A flexible perovskite homojunction with metallic ion doping for large-scale and high sensitivity X-ray detection

Zhao, Jingda; Wang, Xin; Ding, Ying; Wei, Ziyu; Xu, Yubing; Pan, Yuzhu; Li, Yuwei; Bae, Byung Seong; Furuta, Mamoru; Zhu, Zhuoya; Li, Qing; Zhou, Jianming; Zhang, Xiaobing; Lei, Wei

doi:10.1039/d3ta00138e

Cited by 4 publications

(2 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 19,21,22,45,46 ] Relatively fast rise (reaching 90%) and fall (reaching 10%) times of both 40 ± 5 ms are also accomplished confirming the excellent detection properties. However, the sensitivity or LoD is smaller than those well designed flexible X‐ray detectors, [ 47–49 ] which is most likely due to the charge transfer resistance between the restacked 2D heterostructures. Noteworthy, this work concerns the heterostructure design and fabrication strategy employed here, which allows to be extended to other types of heterostructures and have great potential in large‐area, flexible, and sensitive X‐ray detection applications.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Engineering Enables Perovskite Heteroepitaxial Growth on Black Phosphorus for Flexible X‐ray Detectors

Huang

Zheng

Liu

et al. 2023

Small

View full text Add to dashboard Cite

Abstract2D materials with atomic‐scale thickness and mechanical robustness are required for flexible devices. The superior optoelectronic properties and high‐Z atoms in metal halide perovskites render them desirable for X‐ray detection, but the intrinsic brittleness is an obstacle hampering the applications in flexible detectors. Herein, an interfacial engineering strategy is demonstrated for the epitaxial growth of methylammonium lead bromide (MAPbBr3) on black phosphorus (BP) for flexible X‐ray detectors. The mechanically robust, high‐quality heterostructure consisting of a Pb transition layer is synthesized for the two‐way bridging of BP and MAPbBr3. Excellent optoelectronic properties such as a high X‐ray sensitivity of 1,609 ± 122 µC Gy−1 cm−2 (80 times higher than that of the commercial amorphous Se), a fast response time of 40 ± 5 ms, as well as a low detection limit of 3 µGys−1 (about a fifteenth of the medical chest X‐ray dose rate) are achieved from the simple and planar direct X‐ray detector fabricated on an organic filter membrane. More importantly, these flat and simple devices are bendable and mechanically durable by exhibiting only 10% photocurrent degradation after 200 bending cycles. The novel heterostructure has great potential in large‐area, flexible, and sensitive X‐ray detection applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Interfacial Engineering Enables Perovskite Heteroepitaxial Growth on Black Phosphorus for Flexible X‐ray Detectors

Huang

Zheng

Liu

et al. 2023

Small

View full text Add to dashboard Cite

show abstract

“…In 2023, another eminent researcher J. Zhao and colleagues synthesized an X-ray-detecting device, which was also employed to image an object. 150 They achieved a successful device by fabricating an MAPbI 3 active film utilizing the spray-coating method. They adopted a strategy to make a more efficient layer by incorporating Bi 3+ .…”

Section: Perovskite Materials Development and Devices For X-ray Detec...mentioning

confidence: 99%

Perovskite materials in X-ray detection and imaging: recent progress, challenges, and future prospects

Miah,

Khandaker,

Aminul Islam

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

Wearable Photoferroelectric Perovskite X‐Ray Detectors

Li,

Wang,

Luo

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

High‐sensitivity wearable radiation detectors are essential for personnel protection in radiation environments such as defense, nuclear facilities, and medical fields. Traditional detectors using bulk crystals lack flexibility, and emerging perovskite films suffer from lead toxicity and poor charge transport. Herein, lead‐free photoferroelectric hybrid metal halide perovskite flexible membranes for wearable detectors are presented, offering superior X‐ray response with sensitivities up to 7872 ± 517 µC Gyair−1 cm−2 at 50 V bias and 394 ± 67 µC Gyair−1 cm−2 in a self‐driven mode, detection limit of lower than 77 nGyair s−1, and excellent imaging capabilities. This exceptional performance is attributed to the spontaneous polarization that promotes efficient charge transport. Additionally, they show remarkable radiation stability, long‐term air stability, mechanical fatigue resistance, and water stability. They also exhibit efficient energy response under the Compton effect and meet the angle response requirements of the International Electrotechnical Commission standard for direct‐reading personal dose equivalent meters, paving the way for their integration into flexible, wearable dosimeters. These advancements have the potential to drive the realization of the next generation of flexible wearable radiation detectors.

show abstract

A flexible perovskite homojunction with metallic ion doping for large-scale and high sensitivity X-ray detection

Abstract: A large-scale flexible X-ray detector based on a perovskite p–n homojunction is reported in this work. The addition of a Bi3+-doped MAPbI3 layer would effectively suppress the dark current and noise while maintaining high sensitivity.

Cited by 4 publications

References 41 publications

Interfacial Engineering Enables Perovskite Heteroepitaxial Growth on Black Phosphorus for Flexible X‐ray Detectors

Interfacial Engineering Enables Perovskite Heteroepitaxial Growth on Black Phosphorus for Flexible X‐ray Detectors

Perovskite materials in X-ray detection and imaging: recent progress, challenges, and future prospects

Wearable Photoferroelectric Perovskite X‐Ray Detectors

Contact Info

Product

Resources

About