DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12171

Title: Strong blue excitonic emission from CdS nanocrystallites prepared by LB technique
Authors: MANDAL, P
TALWAR, SS
SRINIVASA, RS
MAJOR, SS
Keywords: langmuir-blodgett-films
cadmium-sulfide
quantum dots
semiconductor clusters
electronic-state
multilayers
photoluminescence
deposition
zno
nanoparticles
Issue Date: 2009
Publisher: SPRINGER
Citation: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 94(3), 577-584
Abstract: CdS nanocrystallites formed in ordered fatty acid LB multilayers exhibited strong surface states emission similar to 550 nm and weak excitonic emission similar to 400 nm. Treatment with aqueous CdCl(2) resulted in the suppression of surface states emission and enhancement of the blue excitonic emission. Subsequent annealing in air at 200A degrees C caused an order of magnitude enhancement of excitonic emission. The growth of nanocrystallites during annealing as seen from the red-shift of excitonic absorption and emission is suppressed by the CdCl(2) treatment. The hindered growth of nanocrystallites, the significant enhancement of excitonic emission from CdS, and the suppression of surface states emission are attributed to surface passivation of CdS nanocrystallites by surface oxide formation.
URI: http://dx.doi.org/10.1007/s00339-008-4891-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12171
http://hdl.handle.net/10054/12171
ISSN: 0947-8396
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback