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Thiol-capped CdTe quantum dots hosted in saponites

Lookup NU author(s): Dr Fabio Cucinotta

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Abstract

Composite materials were easily prepared based on saponites where thiol-capped CdTe quantum dots (QDs) were hosted. A saponite was exchanged with a cationic polyelectrolyte solution of poly(diallyldimethylammonium chloride) (PDDA) and the thiol-capped QDs. Two composites based on delaminated saponites, a cationic polyelectrolyte and CdTe QDs were also prepared by spin-coating on a glass support. The presence of the QDs hosted in the inorganic matrices was tested by FT-IR and optical luminescence measurements. Additionally, a light-emitting diode was assembled and its I-V electrical characteristics are presented. Transition from ohmic behaviour to space charge limited conduction appeared at a turn-on voltage of 5.2 V.

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Author(s): Pérez-Barrado E, Marsal LF, Aguiló M, Cesteros Y, Díaz F, Pallarès J, Cucinotta F, Marchese L, Pujol MC, Salagre P

Publication type: Article

Publication status: Published

Journal: RSC Advances

Year: 2016

Volume: 6

Issue: 106

Pages: 104793-104798

Online publication date: 26/10/2016

Acceptance date: 26/10/2016

ISSN (print): 2046-2069

Publisher: Royal Society of Chemistry

URL: http://dx.doi.org/10.1039/c6ra21225e

DOI: 10.1039/c6ra21225e

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