Ultra-flexible and highly sensitive scintillation screen based on perovskite quantum dots for non-flat objects X-ray imaging

Xu, Qiang; Zhou, Shuai; Huang, Jie; Ouyang, Xiaolong; Li, Jun; Guo, Yong; Wang, Juan; Nie, Jing; Zhang, Xinlei; Ouyang, Xiaoping; Jia, Wenbao

doi:10.1016/j.mtphys.2021.100390

Cited by 31 publications

(35 citation statements)

References 39 publications

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“…Characterization. Most of the instrument information has been published in our previous paper,32 which also can be found in the Supporting Information.sı Supporting Information The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsami.1c15613. Additional experimental details including characterization, figures showing water stability of nanocomposites, statistics of the CsPbBr 3 NC average size, EDS of nanocomposites, and X-ray images for different nanocomposite thicknesses (PDF) Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi'an 710123, China; Northwest Institute of Nuclear Technology, Xi'an 710024, China; Email: oyxp2003@aliyun.com Qiang Xu − Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; orcid.org/0000-0002-4720-7477; Email: xuqiangxmu@nuaa.edu.cn…”

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confidence: 99%

High Photoluminescence Quantum Yield Perovskite/Polymer Nanocomposites for High Contrast X-ray Imaging

Nie

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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A surface modified-CsPbBr 3 /polybutylmethacrylate (PBMA) nanocomposite is reported to be a scintillator that enables us to provide a high contrast X-ray image using a common charge-coupled device (CCD) camera. Bis(2-(methacryloyloxy)ethyl) phosphate (BMEP) was employed to alter the ratio of the original ligands on the CsPbBr 3 nanocrystal (NC) surface for optimizing the optical performance of the CsPbBr 3 /PBMA nanocomposites. The nanocomposites with a concentration of 0.02 wt % NCs exhibit more than 70% transmittance in the visible region and show a green emission at 515 nm, the fast decay time is 13 ns, while the photoluminescence quantum yield value is 99.2%. Under X-ray excitation, the emission peak wavelength is centered at 524 nm and shows a narrow full width at half-maximum of 26.6 nm; the result nicely matches with the peak quantum efficiency of most commercial CCD/complementary metal oxide semiconductor cameras. The high contrast X-ray image is recorded at a low dose rate of 4.6 μGy air /s, which enables read out with software. Our results demonstrate that these CsPbBr 3 /PBMA nanocomposites have promising application prospects for ionizing radiation detection, especially for Xray imaging.

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confidence: 99%

High Photoluminescence Quantum Yield Perovskite/Polymer Nanocomposites for High Contrast X-ray Imaging

Nie

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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“…Actually, such a mechanical stability is much better than those of scintillators by directly depositing materials on flexible substrates. [ 47 ] Especially, it can be even folded into shapes of a cylinder and an airplane, as shown in the bottom of Figure 3c. Besides, we have investigated the long‐term stability of the pure CsPbBr 3 NCs and CsPbBr 3 @PMMA films under the same condition.…”

Section: Resultsmentioning

confidence: 99%

Template Assembled Large‐Size CsPbBr₃ Nanocomposite Films toward Flexible, Stable, and High‐Performance X‐Ray Scintillators

Wang

Peng

Yang

et al. 2022

Laser & Photonics Reviews

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Metal halide perovskite‐based high‐performance X‐ray scintillator is considered as one of the most favorable candidates applied in the fields of medicine, industry, and science. However, the current X‐ray scilltillators based on perovskites still suffer from the issue of poor stability, which impedes their further wide applications. Herein, a template assembled method to prepare large‐size, flexible, and stable CsPbBr3@Polymethyl methacrylate composite films in ambient conditions is developed and their detection performance is studied. The composite films can maintain 94% and 81% of the initial PL intensity after 2000 cycles bending and storing in water over 2520 h, respectively. In addition, the prepared scintillators exhibit not only a low detection limit of 40.1 nGyair s−1 and a high spatial resolution of 8.0 lp mm−1, but also an excellent tolerance against radiation (108 h). Thus, this simple but yet effective method would not doubt pave the way for further development of scintillators and might be well applicable to other metal halides.

