Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(6), P. 2389 - 2396
Published: Jan. 1, 2023
A glass scintillator with high spatial resolution of 20 lp mm −1 and refreshable X-ray imaging is designed. The practical tests also reveal the great potential for applications in imaging.
Language: Английский
Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(4), P. 1207 - 1261
Published: Feb. 2, 2023
Ionizing radiation such as X-rays and γ-rays has been extensively studied used in various fields medical imaging, radiographic nondestructive testing, nuclear defense, homeland security, scientific research. Therefore, the detection of high-energy with high-sensitivity low-cost-based materials devices is highly important desirable. Halide perovskites have emerged promising candidates for due to large light absorption coefficient, resistivity, low leakage current, high mobility, simplicity synthesis processing compared commercial silicon (Si) amorphous selenium (
Language: Английский
Citations
109
Accounts of Chemical Research, Journal Year: 2022, Volume and Issue: 56(1), P. 37 - 51
Published: Dec. 19, 2022
X-ray luminescence is an optical phenomenon in which chemical compounds known as scintillators can emit short-wavelength light upon the excitation of photons. Since X-rays exhibit well-recognized advantages deep penetration toward tissues and a minimal autofluorescence background biological samples, has been increasingly becoming promising tool for tackling challenges fields imaging, biosensing, theragnostics. In recent years, emergence nanocrystal have further expanded application scenarios luminescence, such high-resolution autofluorescence-free detection biomarkers, noninvasive phototherapy tissues. Meanwhile, holds great promise breaking depth dependency deep-seated lesion treatment achieving synergistic radiotherapy with phototherapy.In this Account, we provide overview advances developing advanced applications theragnostics, optogenetics neuromodulation. We first introduce solution-processed lead halide all-inorganic perovskite that are able to convert photons multicolor luminescence. developed nanoscintillator-based detector imaging internal structure electronic circuits samples. development flexible using solution-processable lanthanide-doped nanoscintillators featuring long-lived image three-dimensional irregularly shaped objects. also outline general principles high-contrast vivo combines functional biomolecules aptamers, peptides, antibodies. High-quality nanoprobes were engineered achieve high-sensitivity various enabled avoidance interference from matrix photon scattering. By marrying probes stimuli-responsive materials, multifunctional theragnostic nanosystems constructed on-demand gas excellent therapeutic effects. taking advantage capability penetrate skull, demonstrated controllable, wireless optogenetic neuromodulation while obviating damage traditional fibers. Furthermore, discussed detail some future terms scintillator synthesis surface modification, mechanism studies, their other potential useful guidance advancing
Language: Английский
Citations
79
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(44)
Published: Feb. 28, 2023
Abstract Recently, the newly‐emerging lead‐free metal‐halide materials with less toxicity and superior optoelectronic properties have received wide attention as safer potentially more robust alternatives to lead‐based perovskite counterparts. Among them, ternary copper halides (TCHs) become a vital group due their unique features, including abundant structural diversity, ease of synthesis, unprecedented properties, high abundance, low cost. Although recent efforts in this field made certain progresses, some scientific technological issues still remain unresolved. Herein, comprehensive up‐to‐date overview progress on fundamental characteristics TCH versatile applications is presented, which contains topics such as: i) crystal electronic structure features synthesis strategies; ii) mechanisms self‐trapped excitons, luminescence regulation, environmental stability; iii) burgeoning devices phosphor‐converted white light‐emitting diodes (WLEDs), electroluminescent LEDs, anti‐counterfeiting, X‐ray scintillators, photodetectors, sensors, memristors. Finally, current challenges together future perspectives development are also critically described, considered be critical for accelerating commercialization these rapidly evolving technologies.
Language: Английский
Citations
78
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(26)
Published: March 27, 2023
High-performance X-ray scintillators with low detection limits and high light yield are of great importance a challenge for low-dose imaging in medical diagnosis industrial detection. In this work, the synthesis new 2D perovskite, Cs2 CdBr2 Cl2 , via hydrothermal reaction is reported. By doping Mn2+ into yellow emission located at 593 nm obtained, photoluminescence quantum (PLQY) :5%Mn2+ perovskite reaches highest value 98.52%. The near-unity PLQY negligible self-absorption enable excellent scintillation performance 64 950 photons MeV-1 limit 17.82 nGyair s-1 . Moreover, combining poly(dimethylsiloxane) to fabricate flexible scintillator screen achieves resolution 12.3 line pairs (lp) mm-1 results suggest that promising candidate high-resolution imaging. study presents approach designing high-performance through metal-ion doping.
