Journal
PHYSICAL REVIEW LETTERS
Volume 99, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.99.265501
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The fluorescence of Mn(2+) doped in the shell of CdS/ZnS core/shell nanocrystals at radially controlled position is used as a local probe of pressure in the nanocrystal shell. The redshift of the fluorescence with increasing shell thickness indicates a pressure of more than 4 GPa for 7.5 monolayers of ZnS. The radial dependence and magnitude of the pressure derived from the Mn(2+) fluorescence shift are in good agreement with the spherically symmetric elastic continuum model and the 7% misfit between the core and the epitaxial shell.
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