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. 2025 Dec 23:e08855.
doi: 10.1002/smll.202508855. Online ahead of print.

Achieving Spectrally Tunable and Strong Circularly Polarized Luminescence in Zero-Dimensional Hybrid Indium-Antimony Halides via Dual-Site-Doping Strategy

Yang Chen  1   2 , Songbing Zhong  2 , Dongming Song  2 , Huihui Wang  2 , Qie Liu  2 , Qichen Lu  1   2 , Keyu Chen  2 , Jiajie Bi  2 , Shijing Yan  3 , Yihuang Chen  2 , Shuang Pan  2   4 , Haiming Jin  1
Affiliations

Achieving Spectrally Tunable and Strong Circularly Polarized Luminescence in Zero-Dimensional Hybrid Indium-Antimony Halides via Dual-Site-Doping Strategy

Yang Chen et al. Small. .

Abstract

Chiral zero-dimensional hybrid metal halides (0D HMHs) are notable in circularly polarized luminescence (CPL)-active materials for their chiroptical properties, yet efficient and adjustable CPL in chiral 0D HMHs remain rarely reported. This study presents a novel dual-doping strategy at A and B sites for tunable CPL in chiral 0D HMHs. For indium-based HMHs using the purely chiral cation S-2-methylpiperazine, B-site Sb3+ doping yields significant CPL and intense yellow fluorescence, with near-unity photoluminescence quantum yield (PLQY) and high luminescence dissymmetry factor (glum) of 6.7 ×1 0-2. Notably, the introduction of 2,6-dimethylpiperazine at the A-site, alongside Sb3+ B-site doping, enables synergistic emission that spans blue and yellow light, thereby achieving white light emission in chiral 0D HMHs for the first time. This system achieves a PLQY of 46.08% and a glum of 2.1 × 10-2, underscoring its remarkable CPL performance and spectral tunability. Near-ultraviolet pumped white light shows 25.5% polarization. This study offers a new strategy for crafting chiral 0D HMHs with tunable spectra, high PLQY, and elevated glum.

Keywords: chiral; circularly polarized luminescence; dual‐site doping; spectral tunability; zero‐dimensional.

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