Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)
Published: Sept. 29, 2022
Lanthanide-doped nanoscintillators are taking the lead in several important fields including radiation detection, biomedicine, both at level of diagnosis and therapy, information encoding.
Language: Английский
Advanced Optical Materials, Journal Year: 2022, Volume and Issue: 10(24)
Published: Oct. 26, 2022
Abstract Near‐infrared phosphor‐converted light‐emitting diodes (NIR pc‐LEDs) have promising applications in food analysis, night vision imaging, and biological probes. Developing NIR phosphors with broadband emission high efficiency has attracted immense interest. Herein, a novel phosphor Ca 2 LuScAl Si O 12 :Cr 3+ (CLSAS:Cr ) is reported for the first time. Under excitation of 442 nm light, CLSAS:Cr shows from 600 to 900 full width at half maximum (FWHM) 142 nm, benefiting emissions two Cr centers CLSAS, which proved by spectra decay curves. The internal quantum (IQE) 73.7% achieved and, 423 K, intensity maintains 76% value room temperature. Combining 450 blue chip, pc‐LED fabricated demonstrated fast imaging veins human palm fist, as well objects.
Language: Английский
Citations
102
Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(21)
Published: June 7, 2023
Abstract Cr 3+ ‐activated Gd 3 Ga 5 O 12 garnet (GGG:Cr ) near‐infrared (NIR) phosphors have shown promising applications in regulating plant growth. However, the low external quantum efficiency (EQE) results a wall‐plug (WPE) of phosphor‐converted light‐emitting diodes (pc)‐LEDs only ≈15%. Herein, an easy strategy to improve luminescent properties GGG:Cr phosphor is reported. Through optimization synthesized technology, EQE enhanced 43.6%. Remarkably, fabricated pc‐LEDs achieve WPE as high 34.3%. These demonstrate significant advancement development and NIR materials pc‐LED devices.
Language: Английский
Citations
56
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Feb. 9, 2024
Abstract High quantum efficiency and wide-band detection capability are the major thrusts of infrared sensing technology. However, bulk materials with high have consistently encountered challenges in integration operational complexity. Meanwhile, two-dimensional (2D) semimetal unique zero-bandgap structures constrained by bottleneck intrinsic efficiency. Here, we report a near-mid ultra-miniaturized graphene photodetector configurable 2D potential well. The well constructed dielectric can spatially (laterally vertically) produce strong trapping force on photogenerated carriers inhibit their recombination, thereby improving external (EQE) photogain device wavelength-immunity, which enable responsivity 0.2 A/W–38 A/W across broad band from 1.55 to 11 µm. Thereafter, room-temperature detectivity approaching 1 × 10 9 cm Hz 1/2 W −1 is obtained under blackbody radiation. Furthermore, synergistic effect electric light field enables high-efficiency polarization-sensitive at tunable wavelengths. Our strategy opens up alternative possibilities for easy fabrication, high-performance multifunctional photodetectors.
Language: Английский
Citations
44
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(15), P. 19068 - 19080
Published: April 8, 2024
Rare-earth-based double perovskite (DP) X-ray scintillators have gained significant importance with low detection limits in medical imaging and radiation owing to their high light yield (LY) remarkable spatial resolution. Herein, we report the synthesis of 3D crystals, namely, Cs
Language: Английский
Citations
21
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7487 - 7497
Published: March 11, 2024
Upconverting nanoparticles (UCNPs) exhibit unique nonlinear optical properties that can be harnessed in microscopy, sensing, and photonics. However, forming high-resolution nano- micropatterns of UCNPs with large packing fractions is still challenging. Additionally, there limited understanding how nanoparticle patterning chemistries are affected by the particle size. Here, we explore direct for 6–18 nm Tm3+-, Yb3+/Tm3+-, Yb3+/Er3+-based using ligands form either new ionic linkages or covalent bonds between under ultraviolet (UV), electron-beam (e-beam), near-infrared (NIR) exposure. We study effect UCNP size on these approaches find 6 patterned compact ionic-based ligands. In contrast, larger requires long-chain, cross-linkable provide sufficient interparticle spacing to prevent irreversible aggregation upon film casting. Compared use a liquid monomer, our method limits cross-linking reaction bound deposited as thin film. This highly localized photo-/electron-initiated chemistry enables fabrication densely packed patterns high resolutions (∼1 μm UV NIR exposure; <100 e-beam). Our upconversion lithography approach demonstrates potential inexpensive continuous-wave lasers 2D 3D colloidal materials. The retain their upconverting, avalanching, photoswitching behaviors, which exploited devices next-generation applications.
Language: Английский
Citations
17
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
Citations
35
Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 956, P. 170311 - 170311
Published: April 26, 2023
Language: Английский
Citations
23
Molecules, Journal Year: 2024, Volume and Issue: 29(3), P. 688 - 688
Published: Feb. 1, 2024
Rare earths, scandium, yttrium, and the fifteen lanthanoids from lanthanum to lutetium, are classified as critical metals because of their ubiquity in daily life. They present magnets cars, especially electric cars; green electricity generating systems computers; steel manufacturing; glass light emission materials for safety lighting lasers; exhaust catalysts supports; artificial rubber production; agriculture animal husbandry; health cancer diagnosis treatment; a variety electronic products essential modern living. have potential replace toxic chromates corrosion inhibition, magnetic refrigeration, new materials, role may expand. This review examines sustainability, environment, recycling, crop production, feedstocks, catalysis, health, well considering future uses.
Language: Английский
Citations
10
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146790 - 146790
Published: Oct. 20, 2023
Language: Английский
Citations
20
The Journal of Physical Chemistry Letters, Journal Year: 2023, Volume and Issue: 14(38), P. 8577 - 8583
Published: Sept. 19, 2023
Inorganic halide double perovskite (DP) nanocrystals (NCs) have attracted great attention because of their nontoxicity, mild reaction conditions, good stability, and excellent optical optoelectronic properties. Herein, we prepare the inorganic terbium DP Cs2BTbCl6 (B = Na or Ag) NCs with bright green photoluminescence (PL) emission. The Na–Tb-based exhibit better PL properties compared Ag–Tb-based NCs, which is due to Cs2NaTbCl6 having a more localized charge carrier distribution on [TbCl6]3– octahedron. incorporation Sb3+ dopant in can construct efficient energy transfer process, resulting doubling efficiency. Furthermore, Cs2NaTbCl6: possess X-ray scintillating performance low-dose detection limit 140 nGyair/s, nearly 5 times sensitive than undoped NCs. optimized show application prospects imaging. This work helps deepen understanding luminescence mechanism, excited state dynamics, scintillation property Tb-based
Language: Английский
Citations
19