Jäger, Marc ; Schäfer, Rolf (2021)
From Cd‐rich to Se‐rich – the manipulation of CdSe nanocluster structure and optical absorption.
In: ChemPhysChem, 22 (2)
doi: 10.1002/cphc.202000894
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
A combined experimental and quantum‐chemical study of the structure and optoelectronic properties of isolated non‐stoichiometric CdₓSey⁺ clusters with x=3, 4 and y=3, 4 is presented. The consistency of optical response calculations with the measured absorption spectra reveals that the theoretically predicted lowest energy structural isomers have been formed in the molecular beam experiments. The Se‐rich nanocluster Cd₃Se₄⁺ contains a Se₂⁻ unit which is responsible for the enhanced light absorption in the visible spectral range. In contrast, the radical electron of the Cd‐rich species Cd₄Se₃⁺ is localized at a Cd⁺ centre which is attached to a six‐membered Cd₃Se₃ ring. The excess Cd atom is partly responsible for an intense optical absorption in the near ultraviolet. The variation of the geometry and the optical behaviour in dependence of the stoichiometry is discussed with respect to the photocatalytic properties of CdSe nanoparticles
| Typ des Eintrags: | Artikel | ||||
|---|---|---|---|---|---|
| Erschienen: | 2021 | ||||
| Autor(en): | Jäger, Marc ; Schäfer, Rolf | ||||
| Art des Eintrags: | Bibliographie | ||||
| Titel: | From Cd‐rich to Se‐rich – the manipulation of CdSe nanocluster structure and optical absorption | ||||
| Sprache: | Englisch | ||||
| Publikationsjahr: | 2021 | ||||
| Ort: | Weinheim | ||||
| Verlag: | Wiley-VCH | ||||
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ChemPhysChem | ||||
| Jahrgang/Volume einer Zeitschrift: | 22 | ||||
| (Heft-)Nummer: | 2 | ||||
| DOI: | 10.1002/cphc.202000894 | ||||
| Zugehörige Links: | |||||
| Kurzbeschreibung (Abstract): | A combined experimental and quantum‐chemical study of the structure and optoelectronic properties of isolated non‐stoichiometric CdₓSey⁺ clusters with x=3, 4 and y=3, 4 is presented. The consistency of optical response calculations with the measured absorption spectra reveals that the theoretically predicted lowest energy structural isomers have been formed in the molecular beam experiments. The Se‐rich nanocluster Cd₃Se₄⁺ contains a Se₂⁻ unit which is responsible for the enhanced light absorption in the visible spectral range. In contrast, the radical electron of the Cd‐rich species Cd₄Se₃⁺ is localized at a Cd⁺ centre which is attached to a six‐membered Cd₃Se₃ ring. The excess Cd atom is partly responsible for an intense optical absorption in the near ultraviolet. The variation of the geometry and the optical behaviour in dependence of the stoichiometry is discussed with respect to the photocatalytic properties of CdSe nanoparticles |
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| Alternatives oder übersetztes Abstract: |
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| Freie Schlagworte: | CdSe, semiconductor, cluster, optical absorption, atomically-precise nanoclusters | ||||
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
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| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
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| Hinterlegungsdatum: | 31 Jan 2024 07:38 | ||||
| Letzte Änderung: | 31 Jan 2024 07:38 | ||||
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| Suche nach Titel in: | TUfind oder in Google | ||||
Verfügbare Versionen dieses Eintrags
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From Cd‐Rich to Se‐Rich – The Manipulation of CdSe Nanocluster Structure and Optical Absorption. (deposited 30 Jan 2024 13:45)
- From Cd‐rich to Se‐rich – the manipulation of CdSe nanocluster structure and optical absorption. (deposited 31 Jan 2024 07:38) [Gegenwärtig angezeigt]
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