Language: Английский
Citations
58
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(47)
Published: July 31, 2023
Abstract Lead‐free metal halides have recently received sustained attention because of their nontoxicity, low‐cost, as well excellent stability and optoelectronic properties. However, most the reported lead‐free are synthesized via slow solution‐processing at high temperature in toxic solvents, which may impede commercial applications. Here, a solvent‐free strategy is proposed to synthesize inorganic rubidium copper (Rb 2 CuX 3 , X = Cl, Br) room temperature, exhibit efficient violet emission dominated by self‐trapped excitons (STEs) mechanism attractive stabilities against ultraviolet illumination heating. Thus, Rb powders employed emitters scintillators applied wireless light communication X‐ray imaging technologies. Under orthogonal frequency division multiplexing modulation, demonstrate broad −3 dB bandwidth 26.3 MHz data rate 205.1 Mbps. Additionally, flexible scintillation films based on as‐prepared fabricated show outstanding properties, including spatial resolution 18.1 lp mm −1 low detection limit 104 nGy air s promising performance for irregular objects. These results suggest large‐scale production nontoxic potential commercialization fields high‐speed radiography.
Language: Английский
Citations
57
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(44)
Published: Aug. 21, 2023
Abstract Fluorescence thermometry has been propelled to the forefront of scientific attention due its high spatial resolution and remote non‐invasive detection. However, recent generations thermometers still suffer from limited thermal sensitivity ( S r ) below 10% change per Kelvin. Herein, this work presents an ideal temperature‐responsive fluorescence material through Te 4+ ‐doped 0D Cs 2 ScCl 5 ·H O, in which isolated polyhedrons endow highly localized electronic structures, strong electron–phonon coupling facilitates formation self‐trapped excitons (STEs). With rising temperature, dramatic asymmetric expansion soft lattice induces increased defects, exciton–phonon coupling, low activation energy, evokes a rapid de‐trapping process STEs, enabling several orders magnitude changes lifetime over narrow temperature range. After regulating with different doping, record‐high (27.36% K −1 lifetime‐based detection is achieved at 325 K. The robust stability against multiple heating/cooling cycles long‐term measurements enables uncertainty 0.067 Further, developed are demonstrated for local monitoring operating on internal components. It believed that constitutes solid step towards building next generation ultrasensitive based low‐dimensional metal halides.
Language: Английский
Citations
55
Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(34), P. 11664 - 11670
Published: Jan. 1, 2023
SiBNaBaGd–5.0Tb glass scintillators with a high spatial resolution of 20 lp mm −1 and XEL intensity are reported.
Language: Английский
Citations
48
Advanced Science, Journal Year: 2023, Volume and Issue: 10(15)
Published: Feb. 24, 2023
Abstract Application of long‐persistent luminescence (LPL) materials in many technological fields is the spotlight. However, exploration undoped persistent luminescent with high emission efficiency, robust stability, and long duration remains challenging. Here, inorganic cesium cadmium chlorine (CsCdCl 3 ) developed, featuring remarkable LPL characteristics at room temperature, which synthesized by a facile hydrothermal method. Excited ultraviolet light, CsCdCl crystals exhibit an intense yellow large photoluminescence quantum yield ≈90%. Different from reported systems lanthanides or transition metals doping, without dopants perform 6000 s. Joint experiment‐theory characterizations reveal intrinsic point defects act as trap centers excited electrons carrier de‐trapping process such sites to localized contributes LPL. Encouraged attractive fluorescence well good stability against environment oxygen/moisture (75%), heat (100 °C for 10 h), light irradiation, effective dual‐mode information storage‐reading application demonstrated. The results open up new frontier exploring provide opportunity advanced storage compatible practical applications.
Language: Английский
Citations
47
Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(13)
Published: April 5, 2023
Abstract Zero‐dimensional (0D) structure‐based manganese metal halides (MHs) are believed to be the most promising candidates for next‐generation X‐ray scintillators due their intense radioluminescence and environmental friendliness. However, low‐temperature (<180 °C), large‐area integration with more efficient detection remains a tremendous challenge. Herein, from perspective of cation (ionic liquids) structure design, basic physical parameters 0D MHs regulated. And calculations experimental results demonstrate larger‐size cations that induce lower melting temperatures, larger exciton‐binding energies, ion migration energy, tunable hardness, which desirable MHscintillators. As result, champion materialHTP 2 MnBr 4 is achieved as glassy transparency wafer by (165 °C) melt‐quenching. Its application imaging features high spatial resolution (17.28 lp mm −1 ), scalability (>30 × 30 cm strong coupling force. Furthermore, HTP glass reproducible properties demonstrates light yield (38 000 photon MeV excellent irradiation stability, low limit (0.13 µGy s ). The authors believe this work will provide guidance MHscintillators further commercial applications.
Language: Английский
Citations
45
Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(49), P. 27095 - 27102
Published: Nov. 28, 2023
Stable luminescent radicals are open-shell emitters with unique doublet emission characteristics. This feature makes stable exhibit widespread application prospects in constructing optical, electrical, and magnetic materials. In this work, a radical-based X-ray scintillator of AuPP-1.0 was prepared, which exhibited high excited luminescence (XEL) efficiency as well excellent stability. A mechanism study showed that the heavy atom Au endowed it effective absorption X-rays, characteristics significantly increased its exciton utilization rate radioluminescence process. Moreover, has good processability to fabricate flexible screen for high-quality imaging, whose resolution can reach 20 LP mm-1. work demonstrates is beneficial improving radioluminescence, providing brand-new strategy construction high-performance scintillators.
Language: Английский
Citations
45