Nature of the Second Optical Transition in PbSe Nanocrystals

We studied the nature of this absorption feature by pump−probe spectroscopy, exactly controlling the occupation of the states involved, and present conclusive evidence that the optical transition involves neither 1Se nor 1Sh states

M. Tuan Trinh; Arjan J. Houtepen; Juleon M. Schins; Jorge Piris; Laurens D. A. Siebbeles

2008

Key concepts

Scholarcy highlights

  • The second peak in the optical absorption spectrum of PbSe nanocrystals is arguably the most discussed optical transition in semiconductor nanocrystals
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  • We studied the nature of this absorption feature by pump−probe spectroscopy, exactly controlling the occupation of the states involved, and present conclusive evidence that the optical transition involves neither 1Se nor 1Sh states
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