ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Enhanced electroluminescence properties of doped ZnS nanorods formed by the self-assembly of colloidal nanocrystals

Manzoor, K and Aditya, V and Vadera, SR and Kumar, N and Kutty, TRN (2005) Enhanced electroluminescence properties of doped ZnS nanorods formed by the self-assembly of colloidal nanocrystals. In: Solid State Communications, 135 (1-2). pp. 16-20.

[img] PDF
A97.pdf - Published Version
Restricted to Registered users only

Download (208kB) | Request a copy
Official URL: http://dx.doi.org/10.1016/j.ssc.2005.04.001


Aggregation based meso-scale self-assembly of doped semiconductor nanocrystals leading to the formation of monocrystalline nanorodsshowing enhanced photo- and electro-luminescence properties isreported. similar to 4 nm sized, polycrystalline ZnS nanoparticles ofzinc-blende (cubic) structure, doped with Cu+-Al3+ have been aggregatedin the aqueous solution and grown into nanorods of length similar to400 nm and aspect ratio similar to 12. Transmission electronmicroscopic (TEM) images indicate crystal growth mechanisms involvingparticle-to-particle oriented-attachment assisted by sulphur-sulphurcatenation leading to covalent-linkage. The nanorods exhibitself-assembly dependant luminescence properties such as quenching ofthe lattice defect-related emissions accompanied by the enhancement inthe dopant-related emission, efficient low-voltage electroluminescence(EL) and super-linear voltage-brightness EL characteristics. This studydemonstrates the technological importance of aggregation basedself-assembly in doped semiconductor nanosystems.

Item Type: Journal Article
Publication: Solid State Communications
Publisher: Elsevier Science
Additional Information: Copyright for this article belongs to Elsevier Science.
Keywords: A. Nanostructures;A. Semiconductors;E. Luminescence
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 28 Jul 2005
Last Modified: 01 Mar 2012 09:51
URI: http://eprints.iisc.ac.in/id/eprint/3464

Actions (login required)

View Item View Item