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“…In addition to F-PSCs, photodetectors and photomemristors, other perovskite devices have been demonstrated. [105][106][107][108][109] Perovskites are the promising emitters with high color purity and excellent photoluminescence quantum yield. In 2014, Tan et al fabricated perovskite LEDs at room temperature.…”

Section: Light-emitting Diodesmentioning

confidence: 99%

Flexible and Wearable Optoelectronic Devices Based on Perovskites

Zhao

et al. 2021

Adv Materials Technologies

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PCE) values than the single-junction solar cells. [11,12] In addition, perovskites have shown emerging applications in lightemitting diodes (LEDs), photodetectors and other fields. These devices are fabricated on the rigid substrate initially, which limit their applications in the emerging intelligent devices, such as flexible display and intelligent sensor. [13,14] Flexible devices with stretchability and crumpling durability are capable of realizing portable and wearable application. Kumar et al. reported the first flexible-perovskite solar cells (F-PSCs) with PCE of 2.6%. [15] With the optimization of devices and deep understanding of perovskite materials, the highest PCE of F-PSCs is more than 20%. [16] The artemisinin passivation strategy was used to reduce the trap density through the interaction between artemisinin and the uncoordinated Pb 2+ . The PCE of flexible devices is often limited by their low-temperature manufacturing process. Generally, perovskite optoelectronic devices can be prepared by solution method. [9,10] So far, the flexible devices have been reported by various methods, such as vapor deposition, [17] inkjet printing, [18][19][20] slot-die coating. [21][22][23] These fabrication methods with low-cost and simplicity are suitable for large-scale fabrication of flexible devices. The flexibility of optoelectronic devices is influenced by many aspects, such as the substrates, carrier transport layers, photoactive layers, and electrodes in the structure of F-PSCs. Different from the rigid devices, flexible devices are commonly fabricated on substrate with flexibility, such as polyethylene terephthalate (PET), polyethylene 2,6-naphthalate (PEN), polyimide (PI), [24][25][26] metal foil. [27,28] For substrate of F-PSCs, metal foil has excellent conductivity, flexibility, and thermal stability, but its low light transmittance could limit its application in optoelectronic devices. [29] Indium tin oxide (ITO) is commonly used as electrode material because of its excellent light transmittance and low electrical resistance, [30] while the brittleness limits its application. [31] The metal mesh electrode is a substitute for the flexible electrode with high conductivity and excellent transmittance. [32] The electron transport layer (ETL) is also important component of F-PSCs. TiO 2 is a widely used ETL in perovskite devices because of its suitable energy band position. [33] However, the low heat resistance of PEN and PET polymer substrates limits the processing temperature of TiO 2 in the preparation process. [34] Hence, many low temperature preparation methods about TiO 2 and new ETL materials have been developed. [34,35] Ethoxylated-polyethylenimine is often used for ETL in flexible devices because it is flexible and can improve electronic transport performance. [36] Another Perovskites as promising photovoltaic materials have been widely investigated due to their excellent photoelectric properties. Perovskite optoelectronic devices have been applied in fields of portable energy, light monitors, image ...

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Ultra-flexible and highly sensitive scintillation screen based on perovskite quantum dots for non-flat objects X-ray imaging

Cited by 31 publications

References 39 publications

High Photoluminescence Quantum Yield Perovskite/Polymer Nanocomposites for High Contrast X-ray Imaging

High Photoluminescence Quantum Yield Perovskite/Polymer Nanocomposites for High Contrast X-ray Imaging

Template Assembled Large‐Size CsPbBr₃ Nanocomposite Films toward Flexible, Stable, and High‐Performance X‐Ray Scintillators

Flexible and Wearable Optoelectronic Devices Based on Perovskites

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Ultra-flexible and highly sensitive scintillation screen based on perovskite quantum dots for non-flat objects X-ray imaging

Cited by 31 publications

References 39 publications

High Photoluminescence Quantum Yield Perovskite/Polymer Nanocomposites for High Contrast X-ray Imaging

High Photoluminescence Quantum Yield Perovskite/Polymer Nanocomposites for High Contrast X-ray Imaging

Template Assembled Large‐Size CsPbBr3 Nanocomposite Films toward Flexible, Stable, and High‐Performance X‐Ray Scintillators

Flexible and Wearable Optoelectronic Devices Based on Perovskites

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Template Assembled Large‐Size CsPbBr₃ Nanocomposite Films toward Flexible, Stable, and High‐Performance X‐Ray Scintillators