Single-Crystalline Perovskite Nanowire Arrays for Stable X-ray Scintillators with Micrometer Spatial Resolution

Zhaojun Zhang; Hanna Dierks; Nils Lamers; Chen Sun; Klára Nováková; Crispin Hetherington; Ivan G. Scheblykin; Jesper Wallentin

doi:10.1021/acsanm.1c03575

Single-Crystalline Perovskite Nanowire Arrays for Stable X-ray Scintillators with Micrometer Spatial Resolution

Zhaojun Zhang, Hanna Dierks, Nils Lamers, Chen Sun, Klára Nováková, Crispin Hetherington, Ivan G. Scheblykin, Jesper Wallentin

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

Abstract

X-ray scintillation detectors based on metal halide perovskites have shown excellent light yield, but they mostly target applications with spatial resolution at the tens of micrometers level. Here, we use a one-step solution method to grow arrays of 15-μm-long single-crystalline CsPbBr3 nanowires (NWs) in an AAO (anodized aluminum oxide) membrane template, with nanowire diameters ranging from 30 to 360 nm. The CsPbBr3 nanowires in AAO (CsPbBr3 NW/AAO) show increasing X-ray scintillation efficiency with decreasing nanowire diameter, with a maximum photon yield of ∼5 »300 ph/MeV at 30 nm diameter. The CsPbBr3 NW/AAO composites also display high radiation resistance, with a scintillation-intensity decrease of only ∼20-30% after 24 h of X-ray exposure (integrated dose 162 Gyair) and almost no change after ambient storage for 2 months. X-ray images can distinguish line pairs with a spacing of 2 μm for all nanowire diameters, while slanted edge measurements show a spatial resolution of ∼160 lp/mm at modulation transfer function (MTF) = 0.1. The combination of high spatial resolution, radiation stability, and easy fabrication makes these CsPbBr3 NW/AAO scintillators a promising candidate for high-resolution X-ray imaging applications.

Original language	English
Pages (from-to)	881-889
Number of pages	9
Journal	ACS Applied Nano Materials
Volume	5
Issue number	1
Early online date	2021 Dec 18
DOIs	https://doi.org/10.1021/acsanm.1c03575
Publication status	Published - 2022 Jan 28

Bibliographical note

Funding Information:
This project received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant agreement no. 801847). This research was also funded by the Olle Engkvist foundation, NanoLund, and Marie Sklodowska Curie Actions Cofund, Project INCA 600398. This work was partly supported by the Swedish Research Council (2020-03530) and Knut and Alice Wallenberg Foundation (2016.0059). The Research Infrastructure Fellow program from the Swedish Foundation for Strategic Research also provided support for this research.

Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society.

Subject classification (UKÄ)

Accelerator Physics and Instrumentation

Keywords

micrometer spatial resolution
nanowire array
perovskite
X-ray imaging

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10.1021/acsanm.1c03575Licence: CC BY

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title = "Single-Crystalline Perovskite Nanowire Arrays for Stable X-ray Scintillators with Micrometer Spatial Resolution",

abstract = "X-ray scintillation detectors based on metal halide perovskites have shown excellent light yield, but they mostly target applications with spatial resolution at the tens of micrometers level. Here, we use a one-step solution method to grow arrays of 15-μm-long single-crystalline CsPbBr3 nanowires (NWs) in an AAO (anodized aluminum oxide) membrane template, with nanowire diameters ranging from 30 to 360 nm. The CsPbBr3 nanowires in AAO (CsPbBr3 NW/AAO) show increasing X-ray scintillation efficiency with decreasing nanowire diameter, with a maximum photon yield of ∼5 »300 ph/MeV at 30 nm diameter. The CsPbBr3 NW/AAO composites also display high radiation resistance, with a scintillation-intensity decrease of only ∼20-30% after 24 h of X-ray exposure (integrated dose 162 Gyair) and almost no change after ambient storage for 2 months. X-ray images can distinguish line pairs with a spacing of 2 μm for all nanowire diameters, while slanted edge measurements show a spatial resolution of ∼160 lp/mm at modulation transfer function (MTF) = 0.1. The combination of high spatial resolution, radiation stability, and easy fabrication makes these CsPbBr3 NW/AAO scintillators a promising candidate for high-resolution X-ray imaging applications. ",

keywords = "micrometer spatial resolution, nanowire array, perovskite, X-ray imaging",

author = "Zhaojun Zhang and Hanna Dierks and Nils Lamers and Chen Sun and Kl{\'a}ra Nov{\'a}kov{\'a} and Crispin Hetherington and Scheblykin, {Ivan G.} and Jesper Wallentin",

note = "Funding Information: This project received funding from the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation program (Grant agreement no. 801847). This research was also funded by the Olle Engkvist foundation, NanoLund, and Marie Sklodowska Curie Actions Cofund, Project INCA 600398. This work was partly supported by the Swedish Research Council (2020-03530) and Knut and Alice Wallenberg Foundation (2016.0059). The Research Infrastructure Fellow program from the Swedish Foundation for Strategic Research also provided support for this research. Publisher Copyright: {\textcopyright} 2021 The Authors. Published by American Chemical Society.",

