Perovskite-Nanosheet Sensitizer for Highly Efficient Organic X-ray Imaging Scintillator
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2022-11-27
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ArticleAuthors
Wang, Jian-Xin
Wang, Xiaojia
Yin, Jun

Gutierrez Arzaluz, Luis

He, Tengyue
Chen, Cailing

Han, Yu

Zhang, Yuhai

Bakr, Osman

Eddaoudi, Mohamed

Mohammed, Omar F.

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Science Program
Functional Materials Design, Discovery and Development (FMD3)
Functional Nanomaterials Lab (FuNL)
KAUST Catalysis Center (KCC)
KAUST Solar Center (KSC)
Material Science and Engineering Program
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division
Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
Date
2021-11-27Embargo End Date
2022-11-27Submitted Date
2021-10-06Permanent link to this record
http://hdl.handle.net/10754/673784
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The weak X-ray capture capability of organic scintillators always leads to poor imaging resolution and detection sensitivity. Here, we realize an efficient and reabsorption-free organic scintillator at the interface of perovskite nanosheets using a very efficient energy transfer strategy. Our steady-state and ultrafast time-resolved experiments supported by density functional theory calculations demonstrate that an efficient interfacial energy transfer from the perovskite nanosheet to the organic chromophore with thermally activated delayed fluorescence (TADF) character can be achieved. Interestingly, we found that the direct harnessing of both singlet and triplet excitons of the TADF chromophores also contributed greatly to its remarkably enhanced radioluminescence intensity and X-ray sensitivity. A high X-ray imaging resolution of 135 μm and a low detection limit of 38.7 nGy/s were achieved in the fabricated X-ray imaging scintillator.Citation
Wang, J.-X., Wang, X., Yin, J., Gutiérrez-Arzaluz, L., He, T., Chen, C., … Mohammed, O. F. (2021). Perovskite-Nanosheet Sensitizer for Highly Efficient Organic X-ray Imaging Scintillator. ACS Energy Letters, 10–16. doi:10.1021/acsenergylett.1c02173Sponsors
This work was supported by King Abdullah University of Science and Technology (KAUST).Publisher
American Chemical Society (ACS)Journal
ACS Energy LettersAdditional Links
https://pubs.acs.org/doi/10.1021/acsenergylett.1c02173ae974a485f413a2113503eed53cd6c53
10.1021/acsenergylett.1c02173