Beaulac, Remi and Archer, Paul I. and Liu, Xinyu and Lee, Sanghoon and Salley, G. Mackay and Dobrowolska, Margaret and Furdyna, Jacek K. and Gamelin, Daniel R. (2008) Spin-polarizable excitonic luminescence in colloidal Mn2+-doped CdSe quantum dots. NANO LETTERS, 8 (4). pp. 1197-1201.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl080195p
The photoluminescence of colloidal Mn2+-doped CdSe nanocrystals has been studied as a function of nanocrystal diameter. These nanocrystals are shown to be unique among colloidal doped semiconductor nanocrystals reported to date in that quantum confinement allows tuning of the CdSe bandgap energy across the Mn2+ excited-state energies. At small diameters, the nanocrystal photoluminescence is dominated by Mn2+ emission. At large diameters, CdSe excitonic photoluminescence dominates. The latter scenario has allowed spin-polarized excitonic photoluminescence to be observed in colloidal doped semiconductor nanocrystals for the first time.
|Uncontrolled Keywords:||DILUTED MAGNETIC SEMICONDUCTORS; NANOCRYSTALS; SPECTROSCOPY|
|Subjects:||Analytical Science > Microscopy and probe methods|
Physical Science > Nanoelectronics
|Deposited On:||16 Sep 2009 11:05|
|Last Modified:||16 Sep 2009 11:05|
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