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Ultranarrow and Widely Tunable Mn2+-Induced Photoluminescence from Single Mn-Doped Nanocrystals of ZnS-CdS Alloys

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Title Ultranarrow and Widely Tunable Mn2+-Induced Photoluminescence from Single Mn-Doped Nanocrystals of ZnS-CdS Alloys
 
Creator HAZARIKA, A
LAYEK, A
DE, S
NAG, A
DEBNATH, S
MAHADEVAN, P
CHOWDHURY, A
SARMA, DD
 
Subject ZERO-PHONON LINES
SEMICONDUCTOR NANOCRYSTALS
QUANTUM DOTS
LIGHT
EFFICIENT
EMISSION
 
Description Extensively studied Mn-doped semiconductor nanocrystals have invariably exhibited photoluminescence over a narrow energy window of width = 180 meV), contrary to its presumed atomic-like origin. Carrying out emission measurements on individual single nanocrystals and supported by ab initio calculations, we show that Mn PL emission, in fact, can (i) vary over a much wider range (similar to 370 meV) covering the deep green-deep red region and (ii) exhibit widths substantially lower (similar to 60-75 meV) than reported so far, opening newer application possibilities and requiring a fundamental shift in our perception of the emission from Mn-doped semiconductor nanocrystals.
 
Publisher AMER PHYSICAL SOC
 
Date 2014-10-16T13:00:43Z
2014-10-16T13:00:43Z
2013
 
Type Article
 
Identifier PHYSICAL REVIEW LETTERS, 110(26)
http://dx.doi.org/10.1103/PhysRevLett.110.267401
http://dspace.library.iitb.ac.in/jspui/handle/100/15611
 
Language en