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doi = "10.1021/acsanm.1c03575",

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AU - Zhang, Zhaojun

AU - Dierks, Hanna

AU - Lamers, Nils

AU - Sun, Chen

AU - Nováková, Klára

AU - Hetherington, Crispin

AU - Scheblykin, Ivan G.

AU - Wallentin, Jesper

N1 - Funding Information: This project received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant agreement no. 801847). This research was also funded by the Olle Engkvist foundation, NanoLund, and Marie Sklodowska Curie Actions Cofund, Project INCA 600398. This work was partly supported by the Swedish Research Council (2020-03530) and Knut and Alice Wallenberg Foundation (2016.0059). The Research Infrastructure Fellow program from the Swedish Foundation for Strategic Research also provided support for this research. Publisher Copyright: © 2021 The Authors. Published by American Chemical Society.

PY - 2022/1/28

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N2 - X-ray scintillation detectors based on metal halide perovskites have shown excellent light yield, but they mostly target applications with spatial resolution at the tens of micrometers level. Here, we use a one-step solution method to grow arrays of 15-μm-long single-crystalline CsPbBr3 nanowires (NWs) in an AAO (anodized aluminum oxide) membrane template, with nanowire diameters ranging from 30 to 360 nm. The CsPbBr3 nanowires in AAO (CsPbBr3 NW/AAO) show increasing X-ray scintillation efficiency with decreasing nanowire diameter, with a maximum photon yield of ∼5 »300 ph/MeV at 30 nm diameter. The CsPbBr3 NW/AAO composites also display high radiation resistance, with a scintillation-intensity decrease of only ∼20-30% after 24 h of X-ray exposure (integrated dose 162 Gyair) and almost no change after ambient storage for 2 months. X-ray images can distinguish line pairs with a spacing of 2 μm for all nanowire diameters, while slanted edge measurements show a spatial resolution of ∼160 lp/mm at modulation transfer function (MTF) = 0.1. The combination of high spatial resolution, radiation stability, and easy fabrication makes these CsPbBr3 NW/AAO scintillators a promising candidate for high-resolution X-ray imaging applications.

AB - X-ray scintillation detectors based on metal halide perovskites have shown excellent light yield, but they mostly target applications with spatial resolution at the tens of micrometers level. Here, we use a one-step solution method to grow arrays of 15-μm-long single-crystalline CsPbBr3 nanowires (NWs) in an AAO (anodized aluminum oxide) membrane template, with nanowire diameters ranging from 30 to 360 nm. The CsPbBr3 nanowires in AAO (CsPbBr3 NW/AAO) show increasing X-ray scintillation efficiency with decreasing nanowire diameter, with a maximum photon yield of ∼5 »300 ph/MeV at 30 nm diameter. The CsPbBr3 NW/AAO composites also display high radiation resistance, with a scintillation-intensity decrease of only ∼20-30% after 24 h of X-ray exposure (integrated dose 162 Gyair) and almost no change after ambient storage for 2 months. X-ray images can distinguish line pairs with a spacing of 2 μm for all nanowire diameters, while slanted edge measurements show a spatial resolution of ∼160 lp/mm at modulation transfer function (MTF) = 0.1. The combination of high spatial resolution, radiation stability, and easy fabrication makes these CsPbBr3 NW/AAO scintillators a promising candidate for high-resolution X-ray imaging applications.

KW - micrometer spatial resolution

KW - nanowire array

KW - perovskite

KW - X-ray imaging

U2 - 10.1021/acsanm.1c03575

DO - 10.1021/acsanm.1c03575

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VL - 5

SP - 881

EP - 889

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

SN - 2574-0970

IS - 1

ER -

Single-Crystalline Perovskite Nanowire Arrays for Stable X-ray Scintillators with Micrometer Spatial Resolution

Abstract

Bibliographical note

Subject classification (UKÄ)

Keywords

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