X-ray excited CsPb(Cl,Br)3 perovskite quantum dots-glass composite with long-lifetime

Wang, Congyong; Lin, Hang; Zhang, Zhijun; Qiu, Zhihua; Yang, Hongyi; Cheng, Yao; Xu, Jü; Xiang, Xiaoqiang; Zhang, Liqiang; Wang, Yuansheng

doi:10.1016/j.jeurceramsoc.2020.01.016

Cited by 64 publications

(34 citation statements)

References 33 publications

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“…Figure 2a shows the XRD pattern of b-CPX NCs, observed peaks match well with the cubic CsPbBr 3 structure corresponding to JCPDS number 54-0752 therefore confirming the formation of a pure compound. [50] These also suggest that CsPb(Cl/Br) 3 has similar structure as that of CsPbBr 3 . As shown in Figure 2b for g-CPX-NCs, all of the diffraction peaks are slightly shifted to lower 2θ value compared to cubic b-CPX NCs (space group Pm3m, PDF#73-0692).…”

Section: Characterizationmentioning

confidence: 84%

Tunable CsPb(Br/Cl)₃perovskite nanocrystals and further advancement in designing light emitting fiber membranes

et al. 2021

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Section: Characterizationmentioning

confidence: 84%

Tunable CsPb(Br/Cl)₃perovskite nanocrystals and further advancement in designing light emitting fiber membranes

et al. 2021

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“…Stability is another important aspect for consideration when designing scintillators. The CsPbCl 3‑x Br x nanocrystals are easily damaged by high-power X-ray radiation . Cao et al designed a CsPbBr 3 @Cs 4 PbBr 6 “emitter-in-matrix” structure for the purpose of improved stability .…”

Section: Working Mechanism Of X-ray Scintillators and Detectorsmentioning

confidence: 99%

Metal Halide Perovskites for X-ray Imaging Scintillators and Detectors

et al. 2021

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Radiation detection, using materials to convert high-energy photons to low-energy photons (X-ray imaging) or electrical charges (X-ray detector), has become essential for a wide range of applications including medical diagnostic technologies, computed tomography, quality inspection and security, etc. Metal halide perovskite-based high-resolution scintillation-imaging screens or direct conversion detectors are promising candidates for such applications, because they have high absorption cross sections for X-rays due to their heavy atom (e.g., Pb2+, Bi3+, I–) compositions; moreover, these materials are solution-processable at low temperature, possessing tunable bandgaps, near-unity photoluminescence quantum yields, low trap density, high charge carrier mobility, and fast photoresponse. In this review, we explore and decipher the working mechanism of scintillators and direct conversion detectors as well as the key advantages of halide perovskites for both detection approaches. We further discuss the recent advancements in this promising research area, pointing out the remaining challenges and our perspective for future research directions toward perovskite-based X-ray applications.

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“…Recently, metal halide perovskite materials, including both bulk crystals of organic inorganic hybrid perovskites and nanocrystals (NCs), have been demonstrated [11][12][13][14] to efficiently convert X-ray photons into charge carriers or visible photons [15][16][17][18][19] . In particular, fully inorganic perovskite NCs have advantages such as highly emissive X-raygenerated excitonic states 20 , ultrafast radiative emission rates 21 , and resistance against high-energy radiation 22 , all of which are essential for highly efficient and durable X-ray scintillators.…”

Section: Introductionmentioning

confidence: 99%

Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators

et al. 2020

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Compared with solid scintillators, liquid scintillators have limited capability in dosimetry and radiography due to their relatively low light yields. Here, we report a new generation of highly efficient and low-cost liquid scintillators constructed by surface hybridisation of colloidal metal halide perovskite CsPbA3 (A: Cl, Br, I) nanocrystals (NCs) with organic molecules (2,5-diphenyloxazole). The hybrid liquid scintillators, compared to state-of-the-art CsI and Gd2O2S, demonstrate markedly highly competitive radioluminescence quantum yields under X-ray irradiation typically employed in diagnosis and treatment. Experimental and theoretical analyses suggest that the enhanced quantum yield is associated with X-ray photon-induced charge transfer from the organic molecules to the NCs. High-resolution X-ray imaging is demonstrated using a hybrid CsPbBr3 NC-based liquid scintillator. The novel X-ray scintillation mechanism in our hybrid scintillators could be extended to enhance the quantum yield of various types of scintillators, enabling low-dose radiation detection in various fields, including fundamental science and imaging.

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X-ray excited CsPb(Cl,Br)3 perovskite quantum dots-glass composite with long-lifetime

Cited by 64 publications

References 33 publications

Tunable CsPb(Br/Cl)₃perovskite nanocrystals and further advancement in designing light emitting fiber membranes

Tunable CsPb(Br/Cl)₃perovskite nanocrystals and further advancement in designing light emitting fiber membranes

Metal Halide Perovskites for X-ray Imaging Scintillators and Detectors

Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators

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X-ray excited CsPb(Cl,Br)3 perovskite quantum dots-glass composite with long-lifetime

Cited by 64 publications

References 33 publications

Tunable CsPb(Br/Cl)3perovskite nanocrystals and further advancement in designing light emitting fiber membranes

Tunable CsPb(Br/Cl)3perovskite nanocrystals and further advancement in designing light emitting fiber membranes

Metal Halide Perovskites for X-ray Imaging Scintillators and Detectors

Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators

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Product

Resources

About

Tunable CsPb(Br/Cl)₃perovskite nanocrystals and further advancement in designing light emitting fiber membranes

Tunable CsPb(Br/Cl)₃perovskite nanocrystals and further advancement in designing light emitting fiber membranes