Highly Bright and Stable Chiral CsPbBr<sub>3</sub> Perovskite Nanocrystal Scintillators for High-Resolution X-ray Imaging

Chiral perovskite nanocrystals (PeNCs) scintillators hold great potential for reducing optical crosstalk in X-ray imaging, due to their circularly polarized radioluminescence (CPRL) properties. However, due to the weak binding of chiral ligands and inefficient chirality transfer, achieving chiral PeNCs with high radioluminescence dissymmetry factors (<i>g</i><sub>RL</sub>) remains a challenge. Here, we introduce polydimethylsiloxane (PDMS) as a CPRL-enhancing modifier that anchors chiral ligands to PeNCs surfaces through σ-π interactions. As a result, these chiral PeNCs exhibit a high <i>g</i><sub>RL</sub> of 3.13 × 10<sup>-2</sup>, together with a near-unity photoluminescence quantum yield and a large asymmetry factor (<i>g</i><sub>lum</sub>) of 3.10 × 10<sup>-2</sup>, representing the highest chiral optical performance reported for chiral scintillators. We then, for the first time, demonstrate that these high-performance chiral PeNCs film can effectively suppress optical crosstalk to enhance X-ray imaging quality, opening a new avenue for designing advanced chiral PeNCs with significantly broadened practical applicability.

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Publication Details

Journal
Nano Letters
Published
2025-08-27
DOI
https://doi.org/10.1021/acs.nanolett.5c02712
Citations
9
Primary Topic
Perovskite Materials and Applications
Type
article
Field-Weighted Citation Impact
6.57

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article

Highly Bright and Stable Chiral CsPbBr3 Perovskite Nanocrystal Scintillators for High-Resolution X-ray Imaging

Jibin Zhang, Xinzhen Ji, Mochen Jia, Linyuan Lian et al.
9 citations
Nano Letters
Perovskite Materials and Applications
6.57
article

Highly Bright and Stable Chiral CsPbBr3 Perovskite Nanocrystal Scintillators for High-Resolution X-ray Imaging

Jibin Zhang, Xinzhen Ji, Mochen Jia, Linyuan Lian, Zhifeng Shi, Meng Su, Yanbing Han, Zhuangzhuang Ma, Ying Liu, Meng Wang, Fei Zhang, Yang Li, Kai Wang, Xinjian Li, Xu Chen, Qinglin Zeng, Bangbang Yang
article en
9 citations

Abstract

Chiral perovskite nanocrystals (PeNCs) scintillators hold great potential for reducing optical crosstalk in X-ray imaging, due to their circularly polarized radioluminescence (CPRL) properties. However, due to the weak binding of chiral ligands and inefficient chirality transfer, achieving chiral PeNCs with high radioluminescence dissymmetry factors (<i>g</i><sub>RL</sub>) remains a challenge. Here, we introduce polydimethylsiloxane (PDMS) as a CPRL-enhancing modifier that anchors chiral ligands to PeNCs surfaces through σ-π interactions. As a result, these chiral PeNCs exhibit a high <i>g</i><sub>RL</sub> of 3.13 × 10<sup>-2</sup>, together with a near-unity photoluminescence quantum yield and a large asymmetry factor (<i>g</i><sub>lum</sub>) of 3.10 × 10<sup>-2</sup>, representing the highest chiral optical performance reported for chiral scintillators. We then, for the first time, demonstrate that these high-performance chiral PeNCs film can effectively suppress optical crosstalk to enhance X-ray imaging quality, opening a new avenue for designing advanced chiral PeNCs with significantly broadened practical applicability.

Nano LettersVol. 25(36)
Ministry of Education of the People's Republic of China (CN), Beijing Jiaotong University (CN), Zhengzhou University (CN), Henan University of Engineering (CN), Ministry of Education (TH), Henan Communication Science and Technology Research Institute (China) (CN), Henan Science and Technology Department (CN), Ministry of Education (BD)
National Natural Science Foundation of China, China Postdoctoral Science Foundation, Natural Science Foundation of Hebei Province, Natural Science Foundation of Henan Province
Openalex Percentile: Top 3%
Perovskite Materials and Applications
6.57
DOISourceOpenAlex
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