|Title||Synthesis and photoluminescence properties of hybrid 1D core–shell structured nanocomposites based on ZnO/polydopamine|
Fedorenko, Viktoriia Oleksandrivna
Viter, Roman Vitaliiovych
zinc oxide and polydopamine (ZnO/ PDA)
X-ray diffraction (XRD)
|Date of Issue||2020|
|Publisher||Royal Society of Chemistry|
|License||Creative Commons Attribution - NonCommercial 4.0 International|
|Citation||Synthesis and photoluminescence properties of hybrid 1D core–shell structured nanocomposites based on ZnO/polydopamine V. Fedorenko, R. Viter, R. Mrówczyński, D. Damberga, E. Coy and I. Iatsunskyi, RSC Adv., 2020, 10, 29751 DOI: 10.1039/D0RA04829A|
In the present work, we report on the modelling of processes at the zinc oxide and polydopamine (ZnO/
PDA) interface. The PDA layer was deposited onto ZnO nanorods (NRs) via chemical bath deposition.
The defect concentrations in ZnO before and after PDA deposition were calculated and analysed. The
ZnONRs/PDA core–shell nanostructures were studied by transmission electron microscopy (TEM), X-ray
diffraction (XRD), Raman and Fourier-transform infrared (FTIR) spectroscopy, photoluminescence (PL)
measurements, and diffuse reflectance spectroscopy. The TEM and electron energy loss spectroscopy
(EELS) measurements confirmed the conformal coating of PDA, while the PL emission from ZnO and
ZnONRs/PDA samples showed a reduction of intensity after the PDA deposition. The decrease of defect
concentration participating in PL and quantum efficiency explains the PL reduction. Finally, the observed
decrease of activation energies and a shift of the PL peaks are attributed to the formation of an
additional local electrical field between the PDA and ZnO nanostructures.
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