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Polarization-Dependent Multiphoton-Excited Self-Trapped Emission in Alloyed 0D Rb<sub>7</sub>Bi<sub>3</sub>Cl<sub>16</sub> Metal Halides via Sb<sup>3+</sup> Doping.

ABSTRACT: Regulating the electronic structure by doping can promote photoluminescence emission of low-dimensional metal halides for developing white-light-emitting devices. Here, 0D metal halides Rb7Bi3Cl16 have achieved a transition from nonluminescence to effective self-trapped excitons (STEs) emission after Sb3+ ion doping at room temperature. The femtosecond transient absorption spectrum reveals the nonradiative recombination was suppressed, whose lifetimes change from 93.9 ps to 3.6 ns after doping Sb3+ ion. Moreover, the Rb7Bi3Cl16:Sb3+ exhibits polarization-dependent two-photon photoluminescence and three-photon photoluminescence in the excitation wavelength range of 900-1200 nm, which further confirmed that STEs emission is extrinsic STEs by lattice deformation rather than defects. This work suggests that Sb3+ ion doping can effectively improve the luminescence properties of low-dimensional metal halides and promote the application potential in high-order nonlinear photoelectric field.

SUBMITTER: Xiao S 

PROVIDER: S-EPMC12412464 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature

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Polarization-Dependent Multiphoton-Excited Self-Trapped Emission in Alloyed 0D Rb&lt;sub&gt;7&lt;/sub&gt;Bi&lt;sub&gt;3&lt;/sub&gt;Cl&lt;sub&gt;16&lt;/sub&gt; Metal Halides via Sb&lt;sup&gt;3+&lt;/sup&gt; Doping.

Xiao Si S   Zhu Haixia H   Liu Yao Y   Chen Zhaozhe Z   Xu Defeng D   Zhou Weichang W   Chen Zhihui Z   Liang Shan S   Tong Hui H   Guo Xueyi X   He Jun J  

Small science 20250621 9

Regulating the electronic structure by doping can promote photoluminescence emission of low-dimensional metal halides for developing white-light-emitting devices. Here, 0D metal halides Rb<sub>7</sub>Bi<sub>3</sub>Cl<sub>16</sub> have achieved a transition from nonluminescence to effective self-trapped excitons (STEs) emission after Sb<sup>3+</sup> ion doping at room temperature. The femtosecond transient absorption spectrum reveals the nonradiative recombination was suppressed, whose lifetimes  ...[more]

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