Interplay of Internal Structure and Interfaces on the Emitting Properties of Hybrid ZnO Hierarchical Particles

Journal article
(Original article)


Publication Details

Author(s): Distaso M, Bertoni G, Todisco S, Marras S, Gallo V, Manna L, Peukert W
Journal: ACS Applied Materials and Interfaces
Publisher: American Chemical Society
Publication year: 2017
Volume: 9
Journal issue: 17
Pages range: 15182-15191
ISSN: 1944-8244
eISSN: 1944-8252


Abstract

The design of hybrid organic/inorganic nanostructures with controlled assembly drives the development of materials with new or improved properties and superior performances. In this paper, the surface and internal structure of hybrid ZnO poly-N-vinylpyrrolidone (ZnO/PVP) mesocrystals are investigated in detail and correlated with their emitting properties. A photoluminescence study at room temperature reveals that the as-synthesized particles show a remarkable ultraviolet (UV) emission, whereas an emission from defects in the visible region is not observed. On the other hand, a visible emission is achieved upon calcination of the hybrid ZnO/PVP particles in air, and its intensity is found to increase with the calcination temperature and, in some cases, to overwhelm the UV emission. A molecular description is proposed for the absence of a visible emission from defects in the as-synthesized ZnO/PVP mesocrystals on the basis of Fourier transform infrared (FTIR) and solid-state (13)C NMR (SSNMR) spectroscopy. An in-depth electron microscopy study sheds light on the internal organization of mesocrystals and reveals the formation of nanoreactors, that is, particles with enclosed porosity, upon thermal treatment.


FAU Authors / FAU Editors

Distaso, Monica Dr.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions
Istituto dei Materiali per l'Elettronica ed il Magnetismo IMEM
Italian Institute of Technology / Istituto Italiano di Tecnologia (IIT)
Politecnico di Bari


How to cite

APA:
Distaso, M., Bertoni, G., Todisco, S., Marras, S., Gallo, V., Manna, L., & Peukert, W. (2017). Interplay of Internal Structure and Interfaces on the Emitting Properties of Hybrid ZnO Hierarchical Particles. ACS Applied Materials and Interfaces, 9(17), 15182-15191. https://dx.doi.org/10.1021/acsami.7b00777

MLA:
Distaso, Monica, et al. "Interplay of Internal Structure and Interfaces on the Emitting Properties of Hybrid ZnO Hierarchical Particles." ACS Applied Materials and Interfaces 9.17 (2017): 15182-15191.

BibTeX: 

Last updated on 2019-15-05 at 10:34