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Electron injection effect in InO and SnO nanocrystals modified by ruthenium heteroleptic complexes

In this work, the optical characteristics and conductivity under photoactivation with visible light of hybrids based on nanocrystalline SnO 2 or In 2 O 3 semiconductor matrixes and heteroleptic Ru( ii ) complexes were studied. The heteroleptic Ru( ii ) complexes were prepared based on 1 H -imidazo[4...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2020-04, Vol.22 (15), p.8146-8156
Main Authors: Tokarev, Sergey, Rumyantseva, Marina, Nasriddinov, Abulkosim, Gaskov, Alexander, Moiseeva, Anna, Fedorov, Yuri, Fedorova, Olga, Jonusauskas, Gediminas
Format: Article
Language:English
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Summary:In this work, the optical characteristics and conductivity under photoactivation with visible light of hybrids based on nanocrystalline SnO 2 or In 2 O 3 semiconductor matrixes and heteroleptic Ru( ii ) complexes were studied. The heteroleptic Ru( ii ) complexes were prepared based on 1 H -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 SnO 2 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 In 2 O 3 , 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. In this work, the optical characteristics and conductivity under photoactivation with visible light of hybrids based on nanocrystalline SnO 2 or In 2 O 3 semiconductor matrixes and heteroleptic Ru( ii ) complexes were studied.
ISSN:1463-9076
1463-9084
DOI:10.1039/c9cp07016h