Mostrando 5,761 - 5,780 Resultados de 5,854 Para Buscar 'perovskita~', tiempo de consulta: 4.11s Limitar resultados
  1. 5761
    “…FTIR, Raman spectroscopy, TEM, and X-ray diffraction confirmed the presence of spinel core and perovskite shell phases with average crystallite sizes of 70–90 nm. …”
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  2. 5762
    por Tuluk, Anton, van der Zwaag, Sybrand
    Publicado 2023
    “…X-ray diffraction confirmed a pure perovskite phase for the compositions, which was explored without secondary phases. …”
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  3. 5763
  4. 5764
  5. 5765
    “…Deposition on TiO(2)(110) results in epitaxial La(2/3)TiO(3), an orthorhombic perovskite of interest as a microwave dielectric material and an ion conductor. …”
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  6. 5766
    “…Next, experimental results from two data sets measured at the FALCON instrument of Helmholtz-Zentrum Berlin are presented: A cylindrical alpha iron (α-Fe) reference sample with 5 mm diameter and 5 mm height, as well as a 2 mm(3) layered perovskite (YBaCuFeO(5)). Using Laue3DND, we were able to retrieve the position and orientation of 97 out of 100 grains from a synthetic α-Fe data set, as well as 24 and 9 grains respectively from the α-Fe and YBaCuFeO(5) sample measured at FALCON. …”
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  7. 5767
    “…Over the last few decades, manipulating the metal-insulator (MI) transition in perovskite oxides (ABO(3)) via an external control parameter has been attempted for practical purposes, but with limited success. …”
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  8. 5768
    por Zhang, Yichi, Apley, Daniel W., Chen, Wei
    Publicado 2020
    “…The chosen materials design examples represent two different scenarios, one on concurrent materials selection and microstructure optimization for optimizing the light absorption of a quasi-random solar cell, and another on combinatorial search of material constitutes for optimal Hybrid Organic-Inorganic Perovskite (HOIP) design. It is found that in all test examples the mapped LVs provide intuitive visualization and substantial insight into the nature and effects of the qualitative factors. …”
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  9. 5769
    “…We investigated the opportunities for obtaining hexaferrites Pb(1−x)La(x)Fe(12−x)Zn(x)O(19) (x = 0–1) from citrate–glycerin gel and showed that synthesis occurs via the formation of the Fe(3)O(4) phase; products with a small amount of hematite impurity Fe(2)O(3) can be obtained after firing at 800 to 900 °C with 0 ≤ x ≤ 0.5. If x > 0.5, perovskite-like LaFeO(3) is formed in samples, so that if x = 0.9–1, the synthesis products virtually do not contain phases with hexaferrite structures and represent a mixture of LaFeO(3), Fe(2)O(3), and Fe(3)O(4). …”
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  10. 5770
    “…Since selective detection of multiple narrow spectral bands in the near-infrared (NIR) region still poses a fundamental challenge, we have, in this work, developed NIR photodetectors (PDs) using photon upconversion nanocrystals (UCNCs) combined with perovskite films. To conquer the relatively high pumping threshold of UCNCs, we designed a novel cascade optical field modulation strategy to boost upconversion luminescence (UCL) by cascading the superlensing effect of dielectric microlens arrays and the plasmonic effect of gold nanorods, which readily leads to a UCL enhancement by more than four orders of magnitude under weak light irradiation. …”
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  11. 5771
  12. 5772
    “…We applied ultra high dilution (UHD) technology to pre-treat Bi(3)TiNbO(9) powders and used hot pressing to prepare perovskite-layer structured ceramic specimens. Main characteristics of the synthesized piezoelectric ceramic specimens (the dimensions of the Bi(3)TiNbO(9) orthorhombic unit cell, dielectric permittivity, dielectric loss, piezoelectric coefficient d(33) and pyroelectric coefficient p(σ)) and their temperature-dependent variations were studied using piezoelectric, dielectric, and pyroelectric measurements. …”
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  13. 5773
    “…Finally, as a proof of concept, the transient absorption spectrum of a methylammonium lead iodide perovskite film is taken, showing great signal to noise with only 1,000 shot pairs. …”
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  14. 5774
    por Penner, Simon
    Publicado 2021
    “…As catalyst activation studies are increasingly becoming a hot topic in heterogeneous catalysis, the (self-)activation of oxide- and intermetallic compound-based materials during methanol steam and methane dry reforming is highlighted. The perovskite LaNiO(3) is selected as an example to show the complex structural dynamics before and during methane dry reforming, which is only revealed upon monitoring all intermediate crystalline species in the transformation from LaNiO(3) into Ni/La(2)O(3)/La(2)O(2)CO(3). …”
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  15. 5775
  16. 5776
    “…Fast neutron imaging with colloidal nanocrystals (NCs) was demonstrated to eliminate light scattering. While lead halide perovskite (LHP) FAPbBr(3) NCs emitting brightly showed poor spatial resolution due to reabsorption, the Mn(2+)-doped CsPb(BrCl)(3) NCs with oleyl ligands had higher resolution because of large apparent Stokes shift but insufficient concentration for high light yield. …”
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  17. 5777
  18. 5778
    “…A variety of different synthesis methods for the fabrication of solar cell absorbers based on the lead halide perovskite methylammonium lead iodide (MAPbI(3), MAPI) have been successfully developed in the past. …”
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  19. 5779
    “…In addition, we report a solvent-compatible experiment for transferring AgNW/SWNT films onto a solvent-sensitive perovskite material (CH(3)NH(3)PbI(3)).…”
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  20. 5780
    “…However, recent printing processes for piezoelectrics are hindered by the high sintering temperatures required for conventional perovskite fabrication techniques. Thus, a process was developed to manufacture lead-free printed piezoelectric devices at low temperatures to enable integration with eco-friendly substrates and electrodes. …”
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