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- Zhao, Y., et al.
(författare)
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Bismuth nanoplatelets : universal synthetic strategy and emerging application for PEC-type photodetectors
- 2023
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Ingår i: MATERIALS TODAY NANO. - : Elsevier BV. - 2588-8420. ; 23
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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)
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Theory of Auger spectra for molecular-field-split core levels
- 1996
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Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. ; 53:3, s. 1379-1387
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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)
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Raman versus non-Raman behavior in resonant auger spectra of HCl
- 1996
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Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. ; 76:17, s. 3100-3103
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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)
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Hydrogen-bond induced surface core-level shift in isonicotinic acid
- 2001
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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)
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Bond-distance-dependent decay probability of the N 1s -> pi* core-excited state in N-2
- 2000
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 33:9, s. 1819-1826
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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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