Abstract
Extensively studied Mn-doped semiconductor nanocrystals have invariably exhibited photoluminescence over a narrow energy window of width in the orange-red region and a surprisingly large spectral width (), 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 () covering the deep green—deep red region and (ii) exhibit widths substantially lower () than reported so far, opening newer application possibilities and requiring a fundamental shift in our perception of the emission from Mn-doped semiconductor nanocrystals.
- Received 2 August 2012
DOI:https://doi.org/10.1103/PhysRevLett.110.267401
© 2013 American Physical Society
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