han, Qiuju / Wu, Wenzhi

    Physical chemistry chemical physics : PCCP

    2022  Volume 24, Issue 14, Page(s) 8303–8310

    Abstract: Benefiting from the easily adjustable optical properties of perovskite, ... ...

    Abstract Benefiting from the easily adjustable optical properties of perovskite, CsPbBr
    Language English
    Publishing date 2022-04-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp05874f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Bi and Yb Codoped Cs₂Ag₀.₆Na₀.₄InCl₆ Microcrystals: Visible to Near-Infrared Fluorescence for Thermometry

    Yang, Sen / Gong, Shunfa / Zhou, Zhilong / Wu, Lifang / Zhang, Minmin / Jiang, Lilin / Wu, Wenzhi

    Journal of physical chemistry. 2021 May 06, v. 125, no. 19

    2021  

    Abstract: The optical and thermometric properties of bismuth (Bi) and ytterbium (Yb) codoped double perovskite Cs₂Ag₀.₆Na₀.₄InCl₆ microcrystals (MCs) are investigated, which possess high photoluminescence quantum yield and stable broadband spectra from visible to ... ...

    Abstract The optical and thermometric properties of bismuth (Bi) and ytterbium (Yb) codoped double perovskite Cs₂Ag₀.₆Na₀.₄InCl₆ microcrystals (MCs) are investigated, which possess high photoluminescence quantum yield and stable broadband spectra from visible to near-infrared (NIR) region. Thermal quenching and dynamic properties are shown using temperature-dependent steady-state photoluminescence (PL) and time-resolved PL (TRPL) techniques, which reveal the transition mechanism from self-trapped excitons (STEs) to Yb dopants. Taking advantage of the diverse thermal quenching of distinct PL between STEs and Yb³⁺ emissions, an optical thermometer based on the fluorescence intensity ratio is designed in the visible and NIR region, which can provide a self-referenced temperature with high sensitivity. The maximum absolute and relative sensor sensitivities are 0.113 K–¹ and 1.66% K–¹, respectively. These characteristics all demonstrate that Bi/Yb codoped Cs₂Ag₀.₆Na₀.₄InCl₆ MCs can be excellent and novel luminescent materials for non-contact temperature measurement.
    Keywords bismuth ; fluorescence ; photoluminescence ; physical chemistry ; temperature ; thermometers ; ytterbium
    Language English
    Dates of publication 2021-0506
    Size p. 10431-10440.
    Publishing place American Chemical Society
    Document type Article
    Note NAL-AP-2-clean
    ISSN 1932-7455
    DOI 10.1021/acs.jpcc.1c00856
    Database NAL-Catalogue (AGRICOLA)

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