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Sökning: WFRF:(Agren H)

  • Resultat 1-50 av 134
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  • Zhao, Y., et al. (författare)
  • Bismuth nanoplatelets : universal synthetic strategy and emerging application for PEC-type photodetectors
  • 2023
  • Ingår i: MATERIALS TODAY NANO. - : Elsevier BV. - 2588-8420. ; 23
  • Tidskriftsartikel (refereegranskat)abstract
    • Bi nanoplatelets (NPLs) with a narrow size distribution and high yield have been successfully fabricated by a novel two-step sonication-assisted solvothermal method. Applied as photo-electrochemical (PEC)-type photodetectors (PDs), it is shown that the Bi NPLs exhibit a pronounced photo-response ranging from the ultraviolet to the visible regions. The photo-response performance of Bi NPLs-based PDs was adjusted by external conditions and interpreted by density functional theory calculations in terms of the formation of the respective Bi-based compounds. The PEC results demonstrate that the optimal photocurrent density (P-ph) and photoresponsivity (R-ph) can reach 12.27 mu A/cm(2) and 3016 mu A/W in alkaline electrolytes, respectively. Besides, the Bi NPLs-based PDs exhibit superb long-term cycling stability (similar to 97.86% remained after 1000 cycles). We conclude that Bi NPLs demonstrate great promise as an emerging building block for the design of high-performance PEC-type PDs as well as other novel optoelectronic devices, holding the potential for breakthrough developments in these fields.
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  • Gelmukhanov, F, et al. (författare)
  • Theory of Auger spectra for molecular-field-split core levels
  • 1996
  • Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. ; 53:3, s. 1379-1387
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • A theory for nonradiative decay of molecular-held-split states is presented. It is shown that the relative inner-shell sublevel cross sections for Auger transitions are sensitively dependent on the matching of spin-orbit and molecular-field interactions.
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  • Kukk, E, et al. (författare)
  • Raman versus non-Raman behavior in resonant auger spectra of HCl
  • 1996
  • Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. ; 76:17, s. 3100-3103
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Two different types of Anger processes are shown to constitute the resonant Anger spectra of HCl: one which does and one which does not show Raman narrowing with the decrease of the spectral width of the exciting radiation. An analytical explanation for t
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  • O'Shea, JN, et al. (författare)
  • Hydrogen-bond induced surface core-level shift in isonicotinic acid
  • 2001
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Intermolecular hydrogen-bonding in thick films of isonicotinic acid evaporated onto rutile TiO2(110) has been investigated with X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The rate of deposition is found to be a key fac
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  • Piancastelli, MN, et al. (författare)
  • Bond-distance-dependent decay probability of the N 1s -> pi* core-excited state in N-2
  • 2000
  • Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 33:9, s. 1819-1826
  • Tidskriftsartikel (refereegranskat)abstract
    • We report the observation of the unusually weak decay of the N 1s --> pi* core-excited N-2 molecule to the (B) over tilde (2)Sigma(u)(+) final state of N-2(+), which is only detectable in an experiment with high sensitivity. The resonant Auger spectra exh
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  • AGREN, H, et al. (författare)
  • SYMMETRY SELECTIVE RESONANT INELASTIC X-RAY-SCATTERING
  • 1995
  • Ingår i: PHYSICA B. - : ELSEVIER SCIENCE BV. - 0921-4526. ; 209:1-4, s. 105-107
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • We use two species with high point group symmetry, fullerene and benzene, to discuss important features of symmetry selective resonant inelastic X-ray scattering spectroscopy.
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  • Bjorneholm, O, et al. (författare)
  • Femtosecond dissociation of core-excited HCl monitored by frequency detuning
  • 1997
  • Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 79:17, s. 3150-3153
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Core excitation of gaseous HCl to the dissociative sigma* state leads to a deexcitation spectrum with two qualitatively different contributions-a broad molecular background and narrow atomic lines. The experiment demonstrates that the ratio of integrated
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  • Carravetta, V, et al. (författare)
  • Excitation-energy-dependent resonant photoemission: C1s-pi* spectra of carbon monoxide
  • 1997
  • Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. - 1050-2947. ; 56:6, s. 4665-4674
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • High-resolution measurements of the x-ray resonant photoemission of CO near the C1s-->pi* transition are presented. The branching ratios for the valence shell ionization close to the resonance how a strong dependence on the photon energy with a clear asym
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  • Cronstrand, P., et al. (författare)
  • Ab initio calculations of three-photon absorption
  • 2003
  • Ingår i: Chemical Physics Letters. - 0009-2614 .- 1873-4448. ; 375:1-2, s. 233-239
  • Tidskriftsartikel (refereegranskat)abstract
    • We present large scale ab initio calculations of three-photon absorption of a series of dithienothiophene based charge transfer molecules using response theory within the random phase approximation. The structure-to-property relations obtained for the three-photon absorption cross-sections are discussed and compared with those for one- and two-photon absorption. © 2003 Published by Elsevier Science B.V.
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  • Cronstrand, Peter, et al. (författare)
  • Theoretical calculations of excited state absorption
  • 2000
  • Ingår i: Physical Chemistry, Chemical Physics - PCCP. - : Royal Society of Chemistry (RSC). - 1463-9076 .- 1463-9084. ; 2:23, s. 5357-5363
  • Tidskriftsartikel (refereegranskat)abstract
    • Excitation energies and transition dipole moments between excited electronic states have been calculated using various theoretical methods to investigate the ability to describe excited state absorption. Quadratic response theory is used in combination with self-consistent field, multi-configurational self-consistent field, and coupled-cluster electronic structure methods. The results of these different methods are compared. The set of molecules considered includes lithium hydride, carbon monoxide, formaldehyde, formamide, and symtetrazine. For some of the molecules results are also compared with the method of applying linear response theory to an excited state wavefunction separately optimized by means of the multi-configurational self-consistent field method.
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  • Degl´Innocenti, A, et al. (författare)
  • Executive deficits in major depression
  • 1998
  • Ingår i: Acta Psychiatrica Scandinavica. ; 97, s. 182-188
  • Tidskriftsartikel (refereegranskat)abstract
    • Clinically depressed patients and control subjects were examined by means of different tests to assess executive function (Wisconsin Card Sorting Test, the Stroop Color Word Test, and a test of verbal fluency). The results indicate that the depressed pati
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  • Degl'Innocenti, A, et al. (författare)
  • Executive deficits in major depression
  • 1998
  • Ingår i: Acta psychiatrica Scandinavica. - : Wiley. - 0001-690X .- 1600-0447. ; 97:3, s. 182-188
  • Tidskriftsartikel (refereegranskat)
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  • Resultat 1-50 av 134

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