Ytterbium-Doped Cesium Lead Chloride Perovskite as an X-ray Scintillator with High Light Yield

Dagnall, Katelyn A.; Conley, Ashley M.; Yoon, Lucy U.; Rajeev, Haritha S.; Lee, Seunghun; Choi, Joshua J.

doi:10.1021/acsomega.2c01712

Cited by 21 publications

(20 citation statements)

References 38 publications

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“…[14] Lately, Choi et al proved that the quantum cutting process of Yb 3+ can also be observed in the CsPbCl 3 :Yb 3+ powders. [15] Gamelin et al demonstrated for the first time that Yb 3+ substituted exclusively at Pb 2+ sites in ytterbium-doped CsPbCl 3 , and adopted a pseudo-octahedral Cl − coordination environment similar to that of Pb 2+ . [16] Inspired by the aforementioned motivations, we first develop a modified solution crystallization method to successfully dope a series of rare earth ions (RE 3+ : Er 3+ , Yb 3+ , and Yb 3+ /Er 3+ pairs) into CsPbCl x Br 3−x SCs.…”

Section: Introductionmentioning

confidence: 99%

X‐Ray Quantum Cutting Scintillator Based on CsPbCl_xBr₃₋_x:Yb³⁺ Single Crystals

Song

Wang

et al. 2023

Laser & Photonics Reviews

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Metal-halide perovskites, especially for 3D halide perovskite single crystals (SCs), are emerging as the promising scintillators. However, the strong self-absorption and low light yield of these perovskites restrict their practical applications. Quantum cutting can convert a high energy photon into multiple low energy photons, endowing a large Stokes shift and high photoluminescent quantum yield (PLQY). Here, this work reports a novel quantum cutting material, CsPbCl x Br 3−x :Yb 3+ perovskite SCs, with the PLQY of 149% and a Stokes shift >550 nm, successfully conquering the issues of poor PLQY induced by the thermal quenching and the large self-absorption in perovskite SCs. Benefiting from the extremely high PLQY and negligible self-absorption effect, the first high-performance quantum cutting scintillators based on CsPbCl x Br 3−x :Yb 3+ perovskite SCs are developed, exhibiting high transmittance, large X-ray absorption/conversion efficiency, outstanding light yield of ≈1.12 × 10 5 photons MeV −1 , and a detection limit as low as 176.5 nGy air s −1 . Finally, a single-pixel X-ray imaging is achieved by integrating CsPbCl 3 :Yb 3+ SCs with silicon photomultiplier. This work sheds light on exploring highly competitive scintillators beyond the scope of traditional perovskites.

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Section: Introductionmentioning

confidence: 99%

X‐Ray Quantum Cutting Scintillator Based on CsPbCl_xBr₃₋_x:Yb³⁺ Single Crystals

Song

Wang

et al. 2023

Laser & Photonics Reviews

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“…In this review, we highlight several parameters for further analysis in terms of pNC size and Yb content, as well as their PL QY, both in NIR and visible (Vis) spectral regions: amount and type of ligands, temperature of the reaction, and Yb-precursor type and its amount in the synthesis. All the dependencies revealed in the discussion later are based on the published data from the papers [ 13 , 15 , 17 , 23 , 26 , 31 , 43 , 44 , 46 , 55 , 56 , 57 , 58 , 59 , 60 ] and provided in Table 1 .…”

Section: Dependence Of the Properties Of Yb-doped Lead–halide Pncs On...mentioning

confidence: 99%

“…Their amount in the reaction mixture together with the molar ratio affects both the morphology and optical properties of synthesized NCs. Herein, the syntheses which used both OlAm and OlAc were considered for further analysis ( Figure 5 a–d) [ 13 , 15 , 17 , 23 , 26 , 31 , 43 , 44 , 46 , 55 , 56 , 57 , 58 , 59 , 60 ].…”

Section: Dependence Of the Properties Of Yb-doped Lead–halide Pncs On...mentioning

confidence: 99%

“…Huang et al showed that at 0.5 (‘reaching a critical value of 0.45′) Yb/Pb precursor molar ratio the Yb content reached the maximum of 7 mol% and then with an increase in Yb/Pb remained the same [ 15 ]. Dagnall et al probed Yb content from 0 to 60% and showed that the maximal radioluminescence intensity of CsPb(Cl 1−x Br x ) 3 pNCs was observed for 5% [ 59 ]. A similar trend was observed for lead-free pNCs, with maximum PL QY observed at 3 mol% for Cs 2 AgBiCl 6 and Cs 2 AgBiBr 6 [ 60 ].…”

Section: Dependence Of the Properties Of Yb-doped Lead–halide Pncs On...mentioning

confidence: 99%

“…Data are taken from the refs. [ 13 , 15 , 17 , 23 , 26 , 31 , 43 , 44 , 46 , 55 , 56 , 57 , 58 , 59 , 60 ] and summarized in Table 1 .…”

Section: Figurementioning

confidence: 99%

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Ytterbium-Doped Lead–Halide Perovskite Nanocrystals: Synthesis, Near-Infrared Emission, and Open-Source Machine Learning Model for Prediction of Optical Properties

et al. 2023

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Lead–halide perovskite nanocrystals are an attractive class of materials since they can be easily fabricated, their optical properties can be tuned all over the visible spectral range, and they possess high emission quantum yields and narrow photoluminescence linewidths. Doping perovskites with lanthanides is one of the ways to widen the spectral range of their emission, making them attractive for further applications. Herein, we summarize the recent progress in the synthesis of ytterbium-doped perovskite nanocrystals in terms of the varying synthesis parameters such as temperature, ligand molar ratio, ytterbium precursor type, and dopant content. We further consider the dependence of morphology (size and ytterbium content) and optical parameters (photoluminescence quantum yield in visible and near-infrared spectral ranges) on the synthesis parameters. The developed open-source code approximates those dependencies as multiple-parameter linear regression and allows us to estimate the value of the photoluminescence quantum yield from the parameters of the perovskite synthesis. Further use and promotion of an open-source database will expand the possibilities of the developed code to predict the synthesis protocols for doped perovskite nanocrystals.

