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Browse Journals & Magazines > Applied Physics Letters ...> Volume:97 Issue:11 Help

Mn-doped nanocrystals in light-emitting diodes: Energy-transfer to obtain electroluminescence from quantum dots

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3 Author(s)
Rath, Arup K. ; Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India ; Bhaumik, Saikat ; Pal, Amlan J.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3489099 

We fabricate light-emitting diodes (LEDs) based on Mn-doped ZnS nanocrystals along with hole-transporting N,N′ bis(3-methylphenyl)-N,N′-diphenyl-benzidine (TPD). With Mn-doping, ZnS nanostructures exhibit a strong photoluminescence. The LEDs exhibit electroluminescence (EL) from Mn-doped ZnS quantum dots and TPD. In order to open up channels for energy-transfer from TPD to quantum dots and to achieve EL from only the nanoparticles, we grow core-shell nanoparticles with Mn-doped ZnS in the core and CdS as the shell layer. Excitons formed in TPD can now transfer their energy directly to the shell-layer to yield EL from only the nanoparticles.

Published in:
Applied Physics Letters  (Volume:97 ,  Issue: 11 )

Date of Publication: Sep 2010

Page(s):
113502 - 113502-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3489099
Product Type:
Journals & Magazines
Date of Current Version :
16 September 2010
Issue Date :
Sep 2010

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