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.
A97.pdf - Published Version
Restricted to Registered users only
Download (203Kb) | Request a copy
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|
|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|
Actions (login required)