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Water as the Only Solvent for CsPbCl₃ and NIR‐Emitting CsPbCl₃:Yb³⁺ Films by Antisolvent‐Enhanced Crystallization in Aerosol‐Assisted Chemical Vapor Deposition

Becerril

Balderas

Hernandez

et al. 2023

Adv Materials Technologies

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cell applications and light-emitting diodes as the active layer. MHPs have been intensively researched to modulate and optimize their performance by changing their chemical composition, crystal orientation, dimensionality, and morphology to fit the vast number of new potential applications, in which MHPs materials seem to be the next breakthrough. For example, several reports have highlighted the unprecedented quantum-cutting mechanism in Yb 3+ -doped CsPbX 3 nanocrystals and thin films with photoluminescence quantum efficiencies exceeding 100%, with practical applications in solar spectral shifting, luminescent solar concentration, and near infra-red (NIR) light emitting diodes. [2,13,22,23] Several essential issues must be overcome before perovskite hits the market. Most of these opportunity areas are chemical stability, toxicity, and processability. Since water and oxygen play a significant role in the perovskite degradation mechanism, [24,25] the synthesis of MHPs materials has been restricted to strict atmospheric conditions to avoid moisture and ambient air. [26] Among the synthetic routes for perovskite film deposition, solution-based techniques are highly advantageous, where spin coating is the most studied technique. [29] However, its implementation at an industrial production scale is usually limited CsPbX 3 (X = Cl, Br, I) perovskites have emerged as promising materials for optoelectronic applications. However, thin film synthesis has essential issues such as chemical stability, toxicity, and processability. In this work, a green synthesis approach using water as the only solvent to deposit CsPbCl 3 and CsPbCl 3 :Yb 3+ films by aerosol assisted chemical vapor deposition technique under ambient atmospheric conditions, is proposed. X-ray diffraction pattern and X-ray photoelectron spectroscopy analysis confirm the phase purity and negligible degradation by using water during deposition. Moreover, CsPb 2 Cl 5 secondary phase is detected as a substitution and anchoring doped mechanism response for doped materials. Additionally, green antisolvents (alcohols and propan-2-one) are used to assist the crystallization process; all the green antisolvents result in an increased substrate coverage, highlighting those with high boiling points and low heat of combustion that promote heterogeneous nucleation. As-deposited films show a photoluminescent excitonic emission peak around 418 nm and an additional peak at 984 nm emission band associated with the Yb 3+ infrared 2F 5/2 to 2F 7/2 transitions for doped materials. Near infra-red photoluminescence emission is notably improved upon antisolvent assistance up to a threefold increase for ethanol, reaching a photoluminescence quantum yield of 33.94% at low Yb 3+ concentration.

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Ytterbium-Doped Cesium Lead Chloride Perovskite as an X-ray Scintillator with High Light Yield

Cited by 21 publications

References 38 publications

X‐Ray Quantum Cutting Scintillator Based on CsPbCl_xBr₃₋_x:Yb³⁺ Single Crystals

X‐Ray Quantum Cutting Scintillator Based on CsPbCl_xBr₃₋_x:Yb³⁺ Single Crystals

Ytterbium-Doped Lead–Halide Perovskite Nanocrystals: Synthesis, Near-Infrared Emission, and Open-Source Machine Learning Model for Prediction of Optical Properties

Water as the Only Solvent for CsPbCl₃ and NIR‐Emitting CsPbCl₃:Yb³⁺ Films by Antisolvent‐Enhanced Crystallization in Aerosol‐Assisted Chemical Vapor Deposition

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Ytterbium-Doped Cesium Lead Chloride Perovskite as an X-ray Scintillator with High Light Yield

Cited by 21 publications

References 38 publications

X‐Ray Quantum Cutting Scintillator Based on CsPbClxBr3−x:Yb3+ Single Crystals

X‐Ray Quantum Cutting Scintillator Based on CsPbClxBr3−x:Yb3+ Single Crystals

Ytterbium-Doped Lead–Halide Perovskite Nanocrystals: Synthesis, Near-Infrared Emission, and Open-Source Machine Learning Model for Prediction of Optical Properties

Water as the Only Solvent for CsPbCl3 and NIR‐Emitting CsPbCl3:Yb3+ Films by Antisolvent‐Enhanced Crystallization in Aerosol‐Assisted Chemical Vapor Deposition

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X‐Ray Quantum Cutting Scintillator Based on CsPbCl_xBr₃₋_x:Yb³⁺ Single Crystals

X‐Ray Quantum Cutting Scintillator Based on CsPbCl_xBr₃₋_x:Yb³⁺ Single Crystals

Water as the Only Solvent for CsPbCl₃ and NIR‐Emitting CsPbCl₃:Yb³⁺ Films by Antisolvent‐Enhanced Crystallization in Aerosol‐Assisted Chemical Vapor Deposition