Sorry, you need to enable JavaScript to visit this website.

Photoluminescence quenching and conductivity enhancement of PVK induced by CdS quantum dots

TitlePhotoluminescence quenching and conductivity enhancement of PVK induced by CdS quantum dots
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2012
AuthorsMasala, S., Bizzarro V., Re Marilena, Nenna G., Villani Fulvia, Minarini Carla, and Di Luccio Tiziana
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume44
Pagination1272-1277
ISSN13869477
KeywordsAtomic force microscopy, Cadmium compounds, Cadmium sulfide, CdS, CdS quantum dots, Conductivity enhancement, Decomposition, High boiling solvents, Hybrid nanocomposites, Morphological properties, Nano-composite layers, Nanocomposites, Octadecene, Optical characterization, Photoluminescence, Photoluminescence quenching, Photoluminescence spectroscopy, Poly(N-vinylcarbazole), Quenching, Semiconductor quantum dots, Single-source precursor, Transmission electron microscopy, Transport properties, UV-vis absorptions
Abstract

In this work we studied the optical and transport properties of hybrid nanocomposites of CdS quantum dots (QDs) and poly(N-vinylcarbazole) (PVK) polymer. The CdS QDs were prepared by thermal decomposition (thermolysis) of a single source precursor, Cd bis-thiolate, in a high boiling solvent, octadecene (ODE). The optical characterization of the QDs has been carried out by UV-vis absorption and photoluminescence spectroscopy while the morphological properties have been investigated atomic force microscopy and transmission electron microscopy. The analyses have shown that CdS QDs of diameter below 6 nm can be synthesized by such route with good light emission in the UV range. The QDs have been dispersed in a poly(N-vinylcarbazole) (PVK) matrix to obtain a PVK:CdS nanocomposite layers. An increase of conductivity and a quenching of the photoluminescence have been observed when the nanocomposite layer was inserted in ITO/PVK:CdS/Al structures. © 2012 Elsevier B.V.

Notes

cited By 5

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84861725760&doi=10.1016%2fj.physe.2012.01.026&partnerID=40&md5=144ec99c3a5d91e608b0c4034ddee9b9
DOI10.1016/j.physe.2012.01.026
Citation KeyMasala20121272