Issue 15, 2020

Electron injection effect in In2O3 and SnO2 nanocrystals modified by ruthenium heteroleptic complexes

Abstract

In this work, the optical characteristics and conductivity under photoactivation with visible light of hybrids based on nanocrystalline SnO2 or In2O3 semiconductor matrixes and heteroleptic Ru(II) complexes were studied. The heteroleptic Ru(II) complexes were prepared based on 1H-imidazo[4,5-f][1,10]phenanthroline and 2,2′-bipyridine ligands. Nanocrystalline semiconductor oxides were obtained by chemical precipitation with subsequent thermal annealing and characterized by XRD, SEM and single-point BET methods. The heteroleptic Ru(II) complexes as well as hybrid materials were characterized by time-resolved luminescence and X-ray photoelectron spectroscopy. The results showed that the surface modification of SnO2 nanoparticles with heteroleptic ruthenium complexes led to an increase in conductivity upon irradiation with light appropriate for absorption by organometallic complexes. In the case of In2O3, the deposition of Ru(II) complexes resulted in a decrease in conductivity, apparently due to the special structure of the surface layer of the semiconductor.

Graphical abstract: Electron injection effect in In2O3 and SnO2 nanocrystals modified by ruthenium heteroleptic complexes

Supplementary files

Article information

Article type
Paper
Submitted
30 Dec 2019
Accepted
13 Mar 2020
First published
16 Mar 2020

Phys. Chem. Chem. Phys., 2020,22, 8146-8156

Electron injection effect in In2O3 and SnO2 nanocrystals modified by ruthenium heteroleptic complexes

S. Tokarev, M. Rumyantseva, A. Nasriddinov, A. Gaskov, A. Moiseeva, Y. Fedorov, O. Fedorova and G. Jonusauskas, Phys. Chem. Chem. Phys., 2020, 22, 8146 DOI: 10.1039/C9CP07016H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements