Copper Organometallic Iodide Arrays for Efficient X-ray Imaging Scintillators

Hong Wang; Jian Xin Wang; Xin Song; Tengyue He; Yang Zhou; Osama Shekhah; Luis Gutiérrez-Arzaluz; Mehmet Bayindir; Mohamed Eddaoudi; Osman M. Bakr; Omar F. Mohammed

doi:10.1021/acscentsci.2c01495

Copper Organometallic Iodide Arrays for Efficient X-ray Imaging Scintillators

Hong Wang, Jian Xin Wang, Xin Song, Tengyue He, Yang Zhou, Osama Shekhah, Luis Gutiérrez-Arzaluz, Mehmet Bayindir, Mohamed Eddaoudi, Osman M. Bakr, Omar F. Mohammed^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Lead-free organic metal halide scintillators with low-dimensional electronic structures have demonstrated great potential in X-ray detection and imaging due to their excellent optoelectronic properties. Herein, the zero-dimensional organic copper halide (18-crown-6)₂Na₂(H₂O)₃Cu₄I₆ (CNCI) which exhibits negligible self-absorption and near-unity green-light emission was successfully deployed into X-ray imaging scintillators with outstanding X-ray sensitivity and imaging resolution. In particular, we fabricated a CNCI/polymer composite scintillator with an ultrahigh light yield of ∼109,000 photons/MeV, representing one of the highest values reported so far for scintillation materials. In addition, an ultralow detection limit of 59.4 nGy/s was achieved, which is approximately 92 times lower than the dosage for a standard medical examination. Moreover, the spatial imaging resolution of the CNCI scintillator was further improved by using a silicon template due to the wave-guiding of light through CNCI-filled pores. The pixelated CNCI-silicon array scintillation screen displays an impressive spatial resolution of 24.8 line pairs per millimeter (lp/mm) compared to the resolution of 16.3 lp/mm for CNCI-polymer film screens, representing the highest resolutions reported so far for organometallic-based X-ray imaging screens. This design represents a new approach to fabricating high-performance X-ray imaging scintillators based on organic metal halides for applications in medical radiography and security screening.

Original language	English (US)
Pages (from-to)	668-674
Number of pages	7
Journal	ACS Central Science
Volume	9
Issue number	4
DOIs	https://doi.org/10.1021/acscentsci.2c01495
State	Published - Apr 26 2023

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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10.1021/acscentsci.2c01495

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@article{dc035cada57a45ce86cdf06a03338334,

title = "Copper Organometallic Iodide Arrays for Efficient X-ray Imaging Scintillators",

abstract = "Lead-free organic metal halide scintillators with low-dimensional electronic structures have demonstrated great potential in X-ray detection and imaging due to their excellent optoelectronic properties. Herein, the zero-dimensional organic copper halide (18-crown-6)2Na2(H2O)3Cu4I6 (CNCI) which exhibits negligible self-absorption and near-unity green-light emission was successfully deployed into X-ray imaging scintillators with outstanding X-ray sensitivity and imaging resolution. In particular, we fabricated a CNCI/polymer composite scintillator with an ultrahigh light yield of ∼109,000 photons/MeV, representing one of the highest values reported so far for scintillation materials. In addition, an ultralow detection limit of 59.4 nGy/s was achieved, which is approximately 92 times lower than the dosage for a standard medical examination. Moreover, the spatial imaging resolution of the CNCI scintillator was further improved by using a silicon template due to the wave-guiding of light through CNCI-filled pores. The pixelated CNCI-silicon array scintillation screen displays an impressive spatial resolution of 24.8 line pairs per millimeter (lp/mm) compared to the resolution of 16.3 lp/mm for CNCI-polymer film screens, representing the highest resolutions reported so far for organometallic-based X-ray imaging screens. This design represents a new approach to fabricating high-performance X-ray imaging scintillators based on organic metal halides for applications in medical radiography and security screening.",

