Peterson, Jeffrey J. and Huang, Libai and Delerue, Christophe and Allan, Guy and Krauss, Todd D. (2007) Uncovering forbidden optical transitions in PbSe nanocrystals. NANO LETTERS, 7 (12). pp. 3827-3831.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl072487g
The 1S(h,e)-1P(e,h) exciton transition energy of PbSe nanocrystals was determined via two-photon photoluminescence excitation spectroscopy and was found to be in good agreement with predictions from a tight-binding calculation. The two-photon excitation peak occurs at energies very close to a strong feature in the one-photon absorption spectrum and suggests that it should be assigned as a formally forbidden S-P transition. Leading explanations for the unusual strength of the forbidden transition are discussed.
|Subjects:||Physical Science > Photonics|
|Deposited By:||Farnush Anwar|
|Deposited On:||23 Dec 2008 10:33|
|Last Modified:||23 Dec 2008 10:33|
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