Repozytorium Uniwersytetu Jagiellońskiego

Synthesis and properties of ZnTe and ZnTe/ZnS core/shell semiconductor nanocrystals

Synthesis and properties of ZnTe and ZnTe/ZnS ...

Metadane (Dublin Core)

dc.contributor.author Lincheneau, Christophe pl
dc.contributor.author Amelia, Matteo pl
dc.contributor.author Oszajca, Marek [USOS919] pl
dc.contributor.author Boccia, Alice pl
dc.contributor.author D’Orazi, Fabio pl
dc.contributor.author Madrigale, Mattia pl
dc.contributor.author Zanoni, Robertino pl
dc.contributor.author Mazzaro, Raffaello pl
dc.contributor.author Ortolani, Luca pl
dc.contributor.author Morandi, Vittorio pl
dc.contributor.author Silvi, Serena pl
dc.contributor.author Szaciłowski, Konrad [SAP11115985] pl
dc.contributor.author Credi, Alberto pl
dc.date.accessioned 2015-07-28T09:04:14Z
dc.date.available 2015-07-28T09:04:14Z
dc.date.issued 2014 pl
dc.identifier.issn 2050-7526 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/14120
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne 3.0 Polska *
dc.rights.uri http://creativecommons.org/licenses/by-nc/3.0/pl/legalcode *
dc.title Synthesis and properties of ZnTe and ZnTe/ZnS core/shell semiconductor nanocrystals pl
dc.type JournalArticle pl
dc.description.physical 2877-2886 pl
dc.identifier.weblink https://pubs.rsc.org/en/content/articlepdf/2014/tc/c3tc32385d pl
dc.abstract.en We report the synthesis of spherical ZnTe nanocrystals and the successive coating with a ZnS shell to afford core/shell quantum dots. These nanocrystals can represent alternatives to cadmium-based quantum dots but their preparation and properties are challenging and relatively unexplored. The effect of various synthetic parameters on the reaction outcome was investigated, and the resulting nanocrystals were characterized by TEM, EDX, XPS, and spectroscopic measurements. The optical data indicate that these core/shell quantum dots belong to type I, i.e., both the electron and the hole are confined within the ZnTe core. Both the ZnTe core and ZnTe/ZnS core/shell quantum dot samples absorb in the visible region and are not luminescent. The ZnS shell preserves the optical properties of the core and improves the chemical and photochemical stability of the nanoparticles in air equilibrated solution, whereas they appear to be quite fragile in the solid state. XPS results have evidenced the distinct nature of core and core/shell QDs, confirming the formation of QDs with shells of different thicknesses and their evolution due to oxidation upon air exposure. Anodic photocurrent generation was observed when an ITO electrode functionalized with ZnTe/ZnS nanocrystals was irradiated in the visible region in a photoelectrochemical cell, indicating that the quantum dots perform spectral sensitization of the electron injection into the ITO electrode. Conversely, cathodic photocurrent generation was not observed; hence, the QD-modified electrode performs electrical rectification under a photon energy input pl
dc.description.volume 2 pl
dc.description.number 16 pl
dc.description.publication 1,1 pl
dc.identifier.doi 10.1039/c3tc32385d pl
dc.identifier.eissn 2050-7534 pl
dc.title.journal Journal of Materials Chemistry. C pl
dc.language.container eng pl
dc.date.accession 2019-02-13 pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl
dc.rights.original CC-BY-NC; inne; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / P pl
dc.pbn.affiliation USOS919:UJ.WCh; pl


Pliki tej pozycji

Pozycja umieszczona jest w następujących kolekcjach

Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne 3.0 Polska Poza zaznaczonymi wyjątkami, licencja tej pozycji opisana jest jako Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne 3.0 Polska