Polarized light emitting diode by long-range nanorod self-assembling on a water surface.
We demonstrate a straightforward strategy to fabricate a multilayer inorganic/organic polarized light-emitting diode device based on highly ordered arrays of rod-shaped nanocrystals as the active species. We have developed a simple and effective method that allows colloidal CdSe/CdS core/shell nanorods to be laterally aligned in smectic or nematic phases on the surface of water. A floating film of such ordered nanorods has been collected by a poly(dimethylsiloxane) (PDMS) stamp pad and transferred by contact printing onto previously evaporated organic layers. Thanks to the lateral nanorod alignment the as-prepared film exhibited strong polarized photoluminescence and it has been used as emissive layer in the polarized electroluminescent device.
Rizzo
Aurora
A
National Nanotechnology Laboratory of CNR-INFM, Distretto Tecnologico ISUFI, Dipartimento di Ingegneria dell'Innovazione, Universita del Salento, via Arnesano Km. 5, Lecce, Italy. aurora.rizzo@unisalento.it
Nobile
Concetta
C
Mazzeo
Marco
M
De Giorgi
Milena
M
Fiore
Angela
A
Carbone
Luigi
L
Cingolani
Roberto
R
Manna
Liberato
L
Gigli
Giuseppe
G