Heterointerface Design of Perovskite Single Crystals for High-Performance X-Ray Imaging
© 2023 Wiley-VCH GmbH..
Metal halide perovskite single crystals (MHP-SCs) are known for their facile fabrication into large sizes using inexpensive solution methods. Owing to their combination of large mobility-lifetime products and strong X-ray absorption, they are considered promising materials for efficient X-ray detection. However, they suffer from large dark currents and severe ion migration, which limit their sensitivity and stability in critical X-ray detection applications. Herein, a heterointerface design is proposed to reduce both the dark current and ion migration by forming a heterojunction. In addition, the carrier transport performance is significantly improved using heterointerface engineering by designing a gradient band structure in the SCs. The SC heterojunction detectors exhibit a high sensitivity of 3.98 × 105 µC Gyair -1 cm-2 with a low detection limit of 12.2 nGyair s-1 and a high spatial resolution of 10.2 lp mm-1 during imaging. These values are among the highest reported for state-of-the-art MHP X-ray detectors. Moreover, the detectors show excellent stability under continuous X-ray irradiation and maintainclear X-ray imaging after 240 d. This study provides novel insights into the design and fabrication of X-ray detectors with high detection efficiency and stability, which are beneficial for developing inexpensive, high-resolution X-ray imaging equipment.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:36 |
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| Enthalten in: |
Advanced materials (Deerfield Beach, Fla.) - 36(2024), 3 vom: 17. Jan., Seite e2305513 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Xiaojie [VerfasserIn] |
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| Links: |
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| Themen: |
Halide perovskite |
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| Anmerkungen: |
Date Revised 18.01.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/adma.202305513 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Metal halide perovskite single crystals (MHP-SCs) are known for their facile fabrication into large sizes using inexpensive solution methods. Owing to their combination of large mobility-lifetime products and strong X-ray absorption, they are considered promising materials for efficient X-ray detection. However, they suffer from large dark currents and severe ion migration, which limit their sensitivity and stability in critical X-ray detection applications. Herein, a heterointerface design is proposed to reduce both the dark current and ion migration by forming a heterojunction. In addition, the carrier transport performance is significantly improved using heterointerface engineering by designing a gradient band structure in the SCs. The SC heterojunction detectors exhibit a high sensitivity of 3.98 × 105 µC Gyair -1 cm-2 with a low detection limit of 12.2 nGyair s-1 and a high spatial resolution of 10.2 lp mm-1 during imaging. These values are among the highest reported for state-of-the-art MHP X-ray detectors. Moreover, the detectors show excellent stability under continuous X-ray irradiation and maintainclear X-ray imaging after 240 d. This study provides novel insights into the design and fabrication of X-ray detectors with high detection efficiency and stability, which are beneficial for developing inexpensive, high-resolution X-ray imaging equipment | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a heterointerface design | |
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| 700 | 1 | |a Chu, Depeng |e verfasserin |4 aut | |
| 700 | 1 | |a Jia, Binxia |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Zeqin |e verfasserin |4 aut | |
| 700 | 1 | |a Pi, Jiacheng |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Zhou |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Yaohui |e verfasserin |4 aut | |
| 700 | 1 | |a Hao, Jinglu |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Ruixin |e verfasserin |4 aut | |
| 700 | 1 | |a Dong, Xiaofeng |e verfasserin |4 aut | |
| 700 | 1 | |a Liang, Yuqian |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Jiangshan |e verfasserin |4 aut | |
| 700 | 1 | |a Najar, Adel |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yucheng |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Shengzhong Frank |e verfasserin |4 aut | |
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