Highly Luminescent Phase-Stable Hybrid Manganese Halides for Efficient X-ray Imaging

Sujun Ji, Yihang Liu, Yulong Wang, Hongyuan Zhao, Qiujie Wang, Qichao Meng, Yunfei Bai, Junke Jiang, Qing Shen, Feng Liu (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

5 Citaten (Scopus)
42 Downloads (Pure)

Samenvatting

Mn(II)-based organic-inorganic hybrid metal halides have garnered considerable attention for their potential use in X-ray imaging due to their cost-effective solution processability and remarkable radioluminescence efficiency. However, achieving a photoluminescence quantum yield (PLQY) close to 100% across all compositions containing Cl-, Br-, and I- has been a challenge. Here, we introduce an efficient spacer cation, BDPA+ (C15H18N+), which enables all halide compounds to achieve high PLQYs of 95-98%. The high fluorescence efficiency is attributed to the passivation effect provided by π-conjugated aromatic groups and the long distance between emissive centers afforded by the periodic bulk structures of BDPA+. This effectively reduces energy transfer between Mn2+ ions, resulting in enhanced luminescence. Additionally, the strong hydrophobic nature of the organic component ensures that the resulting crystals maintain their stability for over 2 months in ambient air, making them suitable for a wide range of applications. A representative scintillator prepared from (BDPA)2MnBr4 exhibits impressive X-ray imaging performance with a high light yield of 44,000 ph/MeV and a low detection limit of 0.32 μGy/s, comparable to those of commercial LuAG:Ce scintillator crystals (25,000 ph/MeV, 2.32 μGy/s). These findings hold great promise for the future development of this class of materials, particularly for stable high-energy radiation detection.

Originele taal-2Engels
Pagina's (van-tot)2094-2103
Aantal pagina's10
TijdschriftCrystal Growth and Design
Volume24
Nummer van het tijdschrift5
Vroegere onlinedatum19 feb. 2024
DOI's
StatusGepubliceerd - 6 mrt. 2024

Financiering

This work was financially supported by the National Natural Science Foundation of China (no. 22179072), the Natural Science Foundation of Shandong Province (no. ZR2021QF006), the Outstanding Youth Science Foundation of Shandong Province (Overseas) (no. 2022HWYQ-006), and the Qilu Youth Scholar Foundation of Shandong University (no. 62460082163114).

FinanciersFinanciernummer
Shandong University62460082163114
National Natural Science Foundation of China22179072

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