Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection
Metal halide perovskites have emerged as excellent direct X‐ray detection materials owing to their large mobility‐lifetime product, strong radiation absorption, and low‐cost preparation. However, it is still a challenge to achieve stable X‐ray detection due to the limitations associated with severe...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2025-02-01
|
| Series: | Small Structures |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/sstr.202400449 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832542151013040128 |
|---|---|
| author | Lijun Xu Qianwen Guan Huang Ye Jianbo Wu Hang Li Yaru Geng Chengshu Zhang Zeng‐Kui Zhu Zhangtong Han Qiuxiao Yin Junhua Luo |
| author_facet | Lijun Xu Qianwen Guan Huang Ye Jianbo Wu Hang Li Yaru Geng Chengshu Zhang Zeng‐Kui Zhu Zhangtong Han Qiuxiao Yin Junhua Luo |
| author_sort | Lijun Xu |
| collection | DOAJ |
| description | Metal halide perovskites have emerged as excellent direct X‐ray detection materials owing to their large mobility‐lifetime product, strong radiation absorption, and low‐cost preparation. However, it is still a challenge to achieve stable X‐ray detection due to the limitations associated with severe ion migration under high voltage bias. Herein, based on a bromine substitution strategy to suppress ion migration, a 2D alternating cations intercalation‐type (ACI) perovskite, (R‐MPA)(BrEA)PbBr4 (1, R‐MPA = methylphenethylamm‐onium; BrEA = 2‐bromoethylamine) is reported to achieve X‐ray detection. Specifically, introducing Br atom forms additional intermolecular interactions (i.e., Br···π) and enhances hydrogen bonding interactions, greatly improving the structure stability. Based on this enhanced interaction, 1 presents a higher activation energy of ion migration (1.05 eV) than that of (R‐MPA)EAPbBr4 resulting in a lower dark current drift of 9.17 × 10−8 nA cm−1 s−1 V−1, revealing that suppression of ion migration. Consequently, the 1‐based detector shows a high sensitivity of 2653.7 μC Gy−1 cm−2 and, most importantly, outstanding operational and environmental stability, maintaining ≈91% of its initial sensitivity at 50 V bias after 90 days in the air. This work demonstrates an efficient strategy for introducing halogen interactions via ACI to suppress ion migration for stable X‐ray detection. |
| format | Article |
| id | doaj-art-15f3f3e5aa404788ad61e841a5eb8b99 |
| institution | Kabale University |
| issn | 2688-4062 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj-art-15f3f3e5aa404788ad61e841a5eb8b992025-02-04T08:10:22ZengWiley-VCHSmall Structures2688-40622025-02-0162n/an/a10.1002/sstr.202400449Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray DetectionLijun Xu0Qianwen Guan1Huang Ye2Jianbo Wu3Hang Li4Yaru Geng5Chengshu Zhang6Zeng‐Kui Zhu7Zhangtong Han8Qiuxiao Yin9Junhua Luo10State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 ChinaMetal halide perovskites have emerged as excellent direct X‐ray detection materials owing to their large mobility‐lifetime product, strong radiation absorption, and low‐cost preparation. However, it is still a challenge to achieve stable X‐ray detection due to the limitations associated with severe ion migration under high voltage bias. Herein, based on a bromine substitution strategy to suppress ion migration, a 2D alternating cations intercalation‐type (ACI) perovskite, (R‐MPA)(BrEA)PbBr4 (1, R‐MPA = methylphenethylamm‐onium; BrEA = 2‐bromoethylamine) is reported to achieve X‐ray detection. Specifically, introducing Br atom forms additional intermolecular interactions (i.e., Br···π) and enhances hydrogen bonding interactions, greatly improving the structure stability. Based on this enhanced interaction, 1 presents a higher activation energy of ion migration (1.05 eV) than that of (R‐MPA)EAPbBr4 resulting in a lower dark current drift of 9.17 × 10−8 nA cm−1 s−1 V−1, revealing that suppression of ion migration. Consequently, the 1‐based detector shows a high sensitivity of 2653.7 μC Gy−1 cm−2 and, most importantly, outstanding operational and environmental stability, maintaining ≈91% of its initial sensitivity at 50 V bias after 90 days in the air. This work demonstrates an efficient strategy for introducing halogen interactions via ACI to suppress ion migration for stable X‐ray detection.https://doi.org/10.1002/sstr.202400449alternating cation intercalation‐type perovskiteshalogen interactionsion migrationsX‐ray detection |
| spellingShingle | Lijun Xu Qianwen Guan Huang Ye Jianbo Wu Hang Li Yaru Geng Chengshu Zhang Zeng‐Kui Zhu Zhangtong Han Qiuxiao Yin Junhua Luo Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection Small Structures alternating cation intercalation‐type perovskites halogen interactions ion migrations X‐ray detection |
| title | Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection |
| title_full | Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection |
| title_fullStr | Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection |
| title_full_unstemmed | Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection |
| title_short | Bromine‐Substituted Cation Anchoring to Suppress Ion Migration in Alternating Cations Intercalation‐Type Perovskite for Stable X‐Ray Detection |
| title_sort | bromine substituted cation anchoring to suppress ion migration in alternating cations intercalation type perovskite for stable x ray detection |
| topic | alternating cation intercalation‐type perovskites halogen interactions ion migrations X‐ray detection |
| url | https://doi.org/10.1002/sstr.202400449 |
| work_keys_str_mv | AT lijunxu brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT qianwenguan brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT huangye brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT jianbowu brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT hangli brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT yarugeng brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT chengshuzhang brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT zengkuizhu brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT zhangtonghan brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT qiuxiaoyin brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection AT junhualuo brominesubstitutedcationanchoringtosuppressionmigrationinalternatingcationsintercalationtypeperovskiteforstablexraydetection |