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Synergistic strain ...
Synergistic strain engineering of perovskite single crystals for highly stable and sensitive X-ray detectors with low-bias imaging and monitoring
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- Jiang, Jizhong (author)
- Jilin Univ, Peoples R China
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- Xiong, Min (author)
- Nanchang Univ, Peoples R China
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- Fan, Ke (author)
- Hong Kong Polytech Univ, Peoples R China
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- Bao, Chunxiong (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Xin, Deyu (author)
- China Acad Engn Phys, Peoples R China
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- Pan, Zhengwei (author)
- Nanchang Univ, Peoples R China
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- Fei, Linfeng (author)
- Nanchang Univ, Peoples R China
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- Huang, Haitao (author)
- Hong Kong Polytech Univ, Peoples R China
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- Zhou, Lang (author)
- Nanchang Univ, Peoples R China
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- Yao, Kai (author)
- Nanchang Univ, Peoples R China
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- Zheng, Xiaojia (author)
- China Acad Engn Phys, Peoples R China
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- Shen, Liang (author)
- Jilin Univ, Peoples R China
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- Gao, Feng (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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(creator_code:org_t)
- 2022-07-18
- 2022
- English.
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In: Nature Photonics. - : Nature Portfolio. - 1749-4885 .- 1749-4893. ; 16:8, s. 575-581
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
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- X-ray detectors based on dual-site-doped perovskite single crystals exhibit excellent sensitivity of 2.6 x 10(4) mu C Gy(air)(-1) cm(-2) under a low field of 1 V cm(-1). The detectable dose rate is as low as 7.09 nGy(air) s(-1). The operational stability is beyond half a year. Although three-dimensional metal halide perovskite (ABX(3)) single crystals are promising next-generation materials for radiation detection, state-of-the-art perovskite X-ray detectors include methylammonium as A-site cations, limiting the operational stability. Previous efforts to improve the stability using formamidinium-caesium-alloyed A-site cations usually sacrifice the detection performance because of high trap densities. Here we successfully solve this trade-off between stability and detection performance by synergistic composition engineering, where we include A-site alloys to decrease the trap density and B-site dopants to release the microstrain induced by A-site alloying. As such, we develop high-performance perovskite X-ray detectors with excellent stability. Our X-ray detectors exhibit high sensitivity of (2.6 +/- 0.1) x 10(4) mu C Gy(air)(-1) cm(-2) under 1 V cm(-1) and ultralow limit of detection of 7.09 nGy(air) s(-1). In addition, they feature long-term operational stability over half a year and impressive thermal stability up to 125 degrees C. We further demonstrate the promise of our perovskite X-ray detectors for low-bias portable applications with high-quality X-ray imaging and monitoring prototypes.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Jiang, Jizhong
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Xiong, Min
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Fan, Ke
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Bao, Chunxiong
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Xin, Deyu
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Pan, Zhengwei
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show more...
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Fei, Linfeng
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Huang, Haitao
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Zhou, Lang
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Yao, Kai
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Zheng, Xiaojia
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Shen, Liang
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Gao, Feng
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
- Articles in the publication
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Nature Photonics
- By the university
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Linköping University