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Journal of Nanoparticle Research

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01.06.2020 | Research paper

Photoinduced charge transfer studies of type-II core-shell ZnTe-ZnSe quantum dots

verfasst von: Simi N. J., Anju Elsa Tom, Vinayakan R., Ison V. V.

Erschienen in: Journal of Nanoparticle Research | Ausgabe 6/2020

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Abstract

In this communication, we discuss the photoinduced charge transfer between type-II ZnTe-ZnSe core-shell quantum dots and a molecular adsorbate methyl viologen. The oleic acid-capped core-shell nanostructures were synthesized using organometallic high-temperature route and were characterized using UV-visible absorption spectroscopy, photoluminescence spectroscopy, X-ray diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, inductive coupled plasma optical emission spectroscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The charge transfer behaviour of the core-shell quantum dots in the presence of methyl viologen was investigated by monitoring variations in photoluminescence and life time using steady-state and time-resolved techniques, and the results indicated static processes in the charge transfer interactions. The charge transfer capability of a core-shell system is extremely important while considering it in photovoltaic applications.

Vorheriger Artikel In situ green growth of uniform and naked Ag nanoparticles on graphene oxide at room temperature and its enhanced catalytic performance

Nächster Artikel Theoretical study of (TM)FeO3 (TM = 3d transition metals) molecular clusters

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Titel: Photoinduced charge transfer studies of type-II core-shell ZnTe-ZnSe quantum dots
verfasst von: Simi N. J.
Anju Elsa Tom
Vinayakan R.
Ison V. V.
Publikationsdatum: 01.06.2020
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 6/2020
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-020-04851-5

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