Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager
Abstract Lead‐free metal‐halide scintillators are gaining considerable attention as more eco‐friendly and superior alternatives to their lead‐based counterparts. However, novel broad‐emission band scintillators like the state‐of‐the‐art CsI: Tl scintillator, which can generate high signals due to it...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
|
| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202405995 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832582758940016640 |
|---|---|
| author | Haocheng Lv Wenyi Shao Haifeng Chen Guoyang Zhu Yao Wang Zhenzhong Zhang Hongwei Liang |
| author_facet | Haocheng Lv Wenyi Shao Haifeng Chen Guoyang Zhu Yao Wang Zhenzhong Zhang Hongwei Liang |
| author_sort | Haocheng Lv |
| collection | DOAJ |
| description | Abstract Lead‐free metal‐halide scintillators are gaining considerable attention as more eco‐friendly and superior alternatives to their lead‐based counterparts. However, novel broad‐emission band scintillators like the state‐of‐the‐art CsI: Tl scintillator, which can generate high signals due to its strong compatibility with the spectral responsivity of regular photodiode arrays, are still less investigated. Herein, a TPA2Cu2I4 (TPACI) copper halide scintillator with a unique ultra‐broad emission (FWHM > 240 nm) is developed, which shows universal compatibility with the peak response range of commercial photodetector. The optical properties characterization and mechanism analysis indicates that this ultra‐broad spectrum can be attributed to the dual self‐trapped exciton (STE) emission consisting of two emission bands. Benefiting from the large Stokes shift and ultra‐broad emission band enabled by the dual STE, the self‐absorption‐free TPACI scintillator exhibits efficient white light emission with a high photoluminescence quantum yields of 94.27%, a high light yield of ≈40124 photons MeV−1. Moreover, a prototype of a TPACI scintillator‐based X‐ray imager is assembled for inspecting the internal structures of biological and electronic devices, which demonstrated a high resolution of 5.5 lp mm−1 at modulation transfer function = 0.2. These findings provide insights into the design of efficient, broad‐emission scintillators for high‐resolution X‐ray imaging. |
| format | Article |
| id | doaj-art-88f864a56c84443abb28d6299194b3ae |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-88f864a56c84443abb28d6299194b3ae2025-01-29T09:50:18ZengWileyAdvanced Science2198-38442025-01-01124n/an/a10.1002/advs.202405995Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray ImagerHaocheng Lv0Wenyi Shao1Haifeng Chen2Guoyang Zhu3Yao Wang4Zhenzhong Zhang5Hongwei Liang6Dalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaDalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaDalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaDalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaDalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaDalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaDalian Key Laboratory of Wide Band Gap Semiconductor Devices Integration and System, School of Integrated CircuitsDalian University of TechnologyDalian 116024 ChinaAbstract Lead‐free metal‐halide scintillators are gaining considerable attention as more eco‐friendly and superior alternatives to their lead‐based counterparts. However, novel broad‐emission band scintillators like the state‐of‐the‐art CsI: Tl scintillator, which can generate high signals due to its strong compatibility with the spectral responsivity of regular photodiode arrays, are still less investigated. Herein, a TPA2Cu2I4 (TPACI) copper halide scintillator with a unique ultra‐broad emission (FWHM > 240 nm) is developed, which shows universal compatibility with the peak response range of commercial photodetector. The optical properties characterization and mechanism analysis indicates that this ultra‐broad spectrum can be attributed to the dual self‐trapped exciton (STE) emission consisting of two emission bands. Benefiting from the large Stokes shift and ultra‐broad emission band enabled by the dual STE, the self‐absorption‐free TPACI scintillator exhibits efficient white light emission with a high photoluminescence quantum yields of 94.27%, a high light yield of ≈40124 photons MeV−1. Moreover, a prototype of a TPACI scintillator‐based X‐ray imager is assembled for inspecting the internal structures of biological and electronic devices, which demonstrated a high resolution of 5.5 lp mm−1 at modulation transfer function = 0.2. These findings provide insights into the design of efficient, broad‐emission scintillators for high‐resolution X‐ray imaging.https://doi.org/10.1002/advs.202405995emerging copper halidescintillatorultra‐broad emissionX‐ray imager |
| spellingShingle | Haocheng Lv Wenyi Shao Haifeng Chen Guoyang Zhu Yao Wang Zhenzhong Zhang Hongwei Liang Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager Advanced Science emerging copper halide scintillator ultra‐broad emission X‐ray imager |
| title | Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager |
| title_full | Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager |
| title_fullStr | Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager |
| title_full_unstemmed | Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager |
| title_short | Ultra‐Broad Emission Copper Halide Scintillator‐Based X‐Ray Imager |
| title_sort | ultra broad emission copper halide scintillator based x ray imager |
| topic | emerging copper halide scintillator ultra‐broad emission X‐ray imager |
| url | https://doi.org/10.1002/advs.202405995 |
| work_keys_str_mv | AT haochenglv ultrabroademissioncopperhalidescintillatorbasedxrayimager AT wenyishao ultrabroademissioncopperhalidescintillatorbasedxrayimager AT haifengchen ultrabroademissioncopperhalidescintillatorbasedxrayimager AT guoyangzhu ultrabroademissioncopperhalidescintillatorbasedxrayimager AT yaowang ultrabroademissioncopperhalidescintillatorbasedxrayimager AT zhenzhongzhang ultrabroademissioncopperhalidescintillatorbasedxrayimager AT hongweiliang ultrabroademissioncopperhalidescintillatorbasedxrayimager |