Air‐Stable, Lead‐Free Zero‐Dimensional Mixed Bismuth‐Antimony Perovskite Single Crystals with Ultra‐broadband Emission

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  • Ruiling Zhang
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China
  • Xin Mao
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China
  • Yang Yang
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China
  • Songqiu Yang
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China
  • Wenyuan Zhao
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China
  • Tuerdi Wumaier
    Department of physics Xinjiang Institute of Engineering Urumqi Xinjiang 830091 China
  • Donghui Wei
    College of Chemistry and Molecular Engineering, Zhengzhou University 100 Science Avenue Zhengzhou P. R. China
  • Weiqiao Deng
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China
  • Keli Han
    State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 P. R. China

書誌事項

公開日
2019-02-07
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/anie.201812865
公開者
Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>Lead‐free zero‐dimensional (0D) organic‐inorganic metal halide perovskites have recently attracted increasing attention for their excellent photoluminescence properties and chemical stability. Here, we report the synthesis and characterization of an air‐stable 0D mixed metal halide perovskite (C<jats:sub>8</jats:sub>NH<jats:sub>12</jats:sub>)<jats:sub>4</jats:sub>Bi<jats:sub>0.57</jats:sub>Sb<jats:sub>0.43</jats:sub>Br<jats:sub>7</jats:sub>⋅H<jats:sub>2</jats:sub>O, in which individual [BiBr<jats:sub>6</jats:sub>]<jats:sup>3−</jats:sup> and [SbBr<jats:sub>6</jats:sub>]<jats:sup>3−</jats:sup> octahedral units are completely isolated and surrounded by the large organic cation C<jats:sub>8</jats:sub>H<jats:sub>12</jats:sub>N<jats:sup>+</jats:sup>. Upon photoexcitation, the bulk crystals exhibit ultra‐broadband emission ranging from 400 to 850 nm, which originates from both free excitons and self‐trapped excitons. This is the first example of 0D perovskites with broadband emission spanning the entire visible spectrum. In addition, (C<jats:sub>8</jats:sub>NH<jats:sub>12</jats:sub>)<jats:sub>4</jats:sub>Bi<jats:sub>0.57</jats:sub>Sb<jats:sub>0.43</jats:sub>Br<jats:sub>7</jats:sub>⋅H<jats:sub>2</jats:sub>O exhibits excellent humidity and light stability. These findings present a new direction towards the design of environmentally‐friendly, high‐performance 0D perovskite light emitters.</jats:p>

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