author = "Hong Wang and Wang, {Jian Xin} and Xin Song and Tengyue He and Yang Zhou and Osama Shekhah and Luis Guti{\'e}rrez-Arzaluz and Mehmet Bayindir and Mohamed Eddaoudi and Bakr, {Osman M.} and Mohammed, {Omar F.}",

note = "Funding Information: This work was supported by the King Abdullah University of Science and Technology (KAUST). Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society",

year = "2023",

month = apr,

day = "26",

doi = "10.1021/acscentsci.2c01495",

language = "English (US)",

volume = "9",

pages = "668--674",

journal = "ACS Central Science",

issn = "2374-7943",

publisher = "American Chemical Society",

number = "4",

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TY - JOUR

T1 - Copper Organometallic Iodide Arrays for Efficient X-ray Imaging Scintillators

AU - Wang, Hong

AU - Wang, Jian Xin

AU - Song, Xin

AU - He, Tengyue

AU - Zhou, Yang

AU - Shekhah, Osama

AU - Gutiérrez-Arzaluz, Luis

AU - Bayindir, Mehmet

AU - Eddaoudi, Mohamed

AU - Bakr, Osman M.

AU - Mohammed, Omar F.

PY - 2023/4/26

Y1 - 2023/4/26

N2 - Lead-free organic metal halide scintillators with low-dimensional electronic structures have demonstrated great potential in X-ray detection and imaging due to their excellent optoelectronic properties. Herein, the zero-dimensional organic copper halide (18-crown-6)2Na2(H2O)3Cu4I6 (CNCI) which exhibits negligible self-absorption and near-unity green-light emission was successfully deployed into X-ray imaging scintillators with outstanding X-ray sensitivity and imaging resolution. In particular, we fabricated a CNCI/polymer composite scintillator with an ultrahigh light yield of ∼109,000 photons/MeV, representing one of the highest values reported so far for scintillation materials. In addition, an ultralow detection limit of 59.4 nGy/s was achieved, which is approximately 92 times lower than the dosage for a standard medical examination. Moreover, the spatial imaging resolution of the CNCI scintillator was further improved by using a silicon template due to the wave-guiding of light through CNCI-filled pores. The pixelated CNCI-silicon array scintillation screen displays an impressive spatial resolution of 24.8 line pairs per millimeter (lp/mm) compared to the resolution of 16.3 lp/mm for CNCI-polymer film screens, representing the highest resolutions reported so far for organometallic-based X-ray imaging screens. This design represents a new approach to fabricating high-performance X-ray imaging scintillators based on organic metal halides for applications in medical radiography and security screening.

AB - Lead-free organic metal halide scintillators with low-dimensional electronic structures have demonstrated great potential in X-ray detection and imaging due to their excellent optoelectronic properties. Herein, the zero-dimensional organic copper halide (18-crown-6)2Na2(H2O)3Cu4I6 (CNCI) which exhibits negligible self-absorption and near-unity green-light emission was successfully deployed into X-ray imaging scintillators with outstanding X-ray sensitivity and imaging resolution. In particular, we fabricated a CNCI/polymer composite scintillator with an ultrahigh light yield of ∼109,000 photons/MeV, representing one of the highest values reported so far for scintillation materials. In addition, an ultralow detection limit of 59.4 nGy/s was achieved, which is approximately 92 times lower than the dosage for a standard medical examination. Moreover, the spatial imaging resolution of the CNCI scintillator was further improved by using a silicon template due to the wave-guiding of light through CNCI-filled pores. The pixelated CNCI-silicon array scintillation screen displays an impressive spatial resolution of 24.8 line pairs per millimeter (lp/mm) compared to the resolution of 16.3 lp/mm for CNCI-polymer film screens, representing the highest resolutions reported so far for organometallic-based X-ray imaging screens. This design represents a new approach to fabricating high-performance X-ray imaging scintillators based on organic metal halides for applications in medical radiography and security screening.

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DO - 10.1021/acscentsci.2c01495

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SN - 2374-7943

VL - 9

SP - 668

EP - 674

JO - ACS Central Science

JF - ACS Central Science

IS - 4

ER -

Copper Organometallic Iodide Arrays for Efficient X-ray Imaging Scintillators

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